SUSE update for the Linux Kernel

1) Use-after-free

EUVDB-ID: #VU47103

Risk: Low

CVSSv4.0: 5.9 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2020-0433

CWE-ID: CWE-416 - Use After Free

Exploit availability: No

Description

The vulnerability allows a local authenticated user to execute arbitrary code.

In blk_mq_queue_tag_busy_iter of blk-mq-tag.c, there is a possible use after free due to improper locking. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android kernelAndroid ID: A-151939299

Mitigation

Update the affected package the Linux Kernel to the latest version.

Vulnerable software versions

SUSE Linux Enterprise Server: 12-SP5

kernel-source-azure: before 4.12.14-16.50.1

kernel-devel-azure: before 4.12.14-16.50.1

kernel-syms-azure: before 4.12.14-16.50.1

kernel-azure-devel: before 4.12.14-16.50.1

kernel-azure-debugsource: before 4.12.14-16.50.1

kernel-azure-debuginfo: before 4.12.14-16.50.1

kernel-azure-base-debuginfo: before 4.12.14-16.50.1

kernel-azure-base: before 4.12.14-16.50.1

kernel-azure: before 4.12.14-16.50.1

CPE2.3

External links

https://www.suse.com/support/update/announcement/2021/suse-su-20211175-1/

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

2) Observable discrepancy

EUVDB-ID: #VU51774

Risk: Low

CVSSv4.0: 4.3 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2020-27170

CWE-ID: CWE-203 - Observable discrepancy

Exploit availability: No

Description

The vulnerability allows a local user to gain access to sensitive information.

The vulnerability exists in kernel/bpf/verifier.c due to kernel performs undesirable out-of-bounds speculation on pointer arithmetic, leading to side-channel attacks that defeat Spectre mitigations. A local user can run a specially crafted program to gain access to sensitive information.

Mitigation

Update the affected package the Linux Kernel to the latest version.

Vulnerable software versions

SUSE Linux Enterprise Server: 12-SP5

kernel-source-azure: before 4.12.14-16.50.1

kernel-devel-azure: before 4.12.14-16.50.1

kernel-syms-azure: before 4.12.14-16.50.1

kernel-azure-devel: before 4.12.14-16.50.1

kernel-azure-debugsource: before 4.12.14-16.50.1

kernel-azure-debuginfo: before 4.12.14-16.50.1

kernel-azure-base-debuginfo: before 4.12.14-16.50.1

kernel-azure-base: before 4.12.14-16.50.1

kernel-azure: before 4.12.14-16.50.1

CPE2.3

External links

https://www.suse.com/support/update/announcement/2021/suse-su-20211175-1/

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

3) Off-by-one

EUVDB-ID: #VU51775

Risk: Low

CVSSv4.0: 4.3 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2020-27171

CWE-ID: CWE-193 - Off-by-one Error

Exploit availability: No

Description

The vulnerability allows a local user to gain access to sensitive information.

The vulnerability exists due to an off-by-one error in kernel/bpf/verifier.c affecting out-of-bounds speculation on pointer arithmetic, leading to side-channel attacks that defeat Spectre mitigations. A local user can run a specially crafted program to gain access to sensitive information on the system.

Mitigation

Update the affected package the Linux Kernel to the latest version.

Vulnerable software versions

SUSE Linux Enterprise Server: 12-SP5

kernel-source-azure: before 4.12.14-16.50.1

kernel-devel-azure: before 4.12.14-16.50.1

kernel-syms-azure: before 4.12.14-16.50.1

kernel-azure-devel: before 4.12.14-16.50.1

kernel-azure-debugsource: before 4.12.14-16.50.1

kernel-azure-debuginfo: before 4.12.14-16.50.1

kernel-azure-base-debuginfo: before 4.12.14-16.50.1

kernel-azure-base: before 4.12.14-16.50.1

kernel-azure: before 4.12.14-16.50.1

CPE2.3

External links

https://www.suse.com/support/update/announcement/2021/suse-su-20211175-1/

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

4) Out-of-bounds read

EUVDB-ID: #VU49169

Risk: Low

CVSSv4.0: 1.1 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2020-27815

CWE-ID: CWE-125 - Out-of-bounds read

Exploit availability: No

Description

The vulnerability allows a local user to perform a denial of service (DoS) attack.

