SB20250916129 - Use-after-free in Linux kernel nfsd
Published: September 16, 2025 Updated: September 22, 2025
Security Bulletin ID
SB20250916129
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-2022-50241)
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_open_stateid(), nfs4_free_ol_stateid() and nfsd4_close_open_stateid() functions in fs/nfsd/nfs4state.c. A local user can escalate privileges on the system.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/019805fea91599b22dfa62ffb29c022f35abeb06
- https://git.kernel.org/stable/c/35aa0fb8c3033a3d78603356e96fc18c5b9cceb2
- https://git.kernel.org/stable/c/6ea71246b7a02af675d733e72d14bd0d591d5f4a
- https://git.kernel.org/stable/c/83b94969751a691347606dbe6b1865efcfa5a643
- https://git.kernel.org/stable/c/bbacfcde5fff25ac22597e8373a065c647da6738
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.150