SUSE update for the Linux Kernel



Risk Medium
Patch available YES
Number of vulnerabilities 7
CVE-ID CVE-2021-21781
CVE-2021-22543
CVE-2021-35039
CVE-2021-3609
CVE-2021-3612
CVE-2021-3659
CVE-2021-37576
CWE-ID CWE-200
CWE-119
CWE-347
CWE-362
CWE-787
CWE-476
Exploitation vector Network
Public exploit Public exploit code for vulnerability #2 is available.
Public exploit code for vulnerability #4 is available.
Vulnerable software
SUSE Linux Enterprise Workstation Extension
Operating systems & Components / Operating system

SUSE Linux Enterprise Module for Legacy Software
Operating systems & Components / Operating system

SUSE Linux Enterprise High Availability
Operating systems & Components / Operating system

SUSE Linux Enterprise Module for Live Patching
Operating systems & Components / Operating system

SUSE Linux Enterprise Module for Development Tools
Operating systems & Components / Operating system

SUSE Linux Enterprise Module for Basesystem
Operating systems & Components / Operating system

ocfs2-kmp-default-debuginfo
Operating systems & Components / Operating system package or component

ocfs2-kmp-default
Operating systems & Components / Operating system package or component

gfs2-kmp-default-debuginfo
Operating systems & Components / Operating system package or component

gfs2-kmp-default
Operating systems & Components / Operating system package or component

dlm-kmp-default-debuginfo
Operating systems & Components / Operating system package or component

dlm-kmp-default
Operating systems & Components / Operating system package or component

cluster-md-kmp-default-debuginfo
Operating systems & Components / Operating system package or component

cluster-md-kmp-default
Operating systems & Components / Operating system package or component

kernel-zfcpdump-debugsource
Operating systems & Components / Operating system package or component

kernel-zfcpdump-debuginfo
Operating systems & Components / Operating system package or component

kernel-zfcpdump
Operating systems & Components / Operating system package or component

kernel-macros
Operating systems & Components / Operating system package or component

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

kernel-64kb-devel-debuginfo
Operating systems & Components / Operating system package or component

kernel-64kb-devel
Operating systems & Components / Operating system package or component

kernel-64kb-debugsource
Operating systems & Components / Operating system package or component

kernel-64kb-debuginfo
Operating systems & Components / Operating system package or component

kernel-64kb
Operating systems & Components / Operating system package or component

kernel-preempt
Operating systems & Components / Operating system package or component

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

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

kernel-default-base
Operating systems & Components / Operating system package or component

kernel-default
Operating systems & Components / Operating system package or component

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

kernel-docs
Operating systems & Components / Operating system package or component

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

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

kernel-syms
Operating systems & Components / Operating system package or component

kernel-obs-build-debugsource
Operating systems & Components / Operating system package or component

kernel-obs-build
Operating systems & Components / Operating system package or component

reiserfs-kmp-default-debuginfo
Operating systems & Components / Operating system package or component

reiserfs-kmp-default
Operating systems & Components / Operating system package or component

kernel-livepatch-5_3_18-59_19-default
Operating systems & Components / Operating system package or component

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

kernel-default-livepatch
Operating systems & Components / Operating system package or component

kernel-preempt-extra-debuginfo
Operating systems & Components / Operating system package or component

kernel-preempt-extra
Operating systems & Components / Operating system package or component

kernel-preempt-debugsource
Operating systems & Components / Operating system package or component

kernel-preempt-debuginfo
Operating systems & Components / Operating system package or component

kernel-default-extra-debuginfo
Operating systems & Components / Operating system package or component

kernel-default-extra
Operating systems & Components / Operating system package or component

kernel-default-debugsource
Operating systems & Components / Operating system package or component

kernel-default-debuginfo
Operating systems & Components / Operating system package or component

Vendor SUSE

Security Bulletin

This security bulletin contains information about 7 vulnerabilities.

1) Information disclosure

EUVDB-ID: #VU54395

Risk: Low

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

CVE-ID: CVE-2021-21781

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 in the ARM SIGPAGE functionality. A userland application can read the contents of the sigpage, which can leak kernel memory contents.

