SB2025100470 - Use-after-free in Linux kernel ipv4
Published: October 4, 2025 Updated: October 27, 2025
Security Bulletin ID
SB2025100470
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-2023-53559)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error within the vti_tunnel_xmit() function in net/ipv4/ip_vti.c. A local user can escalate privileges on the system.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/0b4d69539fdea138af2befe08893850c89248068
- https://git.kernel.org/stable/c/2b05bf5dc437f7891dd409a3eaf5058459391c7a
- https://git.kernel.org/stable/c/6018a266279b1a75143c7c0804dd08a5fc4c3e0b
- https://git.kernel.org/stable/c/78e397a43e1c47321a4679cc49a6c4530bf820b9
- https://git.kernel.org/stable/c/7dfe23659f3677c08a60a0056cda2d91a79c15ca
- https://git.kernel.org/stable/c/82fb41c5de243e7dfa90f32ca58e35adaff56c1d
- https://git.kernel.org/stable/c/d34c30442d5e53a33cde79ca163320dbe2432cbd
- https://git.kernel.org/stable/c/e1e04cc2ef2c0c0866c19f5627149a76c2baae32
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.128