The vulnerability exists due to a boundary condition in fs/jfs/jfs_dmap.c. A local user can trigger out-of-bounds read error and crash the kernel.

Mitigation

Update the affected package the Linux Kernel to the latest version.

Vulnerable software versions

SUSE Linux Enterprise Server: 12-SP5

kernel-source-azure: before 4.12.14-16.50.1

kernel-devel-azure: before 4.12.14-16.50.1

kernel-syms-azure: before 4.12.14-16.50.1

kernel-azure-devel: before 4.12.14-16.50.1

kernel-azure-debugsource: before 4.12.14-16.50.1

kernel-azure-debuginfo: before 4.12.14-16.50.1

kernel-azure-base-debuginfo: before 4.12.14-16.50.1

kernel-azure-base: before 4.12.14-16.50.1

kernel-azure: before 4.12.14-16.50.1

CPE2.3

External links

https://www.suse.com/support/update/announcement/2021/suse-su-20211175-1/

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

5) Out-of-bounds write

EUVDB-ID: #VU51549

Risk: Low

CVSSv4.0: 5.9 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2020-29368

CWE-ID: CWE-787 - Out-of-bounds write

Exploit availability: No

Description

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to a boundary error when processing untrusted input within the __split_huge_pmd() function in mm/huge_memory.c in the Linux kernel. A local user can abuse the copy-on-write implementation and gain unintended write access because of a race condition in a THP mapcount check.

Mitigation

Update the affected package the Linux Kernel to the latest version.

Vulnerable software versions

SUSE Linux Enterprise Server: 12-SP5

kernel-source-azure: before 4.12.14-16.50.1

kernel-devel-azure: before 4.12.14-16.50.1

kernel-syms-azure: before 4.12.14-16.50.1

kernel-azure-devel: before 4.12.14-16.50.1

kernel-azure-debugsource: before 4.12.14-16.50.1

kernel-azure-debuginfo: before 4.12.14-16.50.1

kernel-azure-base-debuginfo: before 4.12.14-16.50.1

kernel-azure-base: before 4.12.14-16.50.1

kernel-azure: before 4.12.14-16.50.1

CPE2.3

External links

https://www.suse.com/support/update/announcement/2021/suse-su-20211175-1/

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

6) Race condition

EUVDB-ID: #VU63812

Risk: Low

CVSSv4.0: 0.4 [CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2020-29374

CWE-ID: CWE-362 - Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

Exploit availability: No

Description

The vulnerability allows a local user to gain access to sensitive information.

The vulnerability exists due to a race condition in the mm/gup.c and mm/huge_memory.c in Linux kernel. A local user can exploit the race and gain unauthorized access to sensitive information.

Mitigation

Update the affected package the Linux Kernel to the latest version.

Vulnerable software versions

SUSE Linux Enterprise Server: 12-SP5

kernel-source-azure: before 4.12.14-16.50.1

kernel-devel-azure: before 4.12.14-16.50.1

kernel-syms-azure: before 4.12.14-16.50.1

kernel-azure-devel: before 4.12.14-16.50.1

kernel-azure-debugsource: before 4.12.14-16.50.1

kernel-azure-debuginfo: before 4.12.14-16.50.1

kernel-azure-base-debuginfo: before 4.12.14-16.50.1

kernel-azure-base: before 4.12.14-16.50.1

kernel-azure: before 4.12.14-16.50.1

CPE2.3

External links

https://www.suse.com/support/update/announcement/2021/suse-su-20211175-1/

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

7) Out-of-bounds read

EUVDB-ID: #VU51552

Risk: Low

CVSSv4.0: 4.3 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2020-35519

CWE-ID: CWE-125 - Out-of-bounds read

Exploit availability: No

Description

The vulnerability allows a local user to gain access to potentially sensitive information.

The vulnerability exists due to a boundary condition within the x25_bind() function in net/x25/af_x25.c in the Linux kernel. A local user can run a specially crafted program to read contents of memory on the system.

