CVE-2026-89655

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...

UBUNTU-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...

UBUNTU-CVE-2026-89705

In the Linux kernel, the following vulnerability has been resolved: nfsd: restore rqstatuscounter to even on all nfsddispatch exit paths nfsddispatch sets rqstatuscounter to an odd value once a request has been decoded, and back to an even value once it has been fully processed, forming a seq-loc...

CVE-2026-89520

In the Linux kernel, the following vulnerability has been resolved: sched/core: Make core-sched flips wait for in-flight selections Core scheduling's picknexttask operates on all sibling rqs under one acquisition of the shared core-wide lock. A -picktask that releases the rq lock leaves every...

UBUNTU-CVE-2026-89609

In the Linux kernel, the following vulnerability has been resolved: ecryptfs: hold msg ctx list lock when cleaning daemon queue ecryptfsexorcisedaemon drops queued messages from a dying daemon without holding ecryptfsmsgctxlistsmux, but ecryptfsmsgctxalloctofree requires that lock. Take the list...

UBUNTU-CVE-2026-89712

In the Linux kernel, the following vulnerability has been resolved: NFSD: restart sscexpireumount walk after dropping nfsdssclock nfsd4sscexpireumount walks nn-nfsdsscmountlist with listforeachentrysafeni, tmp, .... For each expired entry it sets nsuibusy = true, drops nfsdssclock to run mntput o...

CVE-2026-89521

In the Linux kernel, the following vulnerability has been resolved: sched/core: Handle picktask releasing the rq lock Core scheduling's picknexttask breaks when a -picktask implementation can release the rq lock. The selection state derived on entry is only valid while the lock is held...

UBUNTU-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...

UBUNTU-CVE-2026-80982

In the Linux kernel, the following vulnerability has been resolved: net/smc: fix use-after-free in smcrxpipebufrelease smcrxsplice hands RMB pages to a pipe and takes a socket reference per entry so the smcsock stays alive until the reader finishes. The connection does not: a concurrent close run...

CVE-2026-89712

In the Linux kernel, the following vulnerability has been resolved: NFSD: restart sscexpireumount walk after dropping nfsdssclock nfsd4sscexpireumount walks nn-nfsdsscmountlist with listforeachentrysafeni, tmp, .... For each expired entry it sets nsuibusy = true, drops nfsdssclock to run mntput o...

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...

UBUNTU-CVE-2026-89485

In the Linux kernel, the following vulnerability has been resolved: lockd: pin next file across nlminspectfile lock-drop nlmtraversefiles pins the current file with fcount++ across a mutexunlock for nlminspectfile, but nothing pins the saved next pointer. A concurrent nlmreleasefile can kfree the...

CVE-2026-89609

In the Linux kernel, the following vulnerability has been resolved: ecryptfs: hold msg ctx list lock when cleaning daemon queue ecryptfsexorcisedaemon drops queued messages from a dying daemon without holding ecryptfsmsgctxlistsmux, but ecryptfsmsgctxalloctofree requires that lock. Take the list...

UBUNTU-CVE-2026-89566

In the Linux kernel, the following vulnerability has been resolved: jbd2: check needresched when skipping busy checkpoint buffers journalshrinkonecplist skips busy checkpoint buffers when called with JBD2SHRINKBUSYSKIP. The continue statement on this path also skips the needresched check at the e...

CVE-2026-89501

In the Linux kernel, the following vulnerability has been resolved: ring-buffer: Hold cpubuffer::lock when resizing a subbuf Because, ringbuffersubbuforderset can clear cpubuffer-freepage, hold cpubuffer-lock to prevent races with ringbufferallocreadpage and ringbufferfreereadpage...

CVE-2026-89508

In the Linux kernel, the following vulnerability has been resolved: RDMA/ucma: Lock the handler in ucmasetibpath ucmasetibpath calls ucmaeventhandler straight from the write path, without the handler lock that keeps ctx-file stable while a uevent is queued. The handler re-reads ctx-file for every...

UBUNTU-CVE-2026-89491

In the Linux kernel, the following vulnerability has been resolved: ocfs2: cluster: don't sleep while holding o2hblivelock in o2hbregionpin Patch series "ocfs2: cluster: o2hbregionpin fixes", v2. This series fixes three related issues in o2hbregionpin, all are from the original implementation in...

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...

UBUNTU-CVE-2026-89520

In the Linux kernel, the following vulnerability has been resolved: sched/core: Make core-sched flips wait for in-flight selections Core scheduling's picknexttask operates on all sibling rqs under one acquisition of the shared core-wide lock. A -picktask that releases the rq lock leaves every...

UBUNTU-CVE-2026-81001

In the Linux kernel, the following vulnerability has been resolved: slip: fix use-after-free in slsync slipdevs stores bare netdevice pointers and takes no reference on them. slsync and slalloc walk that table from slipopen under rtnllock, while an entry is dropped by slfreenetdev, which slsetup...