Mitigation

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

Vulnerable software versions

SUSE Linux Enterprise Workstation Extension: 15-SP3

SUSE Linux Enterprise Module for Legacy Software: 15-SP3

SUSE Linux Enterprise High Availability: 15-SP3

SUSE Linux Enterprise Module for Live Patching: 15-SP3

SUSE Linux Enterprise Module for Development Tools: 15-SP3

SUSE Linux Enterprise Module for Basesystem: 15-SP3

ocfs2-kmp-default-debuginfo: before 5.3.18-59.19.1

ocfs2-kmp-default: before 5.3.18-59.19.1

gfs2-kmp-default-debuginfo: before 5.3.18-59.19.1

gfs2-kmp-default: before 5.3.18-59.19.1

dlm-kmp-default-debuginfo: before 5.3.18-59.19.1

dlm-kmp-default: before 5.3.18-59.19.1

cluster-md-kmp-default-debuginfo: before 5.3.18-59.19.1

cluster-md-kmp-default: before 5.3.18-59.19.1

kernel-zfcpdump-debugsource: before 5.3.18-59.19.1

kernel-zfcpdump-debuginfo: before 5.3.18-59.19.1

kernel-zfcpdump: before 5.3.18-59.19.1

kernel-macros: before 5.3.18-59.19.1

kernel-devel: before 5.3.18-59.19.1

kernel-64kb-devel-debuginfo: before 5.3.18-59.19.1

kernel-64kb-devel: before 5.3.18-59.19.1

kernel-64kb-debugsource: before 5.3.18-59.19.1

kernel-64kb-debuginfo: before 5.3.18-59.19.1

kernel-64kb: before 5.3.18-59.19.1

kernel-preempt: before 5.3.18-59.19.1

kernel-default-devel-debuginfo: before 5.3.18-59.19.1

kernel-default-devel: before 5.3.18-59.19.1

kernel-default-base: before 5.3.18-59.19.1.18.10.1

kernel-default: before 5.3.18-59.19.1

kernel-source: before 5.3.18-59.19.1

kernel-docs: before 5.3.18-59.19.1

kernel-preempt-devel-debuginfo: before 5.3.18-59.19.1

kernel-preempt-devel: before 5.3.18-59.19.1

kernel-syms: before 5.3.18-59.19.1

kernel-obs-build-debugsource: before 5.3.18-59.19.1

kernel-obs-build: before 5.3.18-59.19.1

reiserfs-kmp-default-debuginfo: before 5.3.18-59.19.1

reiserfs-kmp-default: before 5.3.18-59.19.1

kernel-livepatch-5_3_18-59_19-default: before 1-7.3.1

kernel-default-livepatch-devel: before 5.3.18-59.19.1

kernel-default-livepatch: before 5.3.18-59.19.1

kernel-preempt-extra-debuginfo: before 5.3.18-59.19.1

kernel-preempt-extra: before 5.3.18-59.19.1

kernel-preempt-debugsource: before 5.3.18-59.19.1

kernel-preempt-debuginfo: before 5.3.18-59.19.1

kernel-default-extra-debuginfo: before 5.3.18-59.19.1

kernel-default-extra: before 5.3.18-59.19.1

kernel-default-debugsource: before 5.3.18-59.19.1

kernel-default-debuginfo: before 5.3.18-59.19.1

CPE2.3 External links

https://www.suse.com/support/update/announcement/2021/suse-su-20212687-1/


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) Buffer overflow

EUVDB-ID: #VU56018

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-2021-22543

CWE-ID: CWE-119 - Memory corruption

Exploit availability: Yes

Description

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

The vulnerability exists due to a boundary error in Linux kernel when handling VM_IO|VM_PFNMAP vmas in KVM. A local user can  can bypass RO checks and cause the pages to get freed while still accessible by the VMM and guest. As a result, an attacker with the ability to start and control a VM to read/write random pages of memory, can trigger memory corruption 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 Workstation Extension: 15-SP3

