NULL pointer dereference in Linux kernel - CVE-2022-50080

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Main Vulnerability Database Vulnerabilities #VU111502

NULL pointer dereference in Linux kernel - CVE-2022-50080

Published: June 19, 2025 / Updated: June 21, 2025


Vulnerability identifier: #VU111502
CSH Severity: Low
CVSS v4 BT: 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-2022-50080
CWE-ID: CWE-476
Exploitation vector: Local access
Exploit availability: No public exploit available

Vulnerability details

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

The vulnerability exists due to NULL pointer dereference within the tee_shm_register_user_buf() function in drivers/tee/tee_shm.c. A local user can perform a denial of service (DoS) attack.


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_272-default
kernel-default-base
kernel-default-debuginfo
kernel-default-devel
cluster-md-kmp-default-debuginfo
kernel-syms
gfs2-kmp-default
kernel-default-base-debuginfo
cluster-md-kmp-default
ocfs2-kmp-default
kernel-default-kgraft-devel
dlm-kmp-default-debuginfo
ocfs2-kmp-default-debuginfo
gfs2-kmp-default-debuginfo
dlm-kmp-default
kernel-source
kernel-devel
kernel-macros
kernel-default-man
kernel-default-devel-debuginfo
kernel-default-debugsource
kernel-default-kgraft
kernel-default
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-2022-50080

Install update from vendor's repository.

Linux kernel - update to 5.15.62
kgraft-patch-4_12_14-122_272-default - update to 1-8.3.1
kernel-default-base - update to 4.12.14-122.272.1
kernel-default-debuginfo - update to 4.12.14-122.272.1
kernel-default-devel - update to 4.12.14-122.272.1
cluster-md-kmp-default-debuginfo - update to 4.12.14-122.272.1
kernel-syms - update to 4.12.14-122.272.1
gfs2-kmp-default - update to 4.12.14-122.272.1
kernel-default-base-debuginfo - update to 4.12.14-122.272.1
cluster-md-kmp-default - update to 4.12.14-122.272.1
ocfs2-kmp-default - update to 4.12.14-122.272.1
kernel-default-kgraft-devel - update to 4.12.14-122.272.1
dlm-kmp-default-debuginfo - update to 4.12.14-122.272.1
ocfs2-kmp-default-debuginfo - update to 4.12.14-122.272.1
gfs2-kmp-default-debuginfo - update to 4.12.14-122.272.1
dlm-kmp-default - update to 4.12.14-122.272.1
kernel-source - update to 4.12.14-122.272.1
kernel-devel - update to 4.12.14-122.272.1
kernel-macros - update to 4.12.14-122.272.1
kernel-default-man - update to 4.12.14-122.272.1
kernel-default-devel-debuginfo - update to 4.12.14-122.272.1
kernel-default-debugsource - update to 4.12.14-122.272.1
kernel-default-kgraft - update to 4.12.14-122.272.1
kernel-default - update to 4.12.14-122.272.1
bpftool - update to 4.19.90-2507.1.0.0334
kernel - update to 4.19.90-2507.1.0.0334
bpftool-debuginfo - update to 4.19.90-2507.1.0.0334
kernel-debuginfo - update to 4.19.90-2507.1.0.0334
kernel-debugsource - update to 4.19.90-2507.1.0.0334
kernel-devel - update to 4.19.90-2507.1.0.0334
kernel-source - update to 4.19.90-2507.1.0.0334
kernel-tools - update to 4.19.90-2507.1.0.0334
kernel-tools-debuginfo - update to 4.19.90-2507.1.0.0334
kernel-tools-devel - update to 4.19.90-2507.1.0.0334
perf - update to 4.19.90-2507.1.0.0334
perf-debuginfo - update to 4.19.90-2507.1.0.0334
python2-perf - update to 4.19.90-2507.1.0.0334
python2-perf-debuginfo - update to 4.19.90-2507.1.0.0334
python3-perf - update to 4.19.90-2507.1.0.0334
python3-perf-debuginfo - update to 4.19.90-2507.1.0.0334

External References

Related Security Bulletins