Use-after-free in Linux kernel - CVE-2022-50243

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Main Vulnerability Database Vulnerabilities #VU115394

Use-after-free in Linux kernel - CVE-2022-50243

Published: September 16, 2025 / Updated: September 22, 2025


Vulnerability identifier: #VU115394
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-2022-50243
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 sctp_auth_set_key() and sctp_auth_set_active_key() functions in net/sctp/auth.c. A local user can escalate privileges on the system.


Affected software

Linux kernel
openEuler
kernel
bpftool
bpftool-debuginfo
kernel-debuginfo
kernel-debugsource
kernel-devel
kernel-source
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-2022-50243

Install update from vendor's repository.

Linux kernel - update to 5.10.150
kernel - update to 4.19.90-2512.1.0.0354
bpftool - update to 4.19.90-2512.1.0.0354
bpftool-debuginfo - update to 4.19.90-2512.1.0.0354
kernel-debuginfo - update to 4.19.90-2512.1.0.0354
kernel-debugsource - update to 4.19.90-2512.1.0.0354
kernel-devel - update to 4.19.90-2512.1.0.0354
kernel-source - update to 4.19.90-2512.1.0.0354
kernel-tools - update to 4.19.90-2512.1.0.0354
kernel-tools-debuginfo - update to 4.19.90-2512.1.0.0354
kernel-tools-devel - update to 4.19.90-2512.1.0.0354
perf - update to 4.19.90-2512.1.0.0354
perf-debuginfo - update to 4.19.90-2512.1.0.0354
python2-perf - update to 4.19.90-2512.1.0.0354
python2-perf-debuginfo - update to 4.19.90-2512.1.0.0354
python3-perf - update to 4.19.90-2512.1.0.0354
python3-perf-debuginfo - update to 4.19.90-2512.1.0.0354

External References

Related Security Bulletins