SB2025022492 - Use-after-free in Linux kernel io_uring
Published: February 24, 2025 Updated: May 11, 2025
Security Bulletin ID
SB2025022492
Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Code execution
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Use-after-free (CVE-ID: CVE-2023-52926)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error within the io_rw_init_file() function in io_uring/rw.c. A local user can escalate privileges on the system.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/6c27fc6a783c8a77c756dd5461b15e465020d075
- https://git.kernel.org/stable/c/72060434a14caea20925e492310d6e680e3f9007
- https://git.kernel.org/stable/c/a08d195b586a217d76b42062f88f375a3eedda4d
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.1.122
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.6.68
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.7