SB2025092363 - Use-after-free in Linux kernel damon
Published: September 23, 2025
Security Bulletin ID
SB2025092363
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-2025-39877)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error within the state_show() function in mm/damon/sysfs.c. A local user can escalate privileges on the system.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/26d29b2ac87a2989071755f9828ebf839b560d4c
- https://git.kernel.org/stable/c/3260a3f0828e06f5f13fac69fb1999a6d60d9cff
- https://git.kernel.org/stable/c/3858c44341ad49dc7544b19cc9f9ecffaa7cc50e
- https://git.kernel.org/stable/c/4e87f461d61959647464a94d11ae15c011be58ce
- https://git.kernel.org/stable/c/60d7a3d2b985a395318faa1d88da6915fad11c19