SB2025062006 - Use-after-free in Linux kernel fs
Published: June 20, 2025 Updated: June 21, 2025
Security Bulletin ID
SB2025062006
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-2022-50095)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error within the begin_new_exec() function in fs/exec.c. A local user can escalate privileges on the system.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/541840859ace9c2ccebc32fa9e376c7bd3def490
- https://git.kernel.org/stable/c/9e255ed238fc67058df87b0388ad6d4b2ef3a2bd
- https://git.kernel.org/stable/c/b2fc1723eb65abb83e00d5f011de670296af0b28
- https://git.kernel.org/stable/c/e362359ace6f87c201531872486ff295df306d13
- https://git.kernel.org/stable/c/e8cb6e8fd9890780f1bfcf5592889e1b879e779c
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.18.18