Memory leak in Linux kernel - CVE-2022-49682

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Main Vulnerability Database Vulnerabilities #VU104339

Memory leak in Linux kernel - CVE-2022-49682

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


Vulnerability identifier: #VU104339
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-2022-49682
CWE-ID: CWE-401
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 memory leak within the calibrate_ccount() function in arch/xtensa/kernel/time.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-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-2022-49682

Install update from vendor's website.

Linux kernel - update to 4.19.250
kernel - update to 4.19.90-2503.4.0.0320
bpftool - update to 4.19.90-2503.4.0.0320
bpftool-debuginfo - update to 4.19.90-2503.4.0.0320
kernel-debuginfo - update to 4.19.90-2503.4.0.0320
kernel-debugsource - update to 4.19.90-2503.4.0.0320
kernel-devel - update to 4.19.90-2503.4.0.0320
kernel-source - update to 4.19.90-2503.4.0.0320
kernel-tools - update to 4.19.90-2503.4.0.0320
kernel-tools-debuginfo - update to 4.19.90-2503.4.0.0320
kernel-tools-devel - update to 4.19.90-2503.4.0.0320
perf - update to 4.19.90-2503.4.0.0320
perf-debuginfo - update to 4.19.90-2503.4.0.0320
python2-perf - update to 4.19.90-2503.4.0.0320
python2-perf-debuginfo - update to 4.19.90-2503.4.0.0320
python3-perf - update to 4.19.90-2503.4.0.0320
python3-perf-debuginfo - update to 4.19.90-2503.4.0.0320

External References

Related Security Bulletins