SB2025120872 - Use-after-free in Linux kernel mm
Published: December 8, 2025
Security Bulletin ID
SB2025120872
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-2025-40272)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error within the secretmem_fault() function in mm/secretmem.c. A local user can escalate privileges on the system.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/1e4643d6628edf9c0047b1f8f5bc574665025acb
- https://git.kernel.org/stable/c/42d486d35a4143cc37fc72ee66edc99d942dd367
- https://git.kernel.org/stable/c/4444767e625da46009fc94a453fd1967b80ba047
- https://git.kernel.org/stable/c/52f2d5cf33de9a8f5e72bbb0ed38282ae0bc4649
- https://git.kernel.org/stable/c/6f86d0534fddfbd08687fa0f01479d4226bc3c3d
- https://git.kernel.org/stable/c/bb1c19636aedae39360e6fdbcaef4f2bcff25785