Mitigation

Update the affected package the Linux Kernel to the latest version.

Vulnerable software versions

SUSE Linux Enterprise Server: 12-SP5

kernel-source-azure: before 4.12.14-16.50.1

kernel-devel-azure: before 4.12.14-16.50.1

kernel-syms-azure: before 4.12.14-16.50.1

kernel-azure-devel: before 4.12.14-16.50.1

kernel-azure-debugsource: before 4.12.14-16.50.1

kernel-azure-debuginfo: before 4.12.14-16.50.1

kernel-azure-base-debuginfo: before 4.12.14-16.50.1

kernel-azure-base: before 4.12.14-16.50.1

kernel-azure: before 4.12.14-16.50.1

CPE2.3

External links

https://www.suse.com/support/update/announcement/2021/suse-su-20211175-1/

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

8) Resource management error

EUVDB-ID: #VU51587

Risk: Medium

CVSSv4.0: 4.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2021-26930

CWE-ID: CWE-399 - Resource Management Errors

Exploit availability: No

Description

The vulnerability allows a local user to perform a denial of service (DoS) attack.

The vulnerability exists due to improper management of internal resources when processing service requests to the PV backend within drivers/block/xen-blkback/blkback.c driver in Xen. A local user on the guest OS can perform a denial of service (DoS) attack.

Mitigation

Update the affected package the Linux Kernel to the latest version.

Vulnerable software versions

SUSE Linux Enterprise Server: 12-SP5

kernel-source-azure: before 4.12.14-16.50.1

kernel-devel-azure: before 4.12.14-16.50.1

kernel-syms-azure: before 4.12.14-16.50.1

kernel-azure-devel: before 4.12.14-16.50.1

kernel-azure-debugsource: before 4.12.14-16.50.1

kernel-azure-debuginfo: before 4.12.14-16.50.1

kernel-azure-base-debuginfo: before 4.12.14-16.50.1

kernel-azure-base: before 4.12.14-16.50.1

kernel-azure: before 4.12.14-16.50.1

CPE2.3

External links

https://www.suse.com/support/update/announcement/2021/suse-su-20211175-1/

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated privileged user via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

9) Allocation of resources without limits or throttling

EUVDB-ID: #VU92418

Risk: Low

CVSSv4.0: 4.3 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2021-26931

CWE-ID: CWE-770 - Allocation of Resources Without Limits or Throttling

Exploit availability: No

Description

The vulnerability allows a local user to perform a denial of service (DoS) attack.

The vulnerability exists due to allocation of resources without limits or throttling error within the scsiback_gnttab_data_map_batch() function in drivers/xen/xen-scsiback.c. A local user can perform a denial of service (DoS) attack.

Mitigation

Update the affected package the Linux Kernel to the latest version.

Vulnerable software versions

SUSE Linux Enterprise Server: 12-SP5

kernel-source-azure: before 4.12.14-16.50.1

kernel-devel-azure: before 4.12.14-16.50.1

kernel-syms-azure: before 4.12.14-16.50.1

kernel-azure-devel: before 4.12.14-16.50.1

kernel-azure-debugsource: before 4.12.14-16.50.1

kernel-azure-debuginfo: before 4.12.14-16.50.1

kernel-azure-base-debuginfo: before 4.12.14-16.50.1

kernel-azure-base: before 4.12.14-16.50.1

kernel-azure: before 4.12.14-16.50.1

CPE2.3

External links

https://www.suse.com/support/update/announcement/2021/suse-su-20211175-1/

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

10) Buffer overflow

EUVDB-ID: #VU93670

Risk: Low

CVSSv4.0: 4.3 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2021-26932

CWE-ID: CWE-119 - Memory corruption

Exploit availability: No

Description

The vulnerability allows a local user to perform a denial of service (DoS) attack.

The vulnerability exists due to memory corruption within the gntdev_map_grant_pages() function in drivers/xen/gntdev.c. A local user can perform a denial of service (DoS) attack.

Mitigation

Update the affected package the Linux Kernel to the latest version.

Vulnerable software versions

SUSE Linux Enterprise Server: 12-SP5

kernel-source-azure: before 4.12.14-16.50.1

kernel-devel-azure: before 4.12.14-16.50.1

kernel-syms-azure: before 4.12.14-16.50.1

kernel-azure-devel: before 4.12.14-16.50.1

kernel-azure-debugsource: before 4.12.14-16.50.1

kernel-azure-debuginfo: before 4.12.14-16.50.1

kernel-azure-base-debuginfo: before 4.12.14-16.50.1

kernel-azure-base: before 4.12.14-16.50.1

kernel-azure: before 4.12.14-16.50.1

CPE2.3

External links

https://www.suse.com/support/update/announcement/2021/suse-su-20211175-1/

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

11) Information disclosure

EUVDB-ID: #VU51453

Risk: Low

CVSSv4.0: 4.3 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2021-27363

CWE-ID: CWE-200 - Information exposure

Exploit availability: No

Description

The vulnerability allows a local user to gain access to potentially sensitive information.

The vulnerability exists due to the show_transport_handle() shows iSCSI transport handle to non-root users. A local user can gain unauthorized access to sensitive information and use it along with another vulnerability, such as #VU51452, to escalate privileges on the system.

Mitigation

Update the affected package the Linux Kernel to the latest version.

Vulnerable software versions

SUSE Linux Enterprise Server: 12-SP5

kernel-source-azure: before 4.12.14-16.50.1

kernel-devel-azure: before 4.12.14-16.50.1

kernel-syms-azure: before 4.12.14-16.50.1

kernel-azure-devel: before 4.12.14-16.50.1

kernel-azure-debugsource: before 4.12.14-16.50.1

kernel-azure-debuginfo: before 4.12.14-16.50.1

kernel-azure-base-debuginfo: before 4.12.14-16.50.1

kernel-azure-base: before 4.12.14-16.50.1

kernel-azure: before 4.12.14-16.50.1

CPE2.3

External links

https://www.suse.com/support/update/announcement/2021/suse-su-20211175-1/

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

12) Permissions, Privileges, and Access Controls

EUVDB-ID: #VU51452

Risk: Low

CVSSv4.0: 5.9 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2021-27364

CWE-ID: CWE-264 - Permissions, Privileges, and Access Controls

Exploit availability: No

Description

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to iscsi_if_recv_msg() allows non-root users to connect and send commands to the Linux kernel. A local user can escalate privileges on the system.

Mitigation

Update the affected package the Linux Kernel to the latest version.

Vulnerable software versions

SUSE Linux Enterprise Server: 12-SP5

kernel-source-azure: before 4.12.14-16.50.1

kernel-devel-azure: before 4.12.14-16.50.1

kernel-syms-azure: before 4.12.14-16.50.1

kernel-azure-devel: before 4.12.14-16.50.1

kernel-azure-debugsource: before 4.12.14-16.50.1

kernel-azure-debuginfo: before 4.12.14-16.50.1

kernel-azure-base-debuginfo: before 4.12.14-16.50.1

kernel-azure-base: before 4.12.14-16.50.1

kernel-azure: before 4.12.14-16.50.1

CPE2.3

External links

https://www.suse.com/support/update/announcement/2021/suse-su-20211175-1/

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

13) Buffer overflow

EUVDB-ID: #VU51451

Risk: Low

CVSSv4.0: 5.9 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2021-27365

CWE-ID: CWE-119 - Memory corruption

Exploit availability: No

Description

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to a boundary error when processing Netlink messages in Linux kernel through 5.11.3, as certain iSCSI data structures do not have appropriate length constraints or checks, and can exceed the PAGE_SIZE value. A local unprivileged user can send a Netlink message that is associated with iSCSI, and has a length up to the maximum length of a Netlink message, trigger memory corruption and execute arbitrary code on the system with elevated privileges.

Mitigation

Update the affected package the Linux Kernel to the latest version.

Vulnerable software versions

SUSE Linux Enterprise Server: 12-SP5

kernel-source-azure: before 4.12.14-16.50.1

kernel-devel-azure: before 4.12.14-16.50.1

kernel-syms-azure: before 4.12.14-16.50.1

kernel-azure-devel: before 4.12.14-16.50.1

kernel-azure-debugsource: before 4.12.14-16.50.1

kernel-azure-debuginfo: before 4.12.14-16.50.1

kernel-azure-base-debuginfo: before 4.12.14-16.50.1

kernel-azure-base: before 4.12.14-16.50.1

kernel-azure: before 4.12.14-16.50.1

CPE2.3

External links

https://www.suse.com/support/update/announcement/2021/suse-su-20211175-1/

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

14) Allocation of resources without limits or throttling

EUVDB-ID: #VU92417

Risk: Low

CVSSv4.0: 4.3 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2021-28038

CWE-ID: CWE-770 - Allocation of Resources Without Limits or Throttling

Exploit availability: No

Description

The vulnerability allows a local user to a crash the entire system.

The vulnerability exists due to allocation of resources without limits or throttling error within the xenvif_tx_action() function in drivers/net/xen-netback/netback.c. A local user can a crash the entire system.

Mitigation

Update the affected package the Linux Kernel to the latest version.

Vulnerable software versions

SUSE Linux Enterprise Server: 12-SP5

kernel-source-azure: before 4.12.14-16.50.1

kernel-devel-azure: before 4.12.14-16.50.1

kernel-syms-azure: before 4.12.14-16.50.1

kernel-azure-devel: before 4.12.14-16.50.1

kernel-azure-debugsource: before 4.12.14-16.50.1

kernel-azure-debuginfo: before 4.12.14-16.50.1

kernel-azure-base-debuginfo: before 4.12.14-16.50.1

kernel-azure-base: before 4.12.14-16.50.1

kernel-azure: before 4.12.14-16.50.1

CPE2.3

External links

https://www.suse.com/support/update/announcement/2021/suse-su-20211175-1/

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

15) Out-of-bounds write

EUVDB-ID: #VU56817

Risk: Low

CVSSv4.0: 5.9 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2021-28660

CWE-ID: CWE-787 - Out-of-bounds write

Exploit availability: No

Description

The vulnerability allows a local user to compromise vulnerable system.

The vulnerability exists due to a boundary error when processing untrusted input in the "rtw_wx_set_scan" in drivers/staging/rtl8188eu/os_dep/ioctl_linux.c. A local user can trigger out-of-bounds write and execute arbitrary code on the target system.

Mitigation

Update the affected package the Linux Kernel to the latest version.

Vulnerable software versions

SUSE Linux Enterprise Server: 12-SP5

kernel-source-azure: before 4.12.14-16.50.1

kernel-devel-azure: before 4.12.14-16.50.1

kernel-syms-azure: before 4.12.14-16.50.1

kernel-azure-devel: before 4.12.14-16.50.1

kernel-azure-debugsource: before 4.12.14-16.50.1

kernel-azure-debuginfo: before 4.12.14-16.50.1

kernel-azure-base-debuginfo: before 4.12.14-16.50.1

kernel-azure-base: before 4.12.14-16.50.1

kernel-azure: before 4.12.14-16.50.1

CPE2.3

External links

https://www.suse.com/support/update/announcement/2021/suse-su-20211175-1/

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

16) Improper Initialization

EUVDB-ID: #VU63658

Risk: Low

CVSSv4.0: 4.3 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2021-28688

CWE-ID: CWE-665 - Improper Initialization

Exploit availability: No

Description

The vulnerability allows a local user to perform a denial of service attack.

The vulnerability exists due to improper initialization of pointers such that subsequent cleanup code wouldn't use uninitialized or stale values. A local user can perform a denial of service attack.

Mitigation

Update the affected package the Linux Kernel to the latest version.

Vulnerable software versions

SUSE Linux Enterprise Server: 12-SP5

kernel-source-azure: before 4.12.14-16.50.1

kernel-devel-azure: before 4.12.14-16.50.1

kernel-syms-azure: before 4.12.14-16.50.1

kernel-azure-devel: before 4.12.14-16.50.1

kernel-azure-debugsource: before 4.12.14-16.50.1

kernel-azure-debuginfo: before 4.12.14-16.50.1

kernel-azure-base-debuginfo: before 4.12.14-16.50.1

kernel-azure-base: before 4.12.14-16.50.1

kernel-azure: before 4.12.14-16.50.1

CPE2.3

External links

https://www.suse.com/support/update/announcement/2021/suse-su-20211175-1/

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

17) Race condition

EUVDB-ID: #VU63573

Risk: Low

CVSSv4.0: 4.3 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2021-28964

CWE-ID: CWE-362 - Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

Exploit availability: No

Description

The vulnerability allows a local user to perform a denial of service attack.

The vulnerability exists due to a race condition in the get_old_root() function in fs/btrfs/ctree.c component in the Linux kernel. A local user can exploit the race and perform a denial of service attack.

Mitigation

Update the affected package the Linux Kernel to the latest version.

Vulnerable software versions

SUSE Linux Enterprise Server: 12-SP5

kernel-source-azure: before 4.12.14-16.50.1

kernel-devel-azure: before 4.12.14-16.50.1

kernel-syms-azure: before 4.12.14-16.50.1

kernel-azure-devel: before 4.12.14-16.50.1

kernel-azure-debugsource: before 4.12.14-16.50.1

kernel-azure-debuginfo: before 4.12.14-16.50.1

kernel-azure-base-debuginfo: before 4.12.14-16.50.1

kernel-azure-base: before 4.12.14-16.50.1

kernel-azure: before 4.12.14-16.50.1

CPE2.3

External links

https://www.suse.com/support/update/announcement/2021/suse-su-20211175-1/

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

18) Resource exhaustion

EUVDB-ID: #VU64830

Risk: Low

CVSSv4.0: 4.3 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2021-28971

CWE-ID: CWE-400 - Resource exhaustion

Exploit availability: No

Description

The vulnerability allows a local user to perform a denial of service (DoS) attack.

The vulnerability exists due to mishandling of PEBS status in a PEBS record In intel_pmu_drain_pebs_nhm in arch/x86/events/intel/ds.c in the Linux kernel. A local user can trigger resource exhaustion and perform a denial of service (DoS) attack.

Mitigation

Update the affected package the Linux Kernel to the latest version.

Vulnerable software versions

SUSE Linux Enterprise Server: 12-SP5

kernel-source-azure: before 4.12.14-16.50.1

kernel-devel-azure: before 4.12.14-16.50.1

kernel-syms-azure: before 4.12.14-16.50.1

kernel-azure-devel: before 4.12.14-16.50.1

kernel-azure-debugsource: before 4.12.14-16.50.1

kernel-azure-debuginfo: before 4.12.14-16.50.1

kernel-azure-base-debuginfo: before 4.12.14-16.50.1

kernel-azure-base: before 4.12.14-16.50.1

kernel-azure: before 4.12.14-16.50.1

CPE2.3

External links

https://www.suse.com/support/update/announcement/2021/suse-su-20211175-1/

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

19) Buffer overflow

EUVDB-ID: #VU56819

Risk: Low

CVSSv4.0: 5.7 [CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2021-28972

CWE-ID: CWE-119 - Memory corruption

Exploit availability: No

Description

The vulnerability allows a local user to execute arbitrary code on the target system.

The vulnerability exists due to a boundary error in the drivers/pci/hotplug/rpadlpar_sysfs.c. A local administrator can trigger memory corruption and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation

Update the affected package the Linux Kernel to the latest version.

Vulnerable software versions

SUSE Linux Enterprise Server: 12-SP5

kernel-source-azure: before 4.12.14-16.50.1

kernel-devel-azure: before 4.12.14-16.50.1

kernel-syms-azure: before 4.12.14-16.50.1

kernel-azure-devel: before 4.12.14-16.50.1

kernel-azure-debugsource: before 4.12.14-16.50.1

kernel-azure-debuginfo: before 4.12.14-16.50.1

kernel-azure-base-debuginfo: before 4.12.14-16.50.1

kernel-azure-base: before 4.12.14-16.50.1

kernel-azure: before 4.12.14-16.50.1

CPE2.3

External links

https://www.suse.com/support/update/announcement/2021/suse-su-20211175-1/

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

20) Input validation error

EUVDB-ID: #VU93697

Risk: Low

CVSSv4.0: 4.3 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2021-29264

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows a local user to perform a denial of service (DoS) attack.

The vulnerability exists due to improper input validation within the gfar_add_rx_frag() and gfar_clean_rx_ring() functions in drivers/net/ethernet/freescale/gianfar.c. A local user can perform a denial of service (DoS) attack.

Mitigation

Update the affected package the Linux Kernel to the latest version.

Vulnerable software versions

SUSE Linux Enterprise Server: 12-SP5

kernel-source-azure: before 4.12.14-16.50.1

kernel-devel-azure: before 4.12.14-16.50.1

kernel-syms-azure: before 4.12.14-16.50.1

kernel-azure-devel: before 4.12.14-16.50.1

kernel-azure-debugsource: before 4.12.14-16.50.1

kernel-azure-debuginfo: before 4.12.14-16.50.1

kernel-azure-base-debuginfo: before 4.12.14-16.50.1

kernel-azure-base: before 4.12.14-16.50.1

kernel-azure: before 4.12.14-16.50.1

CPE2.3

External links

https://www.suse.com/support/update/announcement/2021/suse-su-20211175-1/

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

21) Race condition

EUVDB-ID: #VU91488

Risk: Low

CVSSv4.0: 1.9 [CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2021-29265

CWE-ID: CWE-362 - Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

Exploit availability: No

Description

The vulnerability allows a local user to perform a denial of service (DoS) attack.

The vulnerability exists due to a race condition within the usbip_sockfd_store() function in drivers/usb/usbip/stub_dev.c. A local user can perform a denial of service (DoS) attack.

Mitigation

Update the affected package the Linux Kernel to the latest version.

Vulnerable software versions

SUSE Linux Enterprise Server: 12-SP5

kernel-source-azure: before 4.12.14-16.50.1

kernel-devel-azure: before 4.12.14-16.50.1

kernel-syms-azure: before 4.12.14-16.50.1

kernel-azure-devel: before 4.12.14-16.50.1

kernel-azure-debugsource: before 4.12.14-16.50.1

kernel-azure-debuginfo: before 4.12.14-16.50.1

kernel-azure-base-debuginfo: before 4.12.14-16.50.1

kernel-azure-base: before 4.12.14-16.50.1

kernel-azure: before 4.12.14-16.50.1

CPE2.3

External links

https://www.suse.com/support/update/announcement/2021/suse-su-20211175-1/

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

22) Information disclosure

EUVDB-ID: #VU57040

Risk: Low

CVSSv4.0: 4.3 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2021-29647

CWE-ID: CWE-200 - Information exposure

Exploit availability: No

Description

The vulnerability allows a local user to gain access to potentially sensitive information.

The vulnerability exists due to an error in qrtr_recvmsg(0 function in net/qrtr/qrtr.c caused by a partially uninitialized data structure. A local user can read sensitive information from kernel memory.

Mitigation

Update the affected package the Linux Kernel to the latest version.

Vulnerable software versions

SUSE Linux Enterprise Server: 12-SP5

kernel-source-azure: before 4.12.14-16.50.1

kernel-devel-azure: before 4.12.14-16.50.1

kernel-syms-azure: before 4.12.14-16.50.1

kernel-azure-devel: before 4.12.14-16.50.1

kernel-azure-debugsource: before 4.12.14-16.50.1

kernel-azure-debuginfo: before 4.12.14-16.50.1

kernel-azure-base-debuginfo: before 4.12.14-16.50.1

kernel-azure-base: before 4.12.14-16.50.1

kernel-azure: before 4.12.14-16.50.1

CPE2.3

External links

https://www.suse.com/support/update/announcement/2021/suse-su-20211175-1/

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

23) Integer overflow

EUVDB-ID: #VU51551

Risk: Low

CVSSv4.0: 4.3 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2021-3428

CWE-ID: CWE-190 - Integer overflow

Exploit availability: No

Description

The vulnerability allows a local user to perform a denial of service (DoS) attack.

