Improper locking in Linux kernel - CVE-2023-52903

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Main Vulnerability Database Vulnerabilities #VU96361

Improper locking in Linux kernel - CVE-2023-52903

Published: August 21, 2024 / Updated: May 12, 2025


Vulnerability identifier: #VU96361
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-2023-52903
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 io_iopoll_complete() function in io_uring/io_uring.c. A local user can perform a denial of service (DoS) attack.


Affected software

Linux kernel
openEuler
kernel
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-2023-52903

Install update from vendor's website.

Linux kernel - addressed in versions 5.10.165, 5.15.89, 6.1.7, 6.2
kernel - update to 5.10.0-136.91.0.172
kernel-debuginfo - update to 5.10.0-136.91.0.172
kernel-debugsource - update to 5.10.0-136.91.0.172
kernel-devel - update to 5.10.0-136.91.0.172
kernel-headers - update to 5.10.0-136.91.0.172
kernel-source - update to 5.10.0-136.91.0.172
kernel-tools - update to 5.10.0-136.91.0.172
kernel-tools-debuginfo - update to 5.10.0-136.91.0.172
kernel-tools-devel - update to 5.10.0-136.91.0.172
perf - update to 5.10.0-136.91.0.172
perf-debuginfo - update to 5.10.0-136.91.0.172
python3-perf - update to 5.10.0-136.91.0.172
python3-perf-debuginfo - update to 5.10.0-136.91.0.172

External References

Related Security Bulletins