SB2025102885 - Use-after-free in Linux kernel pps driver
Published: October 28, 2025
Security Bulletin ID
SB2025102885
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-2025-40070)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error within the pps_register_cdev() function in drivers/pps/pps.c. A local user can escalate privileges on the system.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/0f97564a1fb62f34b3b498e2f12caffbe99c004a
- https://git.kernel.org/stable/c/125527db41805693208ee1aacd7f3ffe6a3a489c
- https://git.kernel.org/stable/c/4cbd7450a22c5ee4842fc4175ad06c0c82ea53a8
- https://git.kernel.org/stable/c/b0531cdba5029f897da5156815e3bdafe1e9b88d
- https://git.kernel.org/stable/c/cf71834a0cfc394c72d62fd6dbb470ee13cf8f5e
- https://git.kernel.org/stable/c/f01fa3588e0b3cb1540f56d2c6bd99e5b3810234