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

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...

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-2026-89657 libceph: validate OSD extent maps before cursor advance

In the Linux kernel, the following vulnerability has been resolved: libceph: validate OSD extent maps before cursor advance net/ceph/osdclient.c:osdsparseread validates that the sparse-read data length matches the summed extent lengths, but it does not validate that each OSD-supplied extent is...

CVE-2026-89657

CVE-2026-89657 affects the Linux kernel libceph subsystem, specifically osd_sparse_read() in net/ceph/osd_client.c . The function validates that sparse-read data length matches summed extent lengths but fails to verify each OSD-supplied extent is monotonic and within the original request range. A...

EUVD-2026-76569

In the Linux kernel, the following vulnerability has been resolved: libceph: validate OSD extent maps before cursor advance net/ceph/osdclient.c:osdsparseread validates that the sparse-read data length matches the summed extent lengths, but it does not validate that each OSD-supplied extent is...

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-2026-89657

In the Linux kernel, the following vulnerability has been resolved: libceph: validate OSD extent maps before cursor advance net/ceph/osdclient.c:osdsparseread validates that the sparse-read data length matches the summed extent lengths, but it does not validate that each OSD-supplied extent is...

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-2026-89658

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...

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-2026-89657 libceph: validate OSD extent maps before cursor advance

In the Linux kernel, the following vulnerability has been resolved: libceph: validate OSD extent maps before cursor advance net/ceph/osdclient.c:osdsparseread validates that the sparse-read data length matches the summed extent lengths, but it does not validate that each OSD-supplied extent is...

CVE-2026-89656 libceph: reject buckets with mismatched CRUSH ids

In the Linux kernel, the following vulnerability has been resolved: libceph: reject buckets with mismatched CRUSH ids crushdecode stores bucket data by array slot, and the mapper later derives the per-bucket workspace index from the decoded bucket id. A malformed map can therefore make one bucket...

CVE-2026-89656

CVE-2026-89656 is an out-of-bounds write in the libceph subsystem of the Linux kernel . The crush_decode() function stores bucket data by array slot, but a malformed CRUSH map can cause one bucket to alias another's workspace by encoding a mismatched id. When a larger source bucket's permutation ...

CVE-2026-89656

In the Linux kernel, the following vulnerability has been resolved: libceph: reject buckets with mismatched CRUSH ids crushdecode stores bucket data by array slot, and the mapper later derives the per-bucket workspace index from the decoded bucket id. A malformed map can therefore make one bucket...

EUVD-2026-76568

In the Linux kernel, the following vulnerability has been resolved: libceph: reject buckets with mismatched CRUSH ids crushdecode stores bucket data by array slot, and the mapper later derives the per-bucket workspace index from the decoded bucket id. A malformed map can therefore make one bucket...

CVE-2026-89656 libceph: reject buckets with mismatched CRUSH ids

In the Linux kernel, the following vulnerability has been resolved: libceph: reject buckets with mismatched CRUSH ids crushdecode stores bucket data by array slot, and the mapper later derives the per-bucket workspace index from the decoded bucket id. A malformed map can therefore make one bucket...

CVE-2026-89655 ceph: fix UAF in __kick_flushing_caps() on cf entry freed during unlock

In the Linux kernel, the following vulnerability has been resolved: ceph: fix UAF in kickflushingcaps on cf entry freed during unlock listforeachentry iterates ci-icapflushlist but drops icephlock to send cap messages. During the unlock window, handlecapflushack can acquire icephlock, detach cf...