CVE-2026-99167: Linux: In the Linux kernel, the following vulnerability has been resolved: net/sched: fix use-after-free in __tcf_action_put()…

In the Linux kernel, the following vulnerability has been resolved: net/sched: fix use-after-free in tcfactionput tcfactionput decrements the reference count before decrementing the binding count. Another thread can free the action between these operations, causing the binding-count update to...

CVE-2026-99101

In the Linux kernel, the following vulnerability has been resolved: ntfs: move attribute payload before shrinking its record ntfsnewattrflags resizes the non-resident attribute record before moving its name and mapping pairs to their shorter-header offsets when compression or sparse state is...

CVE-2026-99162: Linux: In the Linux kernel, the following vulnerability has been resolved: gpio: shared: fix use-after-free bug when adding…

In the Linux kernel, the following vulnerability has been resolved: gpio: shared: fix use-after-free bug when adding shared proxies The GPIO lookup table can stay alive for longer than the kobject whose name string's address we're assigning to lookup-devid. Fix a potential UAF by duplicating the...

CVE-2026-99178: Linux: In the Linux kernel, the following vulnerability has been resolved: x86/kvm: Don't consume async #PF flags on a kernel…

In the Linux kernel, the following vulnerability has been resolved: x86/kvm: Don't consume async PF flags on a kernel PF in NMI context An async PF "page not present" event arrives through the PF vector, and its reason sits in the per-CPU apfreason.flags until kvmhandleasyncpf reads and clears it...

UBUNTU-CVE-2026-99186

In the Linux kernel, the following vulnerability has been resolved: x86/insn-eval: Fix shadowed segment index in getsegregoverrideidx Commit 45e1dccc0653 "x86/insn: Simplify foreachinsnprefix" made foreachinsnprefix declare its own loop counter named idx. getsegregoverrideidx keeps its result in ...

CVE-2026-99117

In the Linux kernel, the following vulnerability has been resolved: net: bridge: mcast: don't truncate the port group walk on teardown brmulticastdisableportctx and brmulticastdelport walk port-mglist with hlistforeachentrysafe. However, brmulticastfinddelpg can also delete other entries from the...

CVE-2026-99134

In the Linux kernel, the following vulnerability has been resolved: mac802154: fix data race and NULL deref on local-assocdev local-assocdev is shared between the association path and the association-response worker without common synchronization. mac802154performassociation stores the coordinato...

CVE-2026-99137: Linux: In the Linux kernel, the following vulnerability has been resolved: cifs: don't update i_size in cifs_do_truncate…

In the Linux kernel, the following vulnerability has been resolved: cifs: don't update isize in cifsdotruncate without a cached handle If findwritablefile returns null, cifsfileflush will return 0 without issuing setfilesize, and the outer 'if !rc' block will set isize to 0 before telling the...

Linux kernel security vulnerabilities

A security vulnerability exists in Linux kernel version 6.19. It arises when amdgpuhmmrangealloc fails; as a result, amdgpugemuserptrioctl directly returns -ENOMEM and skips cleanup, leaving behind GEM objects, bo-parent references on VM root, and MMU notifier registrations. This may lead to...

CVE-2026-99187

In the Linux kernel, the following vulnerability has been resolved: perf: Fix perfpmumigratecontext leaving events behind perfpmuremove walks the group leaders of a CPU and PMU with perfeventgroupsforcpupmu, removing each one as it goes. perfremovefromcontext takes the leader out of the groups...

CVE-2026-99130

In the Linux kernel, the following vulnerability has been resolved: iouring/cancel: don't spin on local work the task can't run iouringcancelgeneric refuses to sleep while any ring on the exiting task's tctx has local work pending. It assumes the task is that ring's submitter and that the next...

CVE-2026-99211

In the Linux kernel, the following vulnerability has been resolved: netlink: reset skb headers before unicast and multicast filtering Socket filters can use SKFNETOFF and SKFLLOFF to read relative to an skb's network and MAC headers. Netlink producers may reserve headroom without resetting those...

UBUNTU-CVE-2026-99157

In the Linux kernel, the following vulnerability has been resolved: scsi: bsg: Pass replylen to bsgsetupqueue to fit UFS ARPMB replies bsg-lib allocates a 96-byte SCSISENSEBUFFERSIZE reply buffer per job, but struct ufsrpmbreply is 104 bytes: a 40-byte struct ufsbsgreply followed by a 64-byte EHS...

PT-2026-128150

In the Linux kernel, the following vulnerability has been resolved: scsi: bsg: Pass reply len to bsg setup queue to fit UFS ARPMB replies bsg-lib allocates a 96-byte SCSI SENSE BUFFERSIZE reply buffer per job, but struct ufs rpmb reply is 104 bytes: a 40-byte struct ufs bsg reply followed by a...

PT-2026-128198

In the Linux kernel, the following vulnerability has been resolved: sched/core: Call wakeup preempt for queued tasks during class change Paul reported recent RCU changes exposed a lost resched where CPU idles with a rcutorture thread waiting while being completely runnable. Dumping the rq state a...

CVE-2026-99186

In the Linux kernel, the following vulnerability has been resolved: x86/insn-eval: Fix shadowed segment index in getsegregoverrideidx Commit 45e1dccc0653 "x86/insn: Simplify foreachinsnprefix" made foreachinsnprefix declare its own loop counter named idx. getsegregoverrideidx keeps its result in ...

PT-2026-128194

In the Linux kernel, the following vulnerability has been resolved: netlink: avoid hashing the network namespace pointer The netlink rