SUSE update for the Linux Kernel



| Updated: 2023-06-18
Risk Low
Patch available YES
Number of vulnerabilities 13
CVE-ID CVE-2018-7755
CVE-2019-20811
CVE-2021-20292
CVE-2021-20321
CVE-2021-38208
CVE-2021-43389
CVE-2022-1011
CVE-2022-1280
CVE-2022-1353
CVE-2022-1419
CVE-2022-1516
CVE-2022-23960
CVE-2022-28748
CWE-ID CWE-264
CWE-20
CWE-416
CWE-362
CWE-476
CWE-129
CWE-200
CWE-1037
CWE-401
Exploitation vector Network
Public exploit Public exploit code for vulnerability #7 is available.
Vulnerable software
 SUSE Linux Enterprise Server
Operating systems & Components / Operating system

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

kernel-source-azure
Operating systems & Components / Operating system package or component

kernel-devel-azure
Operating systems & Components / Operating system package or component

Vendor SUSE

Security Bulletin

This security bulletin contains information about 13 vulnerabilities.

1) Security restrictions bypass

EUVDB-ID: #VU10918

Risk: Low

CVSSv4.0: 1.2 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2018-7755

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

Exploit availability: No

Description

The vulnerability allows a local unauthenticated attacker to bypass security restrictions on the target system.

The weakness exists in the drivers/block/floppy.c source code in the fd_locked_ioctl function due to insufficient security restrictions. A local attacker can bypass security restrictions through the system floppy drive and obtain kernel code and data from the system.

Mitigation

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

Vulnerable software versions

SUSE Linux Enterprise Server: 12-SP5

kernel-syms-azure: before 4.12.14-16.97.1

kernel-azure-devel: before 4.12.14-16.97.1

kernel-azure-debugsource: before 4.12.14-16.97.1

kernel-azure-debuginfo: before 4.12.14-16.97.1

kernel-azure-base-debuginfo: before 4.12.14-16.97.1

kernel-azure-base: before 4.12.14-16.97.1

kernel-azure: before 4.12.14-16.97.1

kernel-source-azure: before 4.12.14-16.97.1

kernel-devel-azure: before 4.12.14-16.97.1

CPE2.3 External links

https://www.suse.com/support/update/announcement/2022/suse-su-20221651-1/


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) Input validation error

EUVDB-ID: #VU34374

Risk: Low

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

CVE-ID: CVE-2019-20811

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows a local authenticated user to manipulate data.

An issue was discovered in the Linux kernel before 5.0.6. In rx_queue_add_kobject() and netdev_queue_add_kobject() in net/core/net-sysfs.c, a reference count is mishandled, aka CID-a3e23f719f5c.

Mitigation

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

Vulnerable software versions

SUSE Linux Enterprise Server: 12-SP5

kernel-syms-azure: before 4.12.14-16.97.1

kernel-azure-devel: before 4.12.14-16.97.1

kernel-azure-debugsource: before 4.12.14-16.97.1

kernel-azure-debuginfo: before 4.12.14-16.97.1

kernel-azure-base-debuginfo: before 4.12.14-16.97.1

kernel-azure-base: before 4.12.14-16.97.1

kernel-azure: before 4.12.14-16.97.1

kernel-source-azure: before 4.12.14-16.97.1

kernel-devel-azure: before 4.12.14-16.97.1

CPE2.3 External links

https://www.suse.com/support/update/announcement/2022/suse-su-20221651-1/


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) Use-after-free

EUVDB-ID: #VU63382

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-2021-20292

CWE-ID: CWE-416 - Use After Free

Exploit availability: No

Description

The vulnerability allows a local user to escalate privileges.

The vulnerability exists due to a use-after-free error in drivers/gpu/drm/nouveau/nouveau_sgdma.c in nouveau_sgdma_create_ttm in Nouveau DRM subsystem. A local user can escalate privileges and execute code in the context of the kernel.

Mitigation

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

Vulnerable software versions

SUSE Linux Enterprise Server: 12-SP5

kernel-syms-azure: before 4.12.14-16.97.1

kernel-azure-devel: before 4.12.14-16.97.1

kernel-azure-debugsource: before 4.12.14-16.97.1

kernel-azure-debuginfo: before 4.12.14-16.97.1

kernel-azure-base-debuginfo: before 4.12.14-16.97.1

kernel-azure-base: before 4.12.14-16.97.1

kernel-azure: before 4.12.14-16.97.1

kernel-source-azure: before 4.12.14-16.97.1

kernel-devel-azure: before 4.12.14-16.97.1

CPE2.3 External links

https://www.suse.com/support/update/announcement/2022/suse-su-20221651-1/


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) Race condition

EUVDB-ID: #VU59084

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-2021-20321

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) attacks.

The vulnerability exists due to a race condition when accessing file object in the Linux kernel OverlayFS subsystem. A local user can rename files in specific way with OverlayFS 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-syms-azure: before 4.12.14-16.97.1

kernel-azure-devel: before 4.12.14-16.97.1

kernel-azure-debugsource: before 4.12.14-16.97.1

kernel-azure-debuginfo: before 4.12.14-16.97.1

kernel-azure-base-debuginfo: before 4.12.14-16.97.1

kernel-azure-base: before 4.12.14-16.97.1

kernel-azure: before 4.12.14-16.97.1

kernel-source-azure: before 4.12.14-16.97.1

kernel-devel-azure: before 4.12.14-16.97.1

CPE2.3 External links

https://www.suse.com/support/update/announcement/2022/suse-su-20221651-1/


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) NULL pointer dereference

EUVDB-ID: #VU63383

Risk: Low

CVSSv4.0: 4.9 [CVSS:4.0/AV:N/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-2021-38208

CWE-ID: CWE-476 - NULL Pointer Dereference

Exploit availability: No

Description

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

The vulnerability exists due to a NULL pointer dereference error in the net/nfc/llcp_sock.c component. A remote attacker can make getsockname call 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-syms-azure: before 4.12.14-16.97.1

kernel-azure-devel: before 4.12.14-16.97.1

kernel-azure-debugsource: before 4.12.14-16.97.1

kernel-azure-debuginfo: before 4.12.14-16.97.1

kernel-azure-base-debuginfo: before 4.12.14-16.97.1

kernel-azure-base: before 4.12.14-16.97.1

kernel-azure: before 4.12.14-16.97.1

kernel-source-azure: before 4.12.14-16.97.1

kernel-devel-azure: before 4.12.14-16.97.1

CPE2.3 External links

https://www.suse.com/support/update/announcement/2022/suse-su-20221651-1/


Q & A

Can this vulnerability be exploited remotely?

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

Is there known malware, which exploits this vulnerability?

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

6) Improper Validation of Array Index

EUVDB-ID: #VU63385

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-2021-43389

CWE-ID: CWE-129 - Improper Validation of Array Index

Exploit availability: No

Description

The vulnerability allows a local user to execute arbitrary code with elevated privileges.

The vulnerability exists due to improper validation of array index in the ISDN CAPI implementation within detach_capi_ctr() function in drivers/isdn/capi/kcapi.c. A local user can send specially crafted data to the system and execute arbitrary code 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-syms-azure: before 4.12.14-16.97.1

kernel-azure-devel: before 4.12.14-16.97.1

kernel-azure-debugsource: before 4.12.14-16.97.1

kernel-azure-debuginfo: before 4.12.14-16.97.1

kernel-azure-base-debuginfo: before 4.12.14-16.97.1

kernel-azure-base: before 4.12.14-16.97.1

kernel-azure: before 4.12.14-16.97.1

kernel-source-azure: before 4.12.14-16.97.1

kernel-devel-azure: before 4.12.14-16.97.1

CPE2.3 External links

https://www.suse.com/support/update/announcement/2022/suse-su-20221651-1/


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) Use-after-free

EUVDB-ID: #VU63386

Risk: Low

CVSSv4.0: 7.1 [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:P/U:Clear]

CVE-ID: CVE-2022-1011

CWE-ID: CWE-416 - Use After Free

Exploit availability: Yes

Description

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

The vulnerability exists due to a use-after-free error in the write() function of FUSE filesystem. A local user can retireve (partial) /etc/shadow hashes and execute arbitrary code 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-syms-azure: before 4.12.14-16.97.1

kernel-azure-devel: before 4.12.14-16.97.1

kernel-azure-debugsource: before 4.12.14-16.97.1

kernel-azure-debuginfo: before 4.12.14-16.97.1

kernel-azure-base-debuginfo: before 4.12.14-16.97.1

kernel-azure-base: before 4.12.14-16.97.1

kernel-azure: before 4.12.14-16.97.1

kernel-source-azure: before 4.12.14-16.97.1

kernel-devel-azure: before 4.12.14-16.97.1

CPE2.3 External links

https://www.suse.com/support/update/announcement/2022/suse-su-20221651-1/


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. However, proof of concept for this vulnerability is available.

8) Use-after-free

EUVDB-ID: #VU62358

Risk: Low

CVSSv4.0: 4.4 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2022-1280

CWE-ID: CWE-416 - Use After Free

Exploit availability: No

Description

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

The vulnerability exists due to a use-after-free error within the drm_lease_held() function in drivers/gpu/drm/drm_lease.c in the Linux kernel. A local user can run a specially crafted program to trigger a use-after-free error and crash the kernel or 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-syms-azure: before 4.12.14-16.97.1

kernel-azure-devel: before 4.12.14-16.97.1

kernel-azure-debugsource: before 4.12.14-16.97.1

kernel-azure-debuginfo: before 4.12.14-16.97.1

kernel-azure-base-debuginfo: before 4.12.14-16.97.1

kernel-azure-base: before 4.12.14-16.97.1

kernel-azure: before 4.12.14-16.97.1

kernel-source-azure: before 4.12.14-16.97.1

kernel-devel-azure: before 4.12.14-16.97.1

CPE2.3 External links

https://www.suse.com/support/update/announcement/2022/suse-su-20221651-1/


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.

9) Information disclosure

EUVDB-ID: #VU63388

Risk: Low

CVSSv4.0: 4.5 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2022-1353

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 excessive data output by the application in the pfkey_register function in net/key/af_key.c in the Linux kernel. A local user can gain unauthorized access to kernel memory, leading to a system crash or a leak of internal kernel information.

Mitigation

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

Vulnerable software versions

SUSE Linux Enterprise Server: 12-SP5

kernel-syms-azure: before 4.12.14-16.97.1

kernel-azure-devel: before 4.12.14-16.97.1

kernel-azure-debugsource: before 4.12.14-16.97.1

kernel-azure-debuginfo: before 4.12.14-16.97.1

kernel-azure-base-debuginfo: before 4.12.14-16.97.1

kernel-azure-base: before 4.12.14-16.97.1

kernel-azure: before 4.12.14-16.97.1

kernel-source-azure: before 4.12.14-16.97.1

kernel-devel-azure: before 4.12.14-16.97.1

CPE2.3 External links

https://www.suse.com/support/update/announcement/2022/suse-su-20221651-1/


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) Use-after-free

EUVDB-ID: #VU63418

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-2022-1419

CWE-ID: CWE-416 - Use After Free

Exploit availability: No

Description

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

The vulnerability exists due to a use-after-free error in vgem_gem_dumb_create() function in Linux kernel. A local user can trigger a use-after-free error and execute arbitrary code 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-syms-azure: before 4.12.14-16.97.1

kernel-azure-devel: before 4.12.14-16.97.1

kernel-azure-debugsource: before 4.12.14-16.97.1

kernel-azure-debuginfo: before 4.12.14-16.97.1

kernel-azure-base-debuginfo: before 4.12.14-16.97.1

kernel-azure-base: before 4.12.14-16.97.1

kernel-azure: before 4.12.14-16.97.1

kernel-source-azure: before 4.12.14-16.97.1

kernel-devel-azure: before 4.12.14-16.97.1

CPE2.3 External links

https://www.suse.com/support/update/announcement/2022/suse-su-20221651-1/


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) NULL pointer dereference

EUVDB-ID: #VU63158

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-2022-1516

CWE-ID: CWE-476 - NULL Pointer Dereference

Exploit availability: No

Description

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

The vulnerability exists due to NULL pointer dereference error in the Linux kernel’s X.25 set of standardized network protocols functionality. A local user can terminate session using a simulated Ethernet card 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-syms-azure: before 4.12.14-16.97.1

kernel-azure-devel: before 4.12.14-16.97.1

kernel-azure-debugsource: before 4.12.14-16.97.1

kernel-azure-debuginfo: before 4.12.14-16.97.1

kernel-azure-base-debuginfo: before 4.12.14-16.97.1

kernel-azure-base: before 4.12.14-16.97.1

kernel-azure: before 4.12.14-16.97.1

kernel-source-azure: before 4.12.14-16.97.1

kernel-devel-azure: before 4.12.14-16.97.1

CPE2.3 External links

https://www.suse.com/support/update/announcement/2022/suse-su-20221651-1/


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) Processor optimization removal or modification of security-critical code

EUVDB-ID: #VU65007

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-2022-23960

CWE-ID: CWE-1037 - Processor optimization removal or modification of security-critical code

Exploit availability: No

Description

The vulnerability allows a local user to obtain potentially sensitive information.

The vulnerability exists due to improper restrictions of cache speculation. A local user can leverage the shared branch history in the Branch History Buffer (BHB) to influence mispredicted branches and gain access to sensitive information.

The vulnerability was dubbed Spectre-BHB.

Mitigation

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

Vulnerable software versions

SUSE Linux Enterprise Server: 12-SP5

kernel-syms-azure: before 4.12.14-16.97.1

kernel-azure-devel: before 4.12.14-16.97.1

kernel-azure-debugsource: before 4.12.14-16.97.1

kernel-azure-debuginfo: before 4.12.14-16.97.1

kernel-azure-base-debuginfo: before 4.12.14-16.97.1

kernel-azure-base: before 4.12.14-16.97.1

kernel-azure: before 4.12.14-16.97.1

kernel-source-azure: before 4.12.14-16.97.1

kernel-devel-azure: before 4.12.14-16.97.1

CPE2.3 External links

https://www.suse.com/support/update/announcement/2022/suse-su-20221651-1/


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) Memory leak

EUVDB-ID: #VU63419

Risk: Low

CVSSv4.0: 1.7 [CVSS:4.0/AV:P/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2022-28748

CWE-ID: CWE-401 - Missing release of memory after effective lifetime

Exploit availability: No

Description

The vulnerability allows an attacker to gain access to sensitive information.

The vulnerability exists due memory leak when working with ax88179_178a devices. An attacker with physical access to the system can inject a malicious USB-drive and remotely obtain data 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-syms-azure: before 4.12.14-16.97.1

kernel-azure-devel: before 4.12.14-16.97.1

kernel-azure-debugsource: before 4.12.14-16.97.1

kernel-azure-debuginfo: before 4.12.14-16.97.1

kernel-azure-base-debuginfo: before 4.12.14-16.97.1

kernel-azure-base: before 4.12.14-16.97.1

kernel-azure: before 4.12.14-16.97.1

kernel-source-azure: before 4.12.14-16.97.1

kernel-devel-azure: before 4.12.14-16.97.1

CPE2.3 External links

https://www.suse.com/support/update/announcement/2022/suse-su-20221651-1/


Q & A

Can this vulnerability be exploited remotely?

No. The attacker should have physical access to the system in order to successfully exploit this vulnerability.

Is there known malware, which exploits this vulnerability?

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



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