SUSE Linux Enterprise Module for Legacy Software: 15-SP3

SUSE Linux Enterprise High Availability: 15-SP3

SUSE Linux Enterprise Module for Live Patching: 15-SP3

SUSE Linux Enterprise Module for Development Tools: 15-SP3

SUSE Linux Enterprise Module for Basesystem: 15-SP3

ocfs2-kmp-default-debuginfo: before 5.3.18-59.19.1

ocfs2-kmp-default: before 5.3.18-59.19.1

gfs2-kmp-default-debuginfo: before 5.3.18-59.19.1

gfs2-kmp-default: before 5.3.18-59.19.1

dlm-kmp-default-debuginfo: before 5.3.18-59.19.1

dlm-kmp-default: before 5.3.18-59.19.1

cluster-md-kmp-default-debuginfo: before 5.3.18-59.19.1

cluster-md-kmp-default: before 5.3.18-59.19.1

kernel-zfcpdump-debugsource: before 5.3.18-59.19.1

kernel-zfcpdump-debuginfo: before 5.3.18-59.19.1

kernel-zfcpdump: before 5.3.18-59.19.1

kernel-macros: before 5.3.18-59.19.1

kernel-devel: before 5.3.18-59.19.1

kernel-64kb-devel-debuginfo: before 5.3.18-59.19.1

kernel-64kb-devel: before 5.3.18-59.19.1

kernel-64kb-debugsource: before 5.3.18-59.19.1

kernel-64kb-debuginfo: before 5.3.18-59.19.1

kernel-64kb: before 5.3.18-59.19.1

kernel-preempt: before 5.3.18-59.19.1

kernel-default-devel-debuginfo: before 5.3.18-59.19.1

kernel-default-devel: before 5.3.18-59.19.1

kernel-default-base: before 5.3.18-59.19.1.18.10.1

kernel-default: before 5.3.18-59.19.1

kernel-source: before 5.3.18-59.19.1

kernel-docs: before 5.3.18-59.19.1

kernel-preempt-devel-debuginfo: before 5.3.18-59.19.1

kernel-preempt-devel: before 5.3.18-59.19.1

kernel-syms: before 5.3.18-59.19.1

kernel-obs-build-debugsource: before 5.3.18-59.19.1

kernel-obs-build: before 5.3.18-59.19.1

reiserfs-kmp-default-debuginfo: before 5.3.18-59.19.1

reiserfs-kmp-default: before 5.3.18-59.19.1

kernel-livepatch-5_3_18-59_19-default: before 1-7.3.1

kernel-default-livepatch-devel: before 5.3.18-59.19.1

kernel-default-livepatch: before 5.3.18-59.19.1

kernel-preempt-extra-debuginfo: before 5.3.18-59.19.1

kernel-preempt-extra: before 5.3.18-59.19.1

kernel-preempt-debugsource: before 5.3.18-59.19.1

kernel-preempt-debuginfo: before 5.3.18-59.19.1

kernel-default-extra-debuginfo: before 5.3.18-59.19.1

kernel-default-extra: before 5.3.18-59.19.1

kernel-default-debugsource: before 5.3.18-59.19.1

kernel-default-debuginfo: before 5.3.18-59.19.1

CPE2.3 External links

https://www.suse.com/support/update/announcement/2021/suse-su-20212687-1/


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.

3) Improper Verification of Cryptographic Signature

EUVDB-ID: #VU66477

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-2021-35039

CWE-ID: CWE-347 - Improper Verification of Cryptographic Signature

Exploit availability: No

Description

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

The vulnerability exists due to improper signature handling in the kernel/module.c in Linux kernel. If the kernel module is not signed, it still can be loaded into the system via init_module if module.sig_enforce=1 command-line argument is used. As a result, a local user can load unsigned and potentially malicious kernel modules.

