SB2024082185 - Improper locking in Linux kernel io_uring
Published: August 21, 2024 Updated: May 12, 2025
Security Bulletin ID
SB2024082185
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 security vulnerability.
1) Improper locking (CVE-ID: CVE-2023-52903)
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.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/de77faee280163ff03b7ab64af6c9d779a43d4c4
- https://git.kernel.org/stable/c/ed4629d1e968359fbb91d0a3780b1e86a2c08845
- https://git.kernel.org/stable/c/7fc3990dad04a677606337ebc61964094d6cb41b
- https://git.kernel.org/stable/c/544d163d659d45a206d8929370d5a2984e546cb7
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.165
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.89
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.1.7
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.2