SB20251226119 - Use-after-free in Linux kernel net driver
Published: December 26, 2025 Updated: December 31, 2025
Security Bulletin ID
SB20251226119
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-2023-54142)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error within the __gtp_encap_destroy() function in drivers/net/gtp.c. A local user can escalate privileges on the system.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/17d6b6354f0025b7c10a56da783fd0cbb3819c5d
- https://git.kernel.org/stable/c/58fa341327fdb4bdf92597fd8796a9abc8d20ea3
- https://git.kernel.org/stable/c/9c9662e2512b5e4ee7b03108802c5222e0fa77a4
- https://git.kernel.org/stable/c/bccc7ace12e69dee4684a3bb4b69737972e570d6
- https://git.kernel.org/stable/c/ce3aee7114c575fab32a5e9e939d4bbb3dcca79f
- https://git.kernel.org/stable/c/d38039697184aacff1cf576e14ef583112fdefef
- https://git.kernel.org/stable/c/dae6095bdb24f537b4798ffd9201515b97bac94e
- https://git.kernel.org/stable/c/e5aa6d829831a55a693dbaeb58f8d22ba7f2b3e6
- https://git.kernel.org/stable/c/ebd6d2077a083329110695a996c00e8ca94bc640
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.121