Mitigation

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

Vulnerable software versions

SUSE Linux Enterprise Workstation Extension: 15-SP3

SUSE Linux Enterprise Module for Legacy Software: 15-SP3

SUSE Linux Enterprise High Availability: 15-SP3

SUSE Linux Enterprise Module for Live Patching: 15-SP3

SUSE Linux Enterprise Module for Development Tools: 15-SP3

SUSE Linux Enterprise Module for Basesystem: 15-SP3

ocfs2-kmp-default-debuginfo: before 5.3.18-59.19.1

ocfs2-kmp-default: before 5.3.18-59.19.1

gfs2-kmp-default-debuginfo: before 5.3.18-59.19.1

gfs2-kmp-default: before 5.3.18-59.19.1

dlm-kmp-default-debuginfo: before 5.3.18-59.19.1

dlm-kmp-default: before 5.3.18-59.19.1

cluster-md-kmp-default-debuginfo: before 5.3.18-59.19.1

cluster-md-kmp-default: before 5.3.18-59.19.1

kernel-zfcpdump-debugsource: before 5.3.18-59.19.1

kernel-zfcpdump-debuginfo: before 5.3.18-59.19.1

kernel-zfcpdump: before 5.3.18-59.19.1

kernel-macros: before 5.3.18-59.19.1

kernel-devel: before 5.3.18-59.19.1

kernel-64kb-devel-debuginfo: before 5.3.18-59.19.1

kernel-64kb-devel: before 5.3.18-59.19.1

kernel-64kb-debugsource: before 5.3.18-59.19.1

kernel-64kb-debuginfo: before 5.3.18-59.19.1

kernel-64kb: before 5.3.18-59.19.1

kernel-preempt: before 5.3.18-59.19.1

kernel-default-devel-debuginfo: before 5.3.18-59.19.1

kernel-default-devel: before 5.3.18-59.19.1

kernel-default-base: before 5.3.18-59.19.1.18.10.1

kernel-default: before 5.3.18-59.19.1

kernel-source: before 5.3.18-59.19.1

kernel-docs: before 5.3.18-59.19.1

kernel-preempt-devel-debuginfo: before 5.3.18-59.19.1

kernel-preempt-devel: before 5.3.18-59.19.1

kernel-syms: before 5.3.18-59.19.1

kernel-obs-build-debugsource: before 5.3.18-59.19.1

kernel-obs-build: before 5.3.18-59.19.1

reiserfs-kmp-default-debuginfo: before 5.3.18-59.19.1

reiserfs-kmp-default: before 5.3.18-59.19.1

kernel-livepatch-5_3_18-59_19-default: before 1-7.3.1

kernel-default-livepatch-devel: before 5.3.18-59.19.1

kernel-default-livepatch: before 5.3.18-59.19.1

kernel-preempt-extra-debuginfo: before 5.3.18-59.19.1

kernel-preempt-extra: before 5.3.18-59.19.1

kernel-preempt-debugsource: before 5.3.18-59.19.1

kernel-preempt-debuginfo: before 5.3.18-59.19.1

kernel-default-extra-debuginfo: before 5.3.18-59.19.1

kernel-default-extra: before 5.3.18-59.19.1

kernel-default-debugsource: before 5.3.18-59.19.1

kernel-default-debuginfo: before 5.3.18-59.19.1

CPE2.3 External links

https://www.suse.com/support/update/announcement/2021/suse-su-20212687-1/


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: #VU54292

Risk: Medium

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:Green]

CVE-ID: CVE-2021-3609

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 escalate privileges on the system.

The vulnerability exists due to a race condition in the CAN BCM networking protocol (net/can/bcm.c) in the Linux kernel ranging from version 2.6.25 to mainline 5.13-rc6. A local user can exploit the race and gain unauthorized access to sensitive information and escalate privileges on the system.