The vulnerability exists due to integer overflow in fs/ext4/extents.c in ext4_es_cache_extent() function, if an extent tree is corrupted in a crafted ext4 filesystem. A local user can mount a specially crafted filesystem and perform a denial of service (DoS) attack.

Mitigation

Update the affected package the Linux Kernel to the latest version.

Vulnerable software versions

SUSE Linux Enterprise Server: 12-SP5

kernel-source-azure: before 4.12.14-16.50.1

kernel-devel-azure: before 4.12.14-16.50.1

kernel-syms-azure: before 4.12.14-16.50.1

kernel-azure-devel: before 4.12.14-16.50.1

kernel-azure-debugsource: before 4.12.14-16.50.1

kernel-azure-debuginfo: before 4.12.14-16.50.1

kernel-azure-base-debuginfo: before 4.12.14-16.50.1

kernel-azure-base: before 4.12.14-16.50.1

kernel-azure: before 4.12.14-16.50.1

CPE2.3

External links

https://www.suse.com/support/update/announcement/2021/suse-su-20211175-1/

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

24) Out-of-bounds read

EUVDB-ID: #VU90368

Risk: Low

CVSSv4.0: 5.9 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2021-3444

CWE-ID: CWE-125 - Out-of-bounds read

Exploit availability: No

Description

The vulnerability allows a local user to execute arbitrary code.

The vulnerability exists due to an out-of-bounds read error within the fixup_bpf_calls() function in kernel/bpf/verifier.c. A local user can execute arbitrary code.

Mitigation

Update the affected package the Linux Kernel to the latest version.

Vulnerable software versions

SUSE Linux Enterprise Server: 12-SP5

kernel-source-azure: before 4.12.14-16.50.1

kernel-devel-azure: before 4.12.14-16.50.1

kernel-syms-azure: before 4.12.14-16.50.1

kernel-azure-devel: before 4.12.14-16.50.1

kernel-azure-debugsource: before 4.12.14-16.50.1

kernel-azure-debuginfo: before 4.12.14-16.50.1

kernel-azure-base-debuginfo: before 4.12.14-16.50.1

kernel-azure-base: before 4.12.14-16.50.1

kernel-azure: before 4.12.14-16.50.1

CPE2.3

External links

https://www.suse.com/support/update/announcement/2021/suse-su-20211175-1/

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

Risk	Medium
Patch available	YES
Number of vulnerabilities	24
CVE-ID	CVE-2020-0433 CVE-2020-27170 CVE-2020-27171 CVE-2020-27815 CVE-2020-29368 CVE-2020-29374 CVE-2020-35519 CVE-2021-26930 CVE-2021-26931 CVE-2021-26932 CVE-2021-27363 CVE-2021-27364 CVE-2021-27365 CVE-2021-28038 CVE-2021-28660 CVE-2021-28688 CVE-2021-28964 CVE-2021-28971 CVE-2021-28972 CVE-2021-29264 CVE-2021-29265 CVE-2021-29647 CVE-2021-3428 CVE-2021-3444
CWE-ID	CWE-416 CWE-203 CWE-193 CWE-125 CWE-787 CWE-362 CWE-399 CWE-770 CWE-119 CWE-200 CWE-264 CWE-665 CWE-400 CWE-20 CWE-190
Exploitation vector	Network
Public exploit	N/A
Vulnerable software	SUSE Linux Enterprise Server Operating systems & Components / Operating system kernel-source-azure Operating systems & Components / Operating system package or component kernel-devel-azure Operating systems & Components / Operating system package or component kernel-syms-azure Operating systems & Components / Operating system package or component kernel-azure-devel Operating systems & Components / Operating system package or component kernel-azure-debugsource Operating systems & Components / Operating system package or component kernel-azure-debuginfo Operating systems & Components / Operating system package or component kernel-azure-base-debuginfo Operating systems & Components / Operating system package or component kernel-azure-base Operating systems & Components / Operating system package or component kernel-azure Operating systems & Components / Operating system package or component
Vendor	SUSE