CVE-2026-89660

In the Linux kernel, the following vulnerability has been resolved: NFSD: Prevent client use-after-free during admin state revocation A stateid holds only a bare pointer to its nfs4client; a stateid reference does not pin it. The client survives only because destroyclient drains its stateids befo...

EUVD-2026-76572

In the Linux kernel, the following vulnerability has been resolved: NFSD: Prevent client use-after-free during admin state revocation A stateid holds only a bare pointer to its nfs4client; a stateid reference does not pin it. The client survives only because destroyclient drains its stateids befo...

CVE-2026-89660 NFSD: Prevent client use-after-free during admin state revocation

In the Linux kernel, the following vulnerability has been resolved: NFSD: Prevent client use-after-free during admin state revocation A stateid holds only a bare pointer to its nfs4client; a stateid reference does not pin it. The client survives only because destroyclient drains its stateids befo...

CVE-2026-89660

CVE-2026-89660 is a use-after-free in the Linux kernel's NFSD (Network File System Daemon) subsystem, rated CVSS 9.8 (Critical) . The flaw arises in nfsd4_revoke_states(), which drops client_lock while dereferencing a client to revoke a stateid. A concurrent teardown can free the nfs4_client befo...

CVE-2026-89659

In the Linux kernel, the following vulnerability has been resolved: NFSD: Prevent client use-after-free during delegation revoke A delegation stateid holds only a bare pointer to its owning nfs4client and does not keep it alive. The client survives its stateids only because destroyclient drains...

EUVD-2026-76571

In the Linux kernel, the following vulnerability has been resolved: NFSD: Prevent client use-after-free during delegation revoke A delegation stateid holds only a bare pointer to its owning nfs4client and does not keep it alive. The client survives its stateids only because destroyclient drains...

CVE-2026-89659 NFSD: Prevent client use-after-free during delegation revoke

In the Linux kernel, the following vulnerability has been resolved: NFSD: Prevent client use-after-free during delegation revoke A delegation stateid holds only a bare pointer to its owning nfs4client and does not keep it alive. The client survives its stateids only because destroyclient drains...

CVE-2026-89659 NFSD: Prevent client use-after-free during delegation revoke

In the Linux kernel, the following vulnerability has been resolved: NFSD: Prevent client use-after-free during delegation revoke A delegation stateid holds only a bare pointer to its owning nfs4client and does not keep it alive. The client survives its stateids only because destroyclient drains...

CVE-2026-89659

A use-after-free in the Linux kernel's NFSD (NFSv4 daemon) occurs during delegation revocation. The nfs4_laundromat() function unhashes an expired delegation from cl_delegations and drops the lock, creating a window where client_has_state() reports no remaining state, allowing free_client() to ru...

CVE-2026-89658

In the Linux kernel, the following vulnerability has been resolved: NFSD: Prevent client use-after-free during NFSv4.0 revoked-state cleanup nfs40cleanadminrevoked takes a stateid reference under clp-cllock, drops nn-clientlock, and calls nfsd4droprevokedstid, which dereferences the stateid's...

CVE-2026-89658 NFSD: Prevent client use-after-free during NFSv4.0 revoked-state cleanup

In the Linux kernel, the following vulnerability has been resolved: NFSD: Prevent client use-after-free during NFSv4.0 revoked-state cleanup nfs40cleanadminrevoked takes a stateid reference under clp-cllock, drops nn-clientlock, and calls nfsd4droprevokedstid, which dereferences the stateid's...

EUVD-2026-76570

In the Linux kernel, the following vulnerability has been resolved: NFSD: Prevent client use-after-free during NFSv4.0 revoked-state cleanup nfs40cleanadminrevoked takes a stateid reference under clp-cllock, drops nn-clientlock, and calls nfsd4droprevokedstid, which dereferences the stateid's...

CVE-2026-89658

CVE-2026-89658 is a use-after-free vulnerability in the Linux kernel's NFSD (Network File System Daemon) during NFSv4.0 revoked-state cleanup . The function nfs40_clean_admin_revoked() drops nn->client_lock and then calls nfsd4_drop_revoked_stid(), which dereferences the client via s->sc_cl...

CVE-2026-89658 NFSD: Prevent client use-after-free during NFSv4.0 revoked-state cleanup

In the Linux kernel, the following vulnerability has been resolved: NFSD: Prevent client use-after-free during NFSv4.0 revoked-state cleanup nfs40cleanadminrevoked takes a stateid reference under clp-cllock, drops nn-clientlock, and calls nfsd4droprevokedstid, which dereferences the stateid's...

CVE-2026-89662: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: NFSD: Prevent lock owner use-after-free during client teardown destroyclient releases a client's open owners, but a lock owner whose only reference is a blocked lock nbl stays on clownerstrhashtbl. clienthasstate does not count a...

PT-2026-90378

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description A use-after-free flaw exists in the NFSD client teardown process. The destroy client function releases a client's open owners, but a lock owner whose only reference is a blocked lock...

PT-2026-96432

In the Linux kernel, the following vulnerability has been resolved: NFSD: Prevent lock owner use-after-free during client teardown destroy client releases a client's open owners, but a lock owner whose only reference is a blocked lock nbl stays on cl ownerstr hashtbl. client has state does not...

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-2026-90421

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description An issue exists in the nfsd dispatch function where the rq status counter is not consistently restored to an even value on all exit paths. Specifically, cache-hit RC REPLY, drop RC DROPI...

CVE-2026-89686: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: nfsd: fix BUGON in nfsd4alloclayoutstateid on racing delegation revoke nfsd4alloclayoutstateid reads fp-fidelegfile without holding filock when the parent stateid is a delegation. A concurrent delegation revoke via the laundromat...