SB20250916122 - Use-after-free in Linux kernel core
Published: September 16, 2025 Updated: September 22, 2025
Security Bulletin ID
SB20250916122
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-2023-53186)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error within the skb_try_coalesce() function in net/core/skbuff.c. A local user can escalate privileges on the system.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/0646dc31ca886693274df5749cd0c8c1eaaeb5ca
- https://git.kernel.org/stable/c/5f692c992a3bb9a8018e3488098b401a4229e7ec
- https://git.kernel.org/stable/c/71850b5af92da21b4862a9bc55bda61091247d00
- https://git.kernel.org/stable/c/906a6689bb0191ad2a44131a3377006aa098af59
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.108