Use-after-free in Linux kernel - CVE-2022-50569

Vulnerability identifier: #VU117573

CSH Severity: Low

CVSS v4: 8.5 [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]

CVE-ID: CVE-2022-50569

CWE-ID: CWE-416

Exploitation vector: Local access

Exploit availability: No public exploit available

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

The vulnerability exists due to a use-after-free error within the ipcomp_free_scratches() function in net/xfrm/xfrm_ipcomp.c. A local user can escalate privileges on the system.

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_283-default
ocfs2-kmp-default
kernel-default-kgraft
kernel-default-kgraft-devel
kernel-default-devel-debuginfo
kernel-default-man
kernel-devel
kernel-macros
kernel-source
kernel-default
kernel-default-base
kernel-default-devel
kernel-default-base-debuginfo
ocfs2-kmp-default-debuginfo
gfs2-kmp-default
dlm-kmp-default
kernel-syms
cluster-md-kmp-default-debuginfo
kernel-default-debuginfo
kernel-default-debugsource
gfs2-kmp-default-debuginfo
dlm-kmp-default-debuginfo
cluster-md-kmp-default

Install update from vendor's repository.

Linux kernel - update to 5.19.17
kgraft-patch-4_12_14-122_283-default - update to 1-8.3.1
ocfs2-kmp-default - update to 4.12.14-122.283.1
kernel-default-kgraft - update to 4.12.14-122.283.1
kernel-default-kgraft-devel - update to 4.12.14-122.283.1
kernel-default-devel-debuginfo - update to 4.12.14-122.283.1
kernel-default-man - update to 4.12.14-122.283.1
kernel-devel - update to 4.12.14-122.283.1
kernel-macros - update to 4.12.14-122.283.1
kernel-source - update to 4.12.14-122.283.1
kernel-default - update to 4.12.14-122.283.1
kernel-default-base - update to 4.12.14-122.283.1
kernel-default-devel - update to 4.12.14-122.283.1
kernel-default-base-debuginfo - update to 4.12.14-122.283.1
ocfs2-kmp-default-debuginfo - update to 4.12.14-122.283.1
gfs2-kmp-default - update to 4.12.14-122.283.1
dlm-kmp-default - update to 4.12.14-122.283.1
kernel-syms - update to 4.12.14-122.283.1
cluster-md-kmp-default-debuginfo - update to 4.12.14-122.283.1
kernel-default-debuginfo - update to 4.12.14-122.283.1
kernel-default-debugsource - update to 4.12.14-122.283.1
gfs2-kmp-default-debuginfo - update to 4.12.14-122.283.1
dlm-kmp-default-debuginfo - update to 4.12.14-122.283.1
cluster-md-kmp-default - update to 4.12.14-122.283.1

• https://git.kernel.org/stable/c/03155680191ef0f004b1d6a5714c5b8cd271ab61
• https://git.kernel.org/stable/c/18373ed500f7cd53e24d9b0bd0f1c09d78dba87e
• https://git.kernel.org/stable/c/1e8abde895b3ac6a368cbdb372e8800c49e73a28
• https://git.kernel.org/stable/c/2c19945ce8095d065df550e7fe350cd5cc40c6e6
• https://git.kernel.org/stable/c/8a04d2fc700f717104bfb95b0f6694e448a4537f
• https://git.kernel.org/stable/c/a39f456d62810c0efb43cead22f98d95b53e4b1a
• https://git.kernel.org/stable/c/be81c44242b20fc3bdcc73480ef8aaee56f5d0b6
• https://git.kernel.org/stable/c/debca61df6bc2f65e020656c9c5b878d6b38d30f
• https://git.kernel.org/stable/c/f3bdba4440d82e0da2b1bfc35d3836c8a8e00677
• https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.19.17

• Use-after-free in Linux kernel xfrm
• SUSE update for the Linux Kernel