SB20251001154 - Input validation error in Linux kernel io_uring
Published: October 1, 2025 Updated: October 27, 2025
Security Bulletin ID
SB20251001154
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Input validation error (CVE-ID: CVE-2023-53461)
CWE-ID: CWE-20 - Improper input validation
CVSSv4: 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
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to improper input validation within the io_ring_exit_work() function in io_uring/io_uring.c. A local user can perform a denial of service (DoS) attack.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/28e649dc9947e6525c95e32aa9a8e147925e3f56
- https://git.kernel.org/stable/c/4826c59453b3b4677d6bf72814e7ababdea86949
- https://git.kernel.org/stable/c/58e80cb68b057e974768792c34708c6957810486
- https://git.kernel.org/stable/c/8e29835366138389bfad3b31ea06960d0a77bf77
- https://git.kernel.org/stable/c/b50d6e06cca7b67a3d73ca660dda27662b76e6ea
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.1.39