SB2025012018 - Use-after-free in Linux kernel core
Published: January 20, 2025 Updated: May 11, 2025
Security Bulletin ID
SB2025012018
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-2025-21652)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error within the default_operstate() function in net/core/link_watch.c. A local user can escalate privileges on the system.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/52a24538d569f48e79d1a169a5d359d384152950
- https://git.kernel.org/stable/c/ba9f7c16ec879c83bb4f80406773a911aace8267
- https://git.kernel.org/stable/c/cb358ff94154774d031159b018adf45e17673941
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.12.10
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.13
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.6.72