CVE-2024-50043
This vulnerability affects the Linux kernel’s NFS server, allowing an attacker to trigger a use‑after‑free or counter underflow when multiple FREE_STATEID requests are processed. The issue can crash the server or lead to arbitrary code execution. It has been fixed in recent kernel releases.
An official fix is available, so this entry is kept for 30 days and then removed automatically.
Who is affected
Linux kernel, including version 6.12 and earlier, on systems running the NFS server.
Real-world impact
An attacker could crash the NFS server or potentially execute arbitrary code on the host, leading to denial of service or privilege escalation.
Why this severity
The CVSS score of 9.8 reflects the high impact on confidentiality, integrity, and availability, and the fact that the vulnerability can be exploited remotely without authentication or user interaction.
What to do about it
- 01Upgrade your Linux kernel to a version that includes the fix (e.g., 6.12 or later).
- 02Reboot the system to load the new kernel.
NVD description indicates the vulnerability has been resolved.
Timeline
- Oct 21, 2024 · Oct 21, 2024PublishedDisclosed and added to the National Vulnerability Database.
- Aug 4, 2026 · 2d agoAdvisory updatedThe NVD record was last revised.
- Aug 4, 2026 · 1d agoOfficial fix availableA vendor patch or mitigation now exists — see the remediation steps above.