SB20250619191 - Use-after-free in Linux kernel nfs
Published: June 19, 2025
Security Bulletin ID
SB20250619191
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-2025-38023)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error within the nfs4_alloc_unlockdata() function in fs/nfs/nfs4proc.c. A local user can escalate privileges on the system.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/4c189fd40a09a03f9a900bedb2d9064f1734d72a
- https://git.kernel.org/stable/c/72f552e00c50f265896d3c19edc6696aa2910081
- https://git.kernel.org/stable/c/85fb7f8ca5f8c138579fdfc9b97b3083e6077d40
- https://git.kernel.org/stable/c/a6879a076b98c99c9fe747816fe1c29543442441
- https://git.kernel.org/stable/c/c457dc1ec770a22636b473ce5d35614adfe97636
- https://git.kernel.org/stable/c/da824f1271633bcb515ca8084cda3eda4b3ace51
- https://git.kernel.org/stable/c/db6f5ee1fc8f54d079d0751292c2fc2d78e3aad1
- https://git.kernel.org/stable/c/f601960af04d2ecb007c928ba153d34051acd9c1