Improper locking in Linux kernel - CVE-2022-50816

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Main Vulnerability Database Vulnerabilities #VU120823

Improper locking in Linux kernel - CVE-2022-50816

Published: December 30, 2025 / Updated: December 30, 2025


Vulnerability identifier: #VU120823
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-2022-50816
CWE-ID: CWE-667
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 improper locking within the ipip6_tunnel_bind_dev() function in net/ipv6/sit.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_293-default
ocfs2-kmp-default-debuginfo
kernel-default-kgraft
cluster-md-kmp-default-debuginfo
kernel-default-base-debuginfo
gfs2-kmp-default
dlm-kmp-default-debuginfo
dlm-kmp-default
cluster-md-kmp-default
kernel-default-base
kernel-default-debuginfo
ocfs2-kmp-default
kernel-default-devel
kernel-syms
gfs2-kmp-default-debuginfo
kernel-source
kernel-devel
kernel-macros
kernel-default-man
kernel-default-devel-debuginfo
kernel-default-debugsource
kernel-default-kgraft-devel
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-2022-50816

Install update from vendor's repository.

Linux kernel - addressed in versions 4.14.305, 4.19.272, 5.4.231, 5.10.153, 5.15.77, 6.0.7, 6.1
kgraft-patch-4_12_14-122_293-default - update to 1-8.3.1
ocfs2-kmp-default-debuginfo - update to 4.12.14-122.293.1
kernel-default-kgraft - update to 4.12.14-122.293.1
cluster-md-kmp-default-debuginfo - update to 4.12.14-122.293.1
kernel-default-base-debuginfo - update to 4.12.14-122.293.1
gfs2-kmp-default - update to 4.12.14-122.293.1
dlm-kmp-default-debuginfo - update to 4.12.14-122.293.1
dlm-kmp-default - update to 4.12.14-122.293.1
cluster-md-kmp-default - update to 4.12.14-122.293.1
kernel-default-base - update to 4.12.14-122.293.1
kernel-default-debuginfo - update to 4.12.14-122.293.1
ocfs2-kmp-default - update to 4.12.14-122.293.1
kernel-default-devel - update to 4.12.14-122.293.1
kernel-syms - update to 4.12.14-122.293.1
gfs2-kmp-default-debuginfo - update to 4.12.14-122.293.1
kernel-source - update to 4.12.14-122.293.1
kernel-devel - update to 4.12.14-122.293.1
kernel-macros - update to 4.12.14-122.293.1
kernel-default-man - update to 4.12.14-122.293.1
kernel-default-devel-debuginfo - update to 4.12.14-122.293.1
kernel-default-debugsource - update to 4.12.14-122.293.1
kernel-default-kgraft-devel - update to 4.12.14-122.293.1
kernel-default - update to 4.12.14-122.293.1
bpftool - update to 4.19.90-2601.5.0.0360
kernel - update to 4.19.90-2601.5.0.0360
bpftool-debuginfo - update to 4.19.90-2601.5.0.0360
kernel-debuginfo - update to 4.19.90-2601.5.0.0360
kernel-debugsource - update to 4.19.90-2601.5.0.0360
kernel-devel - update to 4.19.90-2601.5.0.0360
kernel-source - update to 4.19.90-2601.5.0.0360
kernel-tools - update to 4.19.90-2601.5.0.0360
kernel-tools-debuginfo - update to 4.19.90-2601.5.0.0360
kernel-tools-devel - update to 4.19.90-2601.5.0.0360
perf - update to 4.19.90-2601.5.0.0360
perf-debuginfo - update to 4.19.90-2601.5.0.0360
python2-perf - update to 4.19.90-2601.5.0.0360
python2-perf-debuginfo - update to 4.19.90-2601.5.0.0360
python3-perf - update to 4.19.90-2601.5.0.0360
python3-perf-debuginfo - update to 4.19.90-2601.5.0.0360

External References

Related Security Bulletins