UBUNTU-CVE-2026-89536

In the Linux kernel, the following vulnerability has been resolved: SUNRPC: wait for in-flight client TLS handshake callback xstlshandshakesync gives xstlshandshakedone a reference to the lower transport before submitting the handshake request. On timeout or signal, the synchronous waiter drops...

UBUNTU-CVE-2026-89704

In the Linux kernel, the following vulnerability has been resolved: nfsd: sample writeback error cursor before async COPY loop nfsdcopyfilerange samples dst-fwberr into "since" after the copy loop, then uses it to detect writeback errors via filemapcheckwberr once vfsfsyncrange returns. Because t...

UBUNTU-CVE-2026-89451

In the Linux kernel, the following vulnerability has been resolved: iommu/sva: Set handle-dev before the SVA handle is visible iommuattachdevicepasid installs the new SVA attach handle in the group PASID lookup before iommusvabinddevice returns. A concurrent bind can therefore find and reuse the...

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-2026-89517

In the Linux kernel, the following vulnerability has been resolved: schedext: Fix rq-corepick corruption under core scheduling Core scheduling's picknexttask picks what to run on every SMT sibling of the core in a single pass under the shared core-wide rq lock. The selection state is consistent...

UBUNTU-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...

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-2026-89553

In the Linux kernel, the following vulnerability has been resolved: nouveau/gem: reserve the bo in the info ioctl around the vma lookup In the non-uvmm path, there could be a race between the info lookup finding the vma, and the gem close path closing the vma leading to a use-after-free. Spotted...

CVE-2026-89595

In the Linux kernel, the following vulnerability has been resolved: fsnotify: Fix stale object mask after concurrent mark updates When a mark gets a new event bit, fanotify and inotify may avoid recalculating the object mask if the cached aggregate already contains that bit. This is racy with a...

UBUNTU-CVE-2026-89599

In the Linux kernel, the following vulnerability has been resolved: fbdev: omapfb: panel-dsi-cm: initialize lock before registering display dsicmprobe registers the display before initializing ddata-lock. Once omapdssregisterdisplay publishes the display, another consumer can reach a dsicm callba...

UBUNTU-CVE-2026-80967

In the Linux kernel, the following vulnerability has been resolved: ALSA: pcxhr: initialize mutexes before requesting threaded IRQ pcxhrprobe requests pcxhrthreadedirq before initializing mgr-lock, even though the threaded handler takes that mutex. Initialize the manager locks before...

CVE-2026-89715

In the Linux kernel, the following vulnerability has been resolved: NFS/localio: fix ref leak on nfsuuidaddfile failure When nfsuuidaddfile races with nfsuuidput tearing down uuid-net, it returns -ENXIO without publishing nfl-nfsuuid via rcuassignpointer. nfsopenlocalfh then enters its error bran...

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...

UBUNTU-CVE-2026-80991

In the Linux kernel, the following vulnerability has been resolved: net: ravb: serialize PTP clock teardown ravbptpinterrupt can race with ravbptpstop and pass the clock to ptpclockevent while ptpclockunregister is freeing it. This can lead to a use-after-free. Use READONCE and WRITEONCE for...

UBUNTU-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...

UBUNTU-CVE-2026-89507

In the Linux kernel, the following vulnerability has been resolved: RDMA/ucma: Lock the handler in ucmawritecmevent ctx-file may only be changed under the handler lock and the xalock, which is what stops uevents being queued for a ctx while ucmamigrateid moves it to another file. The CM core take...

CVE-2026-89599

In the Linux kernel, the following vulnerability has been resolved: fbdev: omapfb: panel-dsi-cm: initialize lock before registering display dsicmprobe registers the display before initializing ddata-lock. Once omapdssregisterdisplay publishes the display, another consumer can reach a dsicm callba...

UBUNTU-CVE-2026-89654

In the Linux kernel, the following vulnerability has been resolved: ceph: fix UAF in checknewmap on session freed during unlock checknewmap iterates mdsc-sessions and for each active session drops mdsc-mutex to perform per-session operations. The forced-close path rank removed from map correctly...

UBUNTU-CVE-2026-89519

In the Linux kernel, the following vulnerability has been resolved: schedext: Replace SCXRQBALKEEP with a dispatch verdict return SCXRQBALKEEP tells the pick to keep running the previous task, a leftover from when balancing and picking were separate operations. An rq-level flag only works while...

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...