CVE-2024-50043 nfsd: fix possible badness in FREE_STATEID

In the Linux kernel, the following vulnerability has been resolved: nfsd: fix possible badness in FREESTATEID When multiple FREESTATEIDs are sent for the same delegation stateid, it can lead to a possible either use-after-free or counter refcount underflow errors. In nfsd4freestateid under the...

CVE-2024-50043

CVE-2024-50043 – Linux kernel NFS daemon state-id handling Affected: Linux kernel (nfsd/nfsd4).Cause: In nfsd4_free_stateid(), under the client lock, a delegation stateid is located, but the code drops the lock before calling nfs4_put_stid(). This allows another FREE_STATE to locate the stateid a...