UBUNTU-CVE-2026-89506

In the Linux kernel, the following vulnerability has been resolved: RDMA/uverbs: Add UVERBSATTRUHW to UVERBSMETHODREGMR The original commit missed that three drivers mthca, irdma, siw have UHW data associated with regmr that cannot be passed through the ioctl. They also assume that the udata cann...

CVE-2026-89518

In the Linux kernel, the following vulnerability has been resolved: schedext: Fix thisrq assumptions in dispatch kfuncs Under core scheduling, dispatch runs from within the core-wide pick and can target a sibling rq, so ops.dispatch may execute on a CPU different from the dispatched rq's. Several...

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...

CVE-2026-89460

In the Linux kernel, the following vulnerability has been resolved: s390/cpumcf: Handle CPU hotplug via prepare/dead callbacks The command 'perf stat -e cycles -- ' crashes the kernel when CPUs are hotplug added during that run. Root cause is the allocation of struct cpucfevents at first event...

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-2026-89717

In the Linux kernel, the following vulnerability has been resolved: zram: set default primary compressor in zramdestroycomps Patch series "zram: fix zram issues reported by sashiko". Sashiko drove by and reported 1 a couple of zram issues: a possible BUGON in zlib code due to missing winbits rang...

UBUNTU-CVE-2026-89509

In the Linux kernel, the following vulnerability has been resolved: RDMA/ionic: Embed counter driver data in rdmacounter allocation Commit 7e53b31acc7f "RDMA/core: Create and destroy rdmacounter using rdmazallocdrvobj" requires drivers implementing counter ops to embed struct rdmacounter in a...

UBUNTU-CVE-2026-81005

In the Linux kernel, the following vulnerability has been resolved: ipmi: si: Fix NULL pointer dereference after failed registration trysmiinit allocates newsmi-sism and later calls ipmiregistersmimod, which maps to ipmiaddsmi. During ipmiaddsmi, the upper IPMI message handler obtains the initial...

UBUNTU-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...

UBUNTU-CVE-2026-89528

In the Linux kernel, the following vulnerability has been resolved: svcrdma: Reject Read lists that exceed the page budget Individual Read segment lengths are validated at decode time, but nothing prevents a requester from sending multiple segments whose cumulative length exceeds the rqpages arra...

UBUNTU-CVE-2026-89552

In the Linux kernel, the following vulnerability has been resolved: params: fix charp corruption on allocation failure paramsetcharp stores charp parameters in allocated memory after slab is available, and releases the previous value when the parameter is updated. The previous value is released...

UBUNTU-CVE-2026-89457

In the Linux kernel, the following vulnerability has been resolved: s390/dasd: Guard sysfs discipline callbacks against unallocated private data Several sysfs show/store handlers call a discipline callback that dereferences device-private, either directly or through the DASDDEFINEATTR macro. Duri...

UBUNTU-CVE-2026-80956

In the Linux kernel, the following vulnerability has been resolved: dm-pcache: only hand out initialized cache segments getcachesegment scans the segment map up to cache-nsegs, the physical device segment count, but cachesegsinit only initializes the first cacheinfo-nsegs segments. A crafted imag...

UBUNTU-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...

UBUNTU-CVE-2026-89592

In the Linux kernel, the following vulnerability has been resolved: accel/rocket: fix NULL dereference and integer overflow in rocketjobpush rocketjobpush allocates a temporary array to hold all input and output GEM object pointers: bos = kvmallocarrayjob-inbocount + job-outbocount, sizeofvoid ,...

UBUNTU-CVE-2026-89439

In the Linux kernel, the following vulnerability has been resolved: platform/x86: ISST: Add a NULL check for sstinst To be consistent with other places, add a NULL check for failed socket loading by checking isstcommon.sstinst...

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-2026-89592

In the Linux kernel, the following vulnerability has been resolved: accel/rocket: fix NULL dereference and integer overflow in rocketjobpush rocketjobpush allocates a temporary array to hold all input and output GEM object pointers: bos = kvmallocarrayjob-inbocount + job-outbocount, sizeofvoid ,...

CVE-2026-89547

In the Linux kernel, the following vulnerability has been resolved: SUNRPC: Check svc pool percpu counter allocation svccreate initializes three per-pool percpucounter stats and ignores every return value. On SMP, percpucounterinit fails when allocpercpugfp cannot satisfy the allocation, leaving...

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...