UBUNTU-CVE-2026-89544

In the Linux kernel, the following vulnerability has been resolved: SUNRPC: fix gssxdecoptionarray error path bugs Four coupled defects in the gssx XDR option-array decoder make the error paths unsafe: a NULL deref in the caller, a refcount leak on the decoded groupinfo, and a latent use-after-fr...

UBUNTU-CVE-2026-89675

In the Linux kernel, the following vulnerability has been resolved: nfsd: fix UAF in async copy cancel and shutdown An async copy could be freed or used after free while a teardown caller OFFLOADCANCEL, nfsd4shutdowncopy, nfsd4cancelcopybysb raced the copy kthread: - findasynccopy bumped...

UBUNTU-CVE-2026-80984

In the Linux kernel, the following vulnerability has been resolved: net/smc: do not dereference an unset send buffer on the SMC-D teardown path smcclosestreamwait calls smctxpreparedsends from inside its skwaitevent condition, and skwaitevent evaluates that condition once with the socket lock...

UBUNTU-CVE-2026-80962

In the Linux kernel, the following vulnerability has been resolved: dm-pcache: validate geometry fields from on-disk cacheinfo cachesegsinit iterates cacheinfo-nsegs times indexing cache-segments, which is sized to the cache device geometry, and getsegid takes each segment id from the on-media...

UBUNTU-CVE-2026-89498

In the Linux kernel, the following vulnerability has been resolved: orangefs: fix double-free of trailerbuf on readdir copy failure On a readdir downcall, orangefsdevreqwriteiter frees op-downcall.trailerbuf with vfree when copyfromiterfull fails, but does not clear the pointer before goto Efault...

UBUNTU-CVE-2026-89684

In the Linux kernel, the following vulnerability has been resolved: nfsd: fix cpntf publish race in nfs4initcpstate nfs4allocinitcpntfstate published the new cpntf entry into the s2scpstateids IDR with cstype set in one s2scplock section, then took the lock again to listadd it onto pstid-sccplist...

UBUNTU-CVE-2026-89671

In the Linux kernel, the following vulnerability has been resolved: nfsd: gate nfs3 setacl by argp-mask nfsd3procsetacl calls setposixacl unconditionally for both ACLTYPEACCESS and ACLTYPEDEFAULT, passing argp-aclaccess and argp-acldefault verbatim. The NFSv3 ACL decoder only populates those...

UBUNTU-CVE-2026-80975

In the Linux kernel, the following vulnerability has been resolved: mfd: qnap-mcu: keep the reply buffer alive past a command timeout qnapmcuexec publishes an on-stack buffer to the receive path: unsigned char rxQNAPMCURXBUFFERSIZE; ... reply-data = rx; reply-length = length; and qnapmcureceivebu...

CVE-2026-80984

In the Linux kernel, the following vulnerability has been resolved: net/smc: do not dereference an unset send buffer on the SMC-D teardown path smcclosestreamwait calls smctxpreparedsends from inside its skwaitevent condition, and skwaitevent evaluates that condition once with the socket lock...

CVE-2026-80993

In the Linux kernel, the following vulnerability has been resolved: net: phylink: correctly validate returned PCS in phylinkinbandcaps In phylinkinbandcaps, the PCS returned by macselectpcs is only checked if NULL but macselectpcs can also return an error pointer. This can cause a kernel panic as...

CVE-2026-89505

In the Linux kernel, the following vulnerability has been resolved: RDMA/uverbs: Guard legacy bundles without methodelm The legacy write path dispatches through a uverbsapiwritemethod, but the uverbsattrbundle passed to provider code does not have an ioctl method element. If malformed provider...

CVE-2026-89665

In the Linux kernel, the following vulnerability has been resolved: nfsd: reject out-of-range useconds in NFSv2 SETATTR/CREATE The NFSv2 sattr decoder converts the wire useconds to nanoseconds in svcxdrdecodesattr: iap-iaatime.tvnsec = tmp2 NSECPERUSEC; tmp2 is a u32 and NSECPERUSEC is 1000, so t...

CVE-2026-89567

In the Linux kernel, the following vulnerability has been resolved: jbd2: bound shrinker scans by examined checkpoint buffers The jbd2 shrinker currently accounts only checkpoint buffers that it successfully releases against nrtoscan. Busy buffers therefore do not consume the scan budget. If a...

CVE-2026-89608

In the Linux kernel, the following vulnerability has been resolved: ecryptfs: pass packet set buffer size to parser ecryptfsparsepacketset receives a pointer into the file header, but it calculates the remaining packet buffer size from PAGESIZE - 8. For version 1 headers the packet set starts lat...

CVE-2026-89563

In the Linux kernel, the following vulnerability has been resolved: ip6tunnel: use skbcowhead in ip6tnlxmit ip6tnlxmit may need to expand headroom before it can push the outer IPv6 and optional encap headers. It currently does that with skbreallocheadroom, copies skb-sk ownership, consumes the...

CVE-2026-89583

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: eir: Fix OOB read in eirgetservicedata eirgetservicedata walks the advertising data for a Service Data field with a matching UUID. On a mismatch it advances: eir += dlen; eirlen -= dlen; eirgetdata reports dlen as the...

CVE-2026-89574

In the Linux kernel, the following vulnerability has been resolved: dm array: validate array block headers on read arrayblockcheck validates blocknr and csum and nothing else, while nodecheck, next to it, has bounded the structural fields since both were written. dmarraycursornext takes its loop...

CVE-2026-89489

In the Linux kernel, the following vulnerability has been resolved: openrisc: fix arbitrary kernel memory access via or1katomic syscall sysor1katomic syscall 244 in the "or1k" ABI takes two user pointers, v1 and v2, and swaps the words they point to in hand-written assembly. l.lwz r29,0r4 l.lwz...

CVE-2026-89477

In the Linux kernel, the following vulnerability has been resolved: sctp: fix NULL deref on untransmitted RECONF completion sctpprocessstrresetoutreq, sctpprocessstrresetaddstrmout and sctpprocessstrresetresp complete a pending stream reconfiguration request by stopping the reconf timer on the...

CVE-2026-89484

In the Linux kernel, the following vulnerability has been resolved: lockd: fix NULL dereference on lockowner allocation failure nlmclntlocksinitprivate installs NLM file lock operations even when nlmclntfindlockowner fails to allocate a lockowner. nlmclntproc then returns -ENOMEM, but the VFS sti...