UBUNTU-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-2026-89660

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...

UBUNTU-CVE-2026-89632

In the Linux kernel, the following vulnerability has been resolved: smb: client: fix use-before-check of ReparseDataLength in reparsebufptr reparsebufptr reads buf-ReparseDataLength before checking that count covers the full fixed header: buf = struct reparsedatabuffer u8 io + off; len = sizeofbu...

UBUNTU-CVE-2026-89630

In the Linux kernel, the following vulnerability has been resolved: smb: client: restore the dataoffset bound in isvalidoplockbreak Commit 83bfbd0bb902 "cifs: Remove the RFC1002 header from smbhdr" changed the quantity this bound is measured against. It used to be srv-totalread minus the 4-byte...

UBUNTU-CVE-2026-89631

In the Linux kernel, the following vulnerability has been resolved: smb: client: reject a tree connect response whose byte count is too small CIFSTCon bounds its strnlen over the byte area with the server's ByteCount minus two, which for ByteCount 0 or 1 goes negative as an int and converts to a...

CVE-2026-89707

In the Linux kernel, the following vulnerability has been resolved: nfsd: release path refs on followdown error nfsdcrossmnt initializes a local struct path with mntget and dget before calling followdown. On a negative return the error arm jumps to out without releasing those references: err =...

CVE-2026-89696

In the Linux kernel, the following vulnerability has been resolved: nfsd: block non-SAVEFH ops after FOREIGN PUTFH to prevent NULL deref When CONFIGNFSDV42INTERSSC is enabled, nfsd4putfh can return success with fhdentry and fhexport both NULL if fhverify returns nfserrstale and putfh-noverify is...

CVE-2026-89650

In the Linux kernel, the following vulnerability has been resolved: ceph: bound numexporttargets array for mds info v2/v3 cephmdsmapdecode in fs/ceph/mdsmap.c reads numexporttargets from each per-mds info record and advances the decode cursor by numexporttargets sizeofu32 without first checking...

CVE-2026-89634

In the Linux kernel, the following vulnerability has been resolved: smb: client: fix ALIGN overflow in symlinkdata error context loop The check added by commit 7d9a7f1f96cd "smb/client: fix possible infinite loop and oob read in symlinkdata" compared the post-ALIGN length against the remaining...

CVE-2026-89497

In the Linux kernel, the following vulnerability has been resolved: orangefs: skip leading spaces before parsing client debug masks orangefspreparecdmarray sizes each client debug keyword buffer with strcspncdshead, " ", but then parses the keyword with %s. The %s conversion skips leading...

CVE-2026-89662

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...

CVE-2026-89636

In the Linux kernel, the following vulnerability has been resolved: smb: client: clear ce-tgthint in freetgts When freetgts frees all structures in ce-tlist, ce-tgthint is left pointing to one of the freed cachedfstgt structures. If ce-tgthint is not reset before it is used later, it results in a...

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...

DEBIAN-CVE-2026-80926

In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix use-after-free in oplock break notification smb2oplockbreaknoti reads opinfo-conn without any lock and dereferences it after two allocations which may sleep. When the durable handle owning the oplock is disconnected,...

CVE-2026-89714

This Linux kernel vulnerability affects the NFSv4 client subsystem. The root cause is a memory leak of server->delegation_hash_table (4 KiB per attempt with the default delegation watermark) when nfs4_server_common_setup() fails at an intermediate step (is_ds_only_client(), nfs4_init_session()...

CVE-2026-89714 NFS: fix delegation_hash_table leak when nfs4_server_common_setup() fails

In the Linux kernel, the following vulnerability has been resolved: NFS: fix delegationhashtable leak when nfs4servercommonsetup fails nfs4servercommonsetup allocates server-delegationhashtable first, but server-destroy - the only path that frees the table via nfs4destroyserver - is not assigned...

EUVD-2026-76626

In the Linux kernel, the following vulnerability has been resolved: NFS: fix delegationhashtable leak when nfs4servercommonsetup fails nfs4servercommonsetup allocates server-delegationhashtable first, but server-destroy - the only path that frees the table via nfs4destroyserver - is not assigned...

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-2026-89686

CVE-2026-89686 is a race condition in the Linux kernel's nfsd (NFSv4 daemon). The function nfsd4_alloc_layout_stateid reads fp->fi_deleg_file without holding fi_lock when the parent stateid is a delegation. A concurrent delegation revoke via the laundromat can clear that field, causing nfsd_fi...

EUVD-2026-76598

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...