UBUNTU-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-2026-89694 nfsd: check client ownership when cancelling a copy-notify stateid

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-2026-89694

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 ...

CVE-2026-89694 nfsd: check client ownership when cancelling a copy-notify stateid

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-2026-89694

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...

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 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-2026-89669 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-2026-89669

CVE-2026-89669 is a use-after-free in the Linux kernel's nfsd (NFS server) component. The copy-notify state ID was published into the s2s_cp_stateids IDR before its cp_p_stateid/cp_p_clid fields were fully initialized. A racing OFFLOAD_CANCEL with a crafted client ID and guessable sequence number...

EUVD-2026-76581

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-2026-89669

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

CVE-2026-89663 is a use-after-free vulnerability in the Linux kernel's nfsd (Network File System Daemon) subsystem, specifically in the revocation of copy-notify stateids. The root cause is that _free_cpntf_state_locked() drops a reference without unlinking the entry when a concurrent holder has ...

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 ...

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 ...

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 ...

PT-2026-90379

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description A use-after-free flaw exists in the nfsd copy-notify stateids. The issue occurs because free cpntf state locked only unlinks an entry when its reference count reaches zero. If a revoke...

PT-2026-96416

In the Linux kernel, the following vulnerability has been resolved: nfsd: add fh want write for early-verified SETATTR in nfsd proc setattr The BOTH TIME SET branch calls fh verify early so setattr prepare can inspect the dentry. This causes nfsd setattr to skip fh want write, so notify change ru...

PT-2026-96598

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 s2s cp stateids IDR and on their parent stid's sc cp list, pinned by a single membership reference. free cpntf state locked only...

CVE-2026-89663: Undefined Security Weakness

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 ...