Mitigation

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

Vulnerable software versions

SUSE Linux Enterprise Workstation Extension: 15-SP3

SUSE Linux Enterprise Module for Legacy Software: 15-SP3

SUSE Linux Enterprise High Availability: 15-SP3

SUSE Linux Enterprise Module for Live Patching: 15-SP3

SUSE Linux Enterprise Module for Development Tools: 15-SP3

SUSE Linux Enterprise Module for Basesystem: 15-SP3

ocfs2-kmp-default-debuginfo: before 5.3.18-59.19.1

ocfs2-kmp-default: before 5.3.18-59.19.1

gfs2-kmp-default-debuginfo: before 5.3.18-59.19.1

gfs2-kmp-default: before 5.3.18-59.19.1

dlm-kmp-default-debuginfo: before 5.3.18-59.19.1

dlm-kmp-default: before 5.3.18-59.19.1

cluster-md-kmp-default-debuginfo: before 5.3.18-59.19.1

cluster-md-kmp-default: before 5.3.18-59.19.1

kernel-zfcpdump-debugsource: before 5.3.18-59.19.1

kernel-zfcpdump-debuginfo: before 5.3.18-59.19.1

kernel-zfcpdump: before 5.3.18-59.19.1

kernel-macros: before 5.3.18-59.19.1

kernel-devel: before 5.3.18-59.19.1

kernel-64kb-devel-debuginfo: before 5.3.18-59.19.1

kernel-64kb-devel: before 5.3.18-59.19.1

kernel-64kb-debugsource: before 5.3.18-59.19.1

kernel-64kb-debuginfo: before 5.3.18-59.19.1

kernel-64kb: before 5.3.18-59.19.1

kernel-preempt: before 5.3.18-59.19.1

kernel-default-devel-debuginfo: before 5.3.18-59.19.1

kernel-default-devel: before 5.3.18-59.19.1

kernel-default-base: before 5.3.18-59.19.1.18.10.1

kernel-default: before 5.3.18-59.19.1

kernel-source: before 5.3.18-59.19.1

kernel-docs: before 5.3.18-59.19.1

kernel-preempt-devel-debuginfo: before 5.3.18-59.19.1

kernel-preempt-devel: before 5.3.18-59.19.1

kernel-syms: before 5.3.18-59.19.1

kernel-obs-build-debugsource: before 5.3.18-59.19.1

kernel-obs-build: before 5.3.18-59.19.1

reiserfs-kmp-default-debuginfo: before 5.3.18-59.19.1

reiserfs-kmp-default: before 5.3.18-59.19.1

kernel-livepatch-5_3_18-59_19-default: before 1-7.3.1

kernel-default-livepatch-devel: before 5.3.18-59.19.1

kernel-default-livepatch: before 5.3.18-59.19.1

kernel-preempt-extra-debuginfo: before 5.3.18-59.19.1

kernel-preempt-extra: before 5.3.18-59.19.1

kernel-preempt-debugsource: before 5.3.18-59.19.1

kernel-preempt-debuginfo: before 5.3.18-59.19.1

kernel-default-extra-debuginfo: before 5.3.18-59.19.1

kernel-default-extra: before 5.3.18-59.19.1

kernel-default-debugsource: before 5.3.18-59.19.1

kernel-default-debuginfo: before 5.3.18-59.19.1

CPE2.3 External links

https://www.suse.com/support/update/announcement/2021/suse-su-20212687-1/


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.

5) Out-of-bounds write

EUVDB-ID: #VU55231

Risk: Low

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

CVE-ID: CVE-2021-3612

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 in joystick devices subsystem in Linux kernel. A local user can make a specially crafted JSIOCSBTNMAP IOCTL call, trigger out-of-bounds write and execute arbitrary code with escalated privileges.

