CVE-2026-74730
CriticalCVSS 9.8Exploitation Probability (EPSS)
Low risk9th percentile - higher than 9% of all known CVEs
Summary
In the Linux kernel, in NFS, the FREE_STATEID operation could be delayed, leading to a use-after-free of the 'struct nfs_server' object. The fix bumps the refcount of this object for the duration of the FREE_STATEID call to prevent cleanup while operations are in flight.
Risk Assessment
Risk of system crash or data corruption in systems using NFS, especially under network delays.
Recommendation
Install a kernel patch that pins the 'struct nfs_server' during the FREE_STATEID call.
Original NVD description (English source)
In the Linux kernel, the following vulnerability has been resolved: NFS: Pin the 'struct nfs_server' during a FREE_STATEID call Dan Aloni reports that he was able to hit a use-after-free bug if a FREE_STATEID operation gets delayed for whatever reason. Fix this by bumping the refcount of the 'struct nfs_server' object for the duration of the FREE_STATEID so it doesn't get cleaned up from underneath us while operations are still in flight.