CVE-2026-89694

A flaw was found in the Linux kernel's NFSv4.2 server nfsd. An authenticated NFSv4.2 client could exploit a vulnerability in the managecpntfstate function by guessing a state identifier. This improper ownership check allows the client to cancel and free another client's copy-notify stateid, leadi...

CVE-2026-89663

A flaw was found in the Linux kernel's Network File System Daemon nfsd. This vulnerability arises from improper handling of "copy-notify stateids" during their revocation. When a stateid's reference is dropped without unlinking it, the memory can be freed while still in use by a reader, leading t...

CVE-2026-89694

In the Linux kernel, the following vulnerability has been resolved: nfsd: check client ownership when cancelling a copy-notify stateid On the OFFLOADCANCEL path clp != NULL, managecpntfstate freed the target cpntf state without checking ownership. The lookup key st-siopaque.soid is allocated...

CVE-2026-89669

In the Linux kernel, the following vulnerability has been resolved: nfsd: initialize copy-notify stateid before publishing it nfsd4copynotify finished initializing the cpntf state after nfs4allocinitcpntfstate had already linked it into the s2scpstateids IDR and the parent's sccplist, with cscoun...

CVE-2026-89663

In the Linux kernel, the following vulnerability has been resolved: nfsd: revoke copy-notify stateids before dropping their reference Copy-notify stateids live in the s2scpstateids IDR and on their parent stid's sccplist, pinned by a single membership reference. freecpntfstatelocked only unlinks ...

CVE-2026-89694

CVE-2026-89694 affects the Linux kernel NFS server (nfsd) on the OFFLOAD_CANCEL path. The function manage_cpntf_state() freed a target copy-notify state without verifying ownership. Because the lookup key (st->si_opaque.so_id) is allocated cyclically (guessable) and the embedded clientid is a ...

EUVD-2026-76606

In the Linux kernel, the following vulnerability has been resolved: nfsd: check client ownership when cancelling a copy-notify stateid On the OFFLOADCANCEL path clp != NULL, managecpntfstate freed the target cpntf state without checking ownership. The lookup key st-siopaque.soid is allocated...

CVE-2026-89669

This Linux kernel vulnerability affects the nfsd (NFS server) component. A race condition in nfsd4_copy_notify() allowed the copy-notify (cpntf) state to be published into the s2s_cp_stateids IDR and the parent's sc_cp_list before cp_p_stateid and cp_p_clid were fully initialized. A racing OFFLOA...

CVE-2026-89669 nfsd: initialize copy-notify stateid before publishing it

In the Linux kernel, the following vulnerability has been resolved: nfsd: initialize copy-notify stateid before publishing it nfsd4copynotify finished initializing the cpntf state after nfs4allocinitcpntfstate had already linked it into the s2scpstateids IDR and the parent's sccplist, with cscoun...

CVE-2026-89663 nfsd: revoke copy-notify stateids before dropping their reference

In the Linux kernel, the following vulnerability has been resolved: nfsd: revoke copy-notify stateids before dropping their reference Copy-notify stateids live in the s2scpstateids IDR and on their parent stid's sccplist, pinned by a single membership reference. freecpntfstatelocked only unlinks ...

EUVD-2026-76575

In the Linux kernel, the following vulnerability has been resolved: nfsd: revoke copy-notify stateids before dropping their reference Copy-notify stateids live in the s2scpstateids IDR and on their parent stid's sccplist, pinned by a single membership reference. freecpntfstatelocked only unlinks ...

PT-2026-90385

In the Linux kernel, the following vulnerability has been resolved: nfsd: initialize copy-notify stateid before publishing it nfsd4 copy notify finished initializing the cpntf state after nfs4 alloc init cpntf state had already linked it into the s2s cp stateids IDR and the parent's sc cp list,...

EUVD-2025-201582

In the Linux kernel, the following vulnerability has been resolved: NFSD: free copynotify stateid in nfs4freeolstateid Typically copynotify stateid is freed either when parent's stateid is being close/freed or in nfsd4laundromat if the stateid hasn't been used in a lease period. However, in case...

DEBIAN-CVE-2025-40273

In the Linux kernel, the following vulnerability has been resolved: NFSD: free copynotify stateid in nfs4freeolstateid Typically copynotify stateid is freed either when parent's stateid is being close/freed or in nfsd4laundromat if the stateid hasn't been used in a lease period. However, in case...