Mitigation

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

Vulnerable software versions

SUSE Linux Enterprise Workstation Extension: 15-SP3

SUSE Linux Enterprise Module for Legacy Software: 15-SP3

SUSE Linux Enterprise High Availability: 15-SP3

SUSE Linux Enterprise Module for Live Patching: 15-SP3

SUSE Linux Enterprise Module for Development Tools: 15-SP3

SUSE Linux Enterprise Module for Basesystem: 15-SP3

ocfs2-kmp-default-debuginfo: before 5.3.18-59.19.1

ocfs2-kmp-default: before 5.3.18-59.19.1

gfs2-kmp-default-debuginfo: before 5.3.18-59.19.1

gfs2-kmp-default: before 5.3.18-59.19.1

dlm-kmp-default-debuginfo: before 5.3.18-59.19.1

dlm-kmp-default: before 5.3.18-59.19.1

cluster-md-kmp-default-debuginfo: before 5.3.18-59.19.1

cluster-md-kmp-default: before 5.3.18-59.19.1

kernel-zfcpdump-debugsource: before 5.3.18-59.19.1

kernel-zfcpdump-debuginfo: before 5.3.18-59.19.1

kernel-zfcpdump: before 5.3.18-59.19.1

kernel-macros: before 5.3.18-59.19.1

kernel-devel: before 5.3.18-59.19.1

kernel-64kb-devel-debuginfo: before 5.3.18-59.19.1

kernel-64kb-devel: before 5.3.18-59.19.1

kernel-64kb-debugsource: before 5.3.18-59.19.1

kernel-64kb-debuginfo: before 5.3.18-59.19.1

kernel-64kb: before 5.3.18-59.19.1

kernel-preempt: before 5.3.18-59.19.1

kernel-default-devel-debuginfo: before 5.3.18-59.19.1

kernel-default-devel: before 5.3.18-59.19.1

kernel-default-base: before 5.3.18-59.19.1.18.10.1

kernel-default: before 5.3.18-59.19.1

kernel-source: before 5.3.18-59.19.1

kernel-docs: before 5.3.18-59.19.1

kernel-preempt-devel-debuginfo: before 5.3.18-59.19.1

kernel-preempt-devel: before 5.3.18-59.19.1

kernel-syms: before 5.3.18-59.19.1

kernel-obs-build-debugsource: before 5.3.18-59.19.1

kernel-obs-build: before 5.3.18-59.19.1

reiserfs-kmp-default-debuginfo: before 5.3.18-59.19.1

reiserfs-kmp-default: before 5.3.18-59.19.1

kernel-livepatch-5_3_18-59_19-default: before 1-7.3.1

kernel-default-livepatch-devel: before 5.3.18-59.19.1

kernel-default-livepatch: before 5.3.18-59.19.1

kernel-preempt-extra-debuginfo: before 5.3.18-59.19.1

kernel-preempt-extra: before 5.3.18-59.19.1

kernel-preempt-debugsource: before 5.3.18-59.19.1

kernel-preempt-debuginfo: before 5.3.18-59.19.1

kernel-default-extra-debuginfo: before 5.3.18-59.19.1

kernel-default-extra: before 5.3.18-59.19.1

kernel-default-debugsource: before 5.3.18-59.19.1

kernel-default-debuginfo: before 5.3.18-59.19.1

CPE2.3 External links

https://www.suse.com/support/update/announcement/2021/suse-su-20212687-1/


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) NULL pointer dereference

EUVDB-ID: #VU74547

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-2021-3659

CWE-ID: CWE-476 - NULL Pointer Dereference

Exploit availability: No

Description

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

The vulnerability exists due to a NULL pointer dereference error in the way the user closes the LR-WPAN connection within the IEEE 802.15.4 wireless networking subsystem. 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 Workstation Extension: 15-SP3

