NULL pointer dereference in Linux kernel - CVE-2022-50879

Vulnerability identifier: #VU120791

CSH Severity: Low

CVSS v4: 6.8 [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]

CVE-ID: CVE-2022-50879

CWE-ID: CWE-476

Exploitation vector: Local access

Exploit availability: No public exploit available

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

The vulnerability exists due to NULL pointer dereference within the __dead_end_function() function in tools/objtool/check.c. A local user can perform a denial of service (DoS) attack.

Linux kernel
SUSE Linux Enterprise Server 12 SP5
SUSE Linux Enterprise Server 12 SP5 LTSS Extended
SUSE Linux Enterprise High Performance Computing 12
SUSE Linux Enterprise Server 12
SUSE Linux Enterprise Server for SAP Applications 12
SUSE Linux Enterprise Live Patching
kgraft-patch-4_12_14-122_290-default
dlm-kmp-default
kernel-default-kgraft-devel
kernel-default-kgraft
kernel-default-devel-debuginfo
kernel-default-man
kernel-source
kernel-devel
kernel-macros
kernel-default
ocfs2-kmp-default
cluster-md-kmp-default
kernel-default-debugsource
gfs2-kmp-default-debuginfo
kernel-default-debuginfo
kernel-syms
kernel-default-base-debuginfo
kernel-default-base
dlm-kmp-default-debuginfo
kernel-default-devel
cluster-md-kmp-default-debuginfo
ocfs2-kmp-default-debuginfo
gfs2-kmp-default

Install update from vendor's repository.

Linux kernel - update to 6.1.3
kgraft-patch-4_12_14-122_290-default - update to 1-8.7.1
dlm-kmp-default - update to 4.12.14-122.290.1
kernel-default-kgraft-devel - update to 4.12.14-122.290.1
kernel-default-kgraft - update to 4.12.14-122.290.1
kernel-default-devel-debuginfo - update to 4.12.14-122.290.1
kernel-default-man - update to 4.12.14-122.290.1
kernel-source - update to 4.12.14-122.290.1
kernel-devel - update to 4.12.14-122.290.1
kernel-macros - update to 4.12.14-122.290.1
kernel-default - update to 4.12.14-122.290.1
ocfs2-kmp-default - update to 4.12.14-122.290.1
cluster-md-kmp-default - update to 4.12.14-122.290.1
kernel-default-debugsource - update to 4.12.14-122.290.1
gfs2-kmp-default-debuginfo - update to 4.12.14-122.290.1
kernel-default-debuginfo - update to 4.12.14-122.290.1
kernel-syms - update to 4.12.14-122.290.1
kernel-default-base-debuginfo - update to 4.12.14-122.290.1
kernel-default-base - update to 4.12.14-122.290.1
dlm-kmp-default-debuginfo - update to 4.12.14-122.290.1
kernel-default-devel - update to 4.12.14-122.290.1
cluster-md-kmp-default-debuginfo - update to 4.12.14-122.290.1
ocfs2-kmp-default-debuginfo - update to 4.12.14-122.290.1
gfs2-kmp-default - update to 4.12.14-122.290.1

• https://git.kernel.org/stable/c/0af0e115ff59d638f45416a004cdd8edb38db40c
• https://git.kernel.org/stable/c/23a249b1185cdd5bfb6971d1608ba49e589f2288
• https://git.kernel.org/stable/c/38b9415abbd703438ebbc6fb74990bd0fbddc5b9
• https://git.kernel.org/stable/c/418ef921cce2d7415fab7e3e93529227f239e4bb
• https://git.kernel.org/stable/c/efb11fdb3e1a9f694fa12b70b21e69e55ec59c36
• https://git.kernel.org/stable/c/fcee8a2d4db404a93e690d79e7273b6ef9d33575
• https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.1.3

• NULL pointer dereference in Linux kernel objtool
• SUSE update for the Linux Kernel