SB2025022747 - Use-after-free in Linux kernel ipv4
Published: February 27, 2025 Updated: May 11, 2025
Security Bulletin ID
SB2025022747
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-2025-21762)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error within the arp_xmit_finish() function in net/ipv4/arp.c. A local user can escalate privileges on the system.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/01d1b5c9abcaff29a43f1d17a19c33eec92c7dbe
- https://git.kernel.org/stable/c/2c331718d3389b6c5f6855078ab7171849e016bd
- https://git.kernel.org/stable/c/a42b69f692165ec39db42d595f4f65a4c8f42e44
- https://git.kernel.org/stable/c/e9f4dee534eb1b225b0a120395ad9bc2afe164d3
- https://git.kernel.org/stable/c/f189654459423d4d48bef2d120b4bfba559e6039
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.1.129