SUSE Linux Enterprise Module for Legacy Software: 15-SP3

SUSE Linux Enterprise High Availability: 15-SP3

SUSE Linux Enterprise Module for Live Patching: 15-SP3

SUSE Linux Enterprise Module for Development Tools: 15-SP3

SUSE Linux Enterprise Module for Basesystem: 15-SP3

ocfs2-kmp-default-debuginfo: before 5.3.18-59.19.1

ocfs2-kmp-default: before 5.3.18-59.19.1

gfs2-kmp-default-debuginfo: before 5.3.18-59.19.1

gfs2-kmp-default: before 5.3.18-59.19.1

dlm-kmp-default-debuginfo: before 5.3.18-59.19.1

dlm-kmp-default: before 5.3.18-59.19.1

cluster-md-kmp-default-debuginfo: before 5.3.18-59.19.1

cluster-md-kmp-default: before 5.3.18-59.19.1

kernel-zfcpdump-debugsource: before 5.3.18-59.19.1

kernel-zfcpdump-debuginfo: before 5.3.18-59.19.1

kernel-zfcpdump: before 5.3.18-59.19.1

kernel-macros: before 5.3.18-59.19.1

kernel-devel: before 5.3.18-59.19.1

kernel-64kb-devel-debuginfo: before 5.3.18-59.19.1

kernel-64kb-devel: before 5.3.18-59.19.1

kernel-64kb-debugsource: before 5.3.18-59.19.1

kernel-64kb-debuginfo: before 5.3.18-59.19.1

kernel-64kb: before 5.3.18-59.19.1

kernel-preempt: before 5.3.18-59.19.1

kernel-default-devel-debuginfo: before 5.3.18-59.19.1

kernel-default-devel: before 5.3.18-59.19.1

kernel-default-base: before 5.3.18-59.19.1.18.10.1

kernel-default: before 5.3.18-59.19.1

kernel-source: before 5.3.18-59.19.1

kernel-docs: before 5.3.18-59.19.1

kernel-preempt-devel-debuginfo: before 5.3.18-59.19.1

kernel-preempt-devel: before 5.3.18-59.19.1

kernel-syms: before 5.3.18-59.19.1

kernel-obs-build-debugsource: before 5.3.18-59.19.1

kernel-obs-build: before 5.3.18-59.19.1

reiserfs-kmp-default-debuginfo: before 5.3.18-59.19.1

reiserfs-kmp-default: before 5.3.18-59.19.1

kernel-livepatch-5_3_18-59_19-default: before 1-7.3.1

kernel-default-livepatch-devel: before 5.3.18-59.19.1

kernel-default-livepatch: before 5.3.18-59.19.1

kernel-preempt-extra-debuginfo: before 5.3.18-59.19.1

kernel-preempt-extra: before 5.3.18-59.19.1

kernel-preempt-debugsource: before 5.3.18-59.19.1

kernel-preempt-debuginfo: before 5.3.18-59.19.1

kernel-default-extra-debuginfo: before 5.3.18-59.19.1

kernel-default-extra: before 5.3.18-59.19.1

kernel-default-debugsource: before 5.3.18-59.19.1

kernel-default-debuginfo: before 5.3.18-59.19.1

CPE2.3 External links

https://www.suse.com/support/update/announcement/2021/suse-su-20212687-1/


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 write

EUVDB-ID: #VU57101

Risk: Medium

CVSSv4.0: 4.8 [CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2021-37576

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

Exploit availability: No

Description

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

The vulnerability exists due to a boundary error in arch/powerpc/kvm/book3s_rtas.c in the Linux kernel through 5.13.5 on the powerpc platform. An attacker on KVM guest OS can cause host OS memory corruption via rtas_args.nargs and execute arbitrary code on the host OS.

Mitigation

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

Vulnerable software versions

SUSE Linux Enterprise Workstation Extension: 15-SP3

SUSE Linux Enterprise Module for Legacy Software: 15-SP3

SUSE Linux Enterprise High Availability: 15-SP3

SUSE Linux Enterprise Module for Live Patching: 15-SP3

SUSE Linux Enterprise Module for Development Tools: 15-SP3

SUSE Linux Enterprise Module for Basesystem: 15-SP3

ocfs2-kmp-default-debuginfo: before 5.3.18-59.19.1

ocfs2-kmp-default: before 5.3.18-59.19.1

gfs2-kmp-default-debuginfo: before 5.3.18-59.19.1

gfs2-kmp-default: before 5.3.18-59.19.1

dlm-kmp-default-debuginfo: before 5.3.18-59.19.1

dlm-kmp-default: before 5.3.18-59.19.1

cluster-md-kmp-default-debuginfo: before 5.3.18-59.19.1

cluster-md-kmp-default: before 5.3.18-59.19.1

kernel-zfcpdump-debugsource: before 5.3.18-59.19.1

kernel-zfcpdump-debuginfo: before 5.3.18-59.19.1

kernel-zfcpdump: before 5.3.18-59.19.1

kernel-macros: before 5.3.18-59.19.1

kernel-devel: before 5.3.18-59.19.1

kernel-64kb-devel-debuginfo: before 5.3.18-59.19.1

kernel-64kb-devel: before 5.3.18-59.19.1

kernel-64kb-debugsource: before 5.3.18-59.19.1

kernel-64kb-debuginfo: before 5.3.18-59.19.1

kernel-64kb: before 5.3.18-59.19.1

kernel-preempt: before 5.3.18-59.19.1

kernel-default-devel-debuginfo: before 5.3.18-59.19.1

kernel-default-devel: before 5.3.18-59.19.1

kernel-default-base: before 5.3.18-59.19.1.18.10.1

kernel-default: before 5.3.18-59.19.1

kernel-source: before 5.3.18-59.19.1

kernel-docs: before 5.3.18-59.19.1

kernel-preempt-devel-debuginfo: before 5.3.18-59.19.1

kernel-preempt-devel: before 5.3.18-59.19.1

kernel-syms: before 5.3.18-59.19.1

kernel-obs-build-debugsource: before 5.3.18-59.19.1

kernel-obs-build: before 5.3.18-59.19.1

reiserfs-kmp-default-debuginfo: before 5.3.18-59.19.1

reiserfs-kmp-default: before 5.3.18-59.19.1

kernel-livepatch-5_3_18-59_19-default: before 1-7.3.1

kernel-default-livepatch-devel: before 5.3.18-59.19.1

kernel-default-livepatch: before 5.3.18-59.19.1

kernel-preempt-extra-debuginfo: before 5.3.18-59.19.1

kernel-preempt-extra: before 5.3.18-59.19.1

kernel-preempt-debugsource: before 5.3.18-59.19.1

kernel-preempt-debuginfo: before 5.3.18-59.19.1

kernel-default-extra-debuginfo: before 5.3.18-59.19.1

kernel-default-extra: before 5.3.18-59.19.1

kernel-default-debugsource: before 5.3.18-59.19.1

kernel-default-debuginfo: before 5.3.18-59.19.1

CPE2.3 External links

https://www.suse.com/support/update/announcement/2021/suse-su-20212687-1/


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.



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