Improper locking in Linux kernel - CVE-2022-50518

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Main Vulnerability Database Vulnerabilities #VU116806

Improper locking in Linux kernel - CVE-2022-50518

Published: October 8, 2025 / Updated: October 26, 2025


Vulnerability identifier: #VU116806
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-2022-50518
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 pdc_io_reset_devices(), pdc_iodc_print() and pdc_iodc_getc() functions in arch/parisc/kernel/firmware.c. A local user can perform a denial of service (DoS) attack.


Affected software

Linux kernel
openEuler
kernel
bpftool
bpftool-debuginfo
kernel-debuginfo
kernel-debugsource
kernel-devel
kernel-headers
kernel-source
kernel-tools
kernel-tools-debuginfo
kernel-tools-devel
perf
perf-debuginfo
python3-perf
python3-perf-debuginfo

How to mitigate CVE-2022-50518

Install update from vendor's repository.

Linux kernel - addressed in versions 6.0.18, 6.1.4, 6.2
kernel - update to 5.10.0-309.0.0.212
bpftool - update to 5.10.0-309.0.0.212
bpftool-debuginfo - update to 5.10.0-309.0.0.212
kernel-debuginfo - update to 5.10.0-309.0.0.212
kernel-debugsource - update to 5.10.0-309.0.0.212
kernel-devel - update to 5.10.0-309.0.0.212
kernel-headers - update to 5.10.0-309.0.0.212
kernel-source - update to 5.10.0-309.0.0.212
kernel-tools - update to 5.10.0-309.0.0.212
kernel-tools-debuginfo - update to 5.10.0-309.0.0.212
kernel-tools-devel - update to 5.10.0-309.0.0.212
perf - update to 5.10.0-309.0.0.212
perf-debuginfo - update to 5.10.0-309.0.0.212
python3-perf - update to 5.10.0-309.0.0.212
python3-perf-debuginfo - update to 5.10.0-309.0.0.212

External References

Related Security Bulletins