Use-after-free in Linux kernel - CVE-2022-49388

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Main Vulnerability Database Vulnerabilities #VU104430

Use-after-free in Linux kernel - CVE-2022-49388

Published: February 26, 2025 / Updated: May 11, 2025


Vulnerability identifier: #VU104430
CSH Severity: Low
CVSS v4 BT: 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-2022-49388
CWE-ID: CWE-416
Exploitation vector: Local access
Exploit availability: No public exploit available

Vulnerability details

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

The vulnerability exists due to a use-after-free error within the spin_unlock() function in drivers/mtd/ubi/vmt.c. A local user can escalate privileges on the system.


Affected software

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
openEuler
kgraft-patch-4_12_14-122_255-default
kernel-default-debuginfo
gfs2-kmp-default
kernel-syms
dlm-kmp-default-debuginfo
kernel-default-devel-debuginfo
cluster-md-kmp-default-debuginfo
gfs2-kmp-default-debuginfo
dlm-kmp-default
kernel-default-devel
cluster-md-kmp-default
kernel-default-base
kernel-default-debugsource
kernel-default
kernel-source
kernel-devel
kernel-macros
kernel-default-kgraft-devel
kernel-default-kgraft
kernel-default-man
ocfs2-kmp-default-debuginfo
ocfs2-kmp-default
kernel-default-base-debuginfo
bpftool
kernel
bpftool-debuginfo
kernel-debuginfo
kernel-debugsource
kernel-tools
kernel-tools-debuginfo
kernel-tools-devel
perf
perf-debuginfo
python2-perf
python2-perf-debuginfo
python3-perf
python3-perf-debuginfo

How to mitigate CVE-2022-49388

Install update from vendor's website.

Linux kernel - update to 5.17.15
kgraft-patch-4_12_14-122_255-default - update to 1-8.5.1
kernel-default-debuginfo - update to 4.12.14-122.255.1
gfs2-kmp-default - update to 4.12.14-122.255.1
kernel-syms - update to 4.12.14-122.255.1
dlm-kmp-default-debuginfo - update to 4.12.14-122.255.1
kernel-default-devel-debuginfo - update to 4.12.14-122.255.1
cluster-md-kmp-default-debuginfo - update to 4.12.14-122.255.1
gfs2-kmp-default-debuginfo - update to 4.12.14-122.255.1
dlm-kmp-default - update to 4.12.14-122.255.1
kernel-default-devel - update to 4.12.14-122.255.1
cluster-md-kmp-default - update to 4.12.14-122.255.1
kernel-default-base - update to 4.12.14-122.255.1
kernel-default-debugsource - update to 4.12.14-122.255.1
kernel-default - update to 4.12.14-122.255.1
kernel-source - update to 4.12.14-122.255.1
kernel-devel - update to 4.12.14-122.255.1
kernel-macros - update to 4.12.14-122.255.1
kernel-default-kgraft-devel - update to 4.12.14-122.255.1
kernel-default-kgraft - update to 4.12.14-122.255.1
kernel-default-man - update to 4.12.14-122.255.1
ocfs2-kmp-default-debuginfo - update to 4.12.14-122.255.1
ocfs2-kmp-default - update to 4.12.14-122.255.1
kernel-default-base-debuginfo - update to 4.12.14-122.255.1
bpftool - update to 4.19.90-2503.5.0.0321
kernel - update to 4.19.90-2503.5.0.0321
bpftool-debuginfo - update to 4.19.90-2503.5.0.0321
kernel-debuginfo - update to 4.19.90-2503.5.0.0321
kernel-debugsource - update to 4.19.90-2503.5.0.0321
kernel-devel - update to 4.19.90-2503.5.0.0321
kernel-source - update to 4.19.90-2503.5.0.0321
kernel-tools - update to 4.19.90-2503.5.0.0321
kernel-tools-debuginfo - update to 4.19.90-2503.5.0.0321
kernel-tools-devel - update to 4.19.90-2503.5.0.0321
perf - update to 4.19.90-2503.5.0.0321
perf-debuginfo - update to 4.19.90-2503.5.0.0321
python2-perf - update to 4.19.90-2503.5.0.0321
python2-perf-debuginfo - update to 4.19.90-2503.5.0.0321
python3-perf - update to 4.19.90-2503.5.0.0321
python3-perf-debuginfo - update to 4.19.90-2503.5.0.0321

External References

Related Security Bulletins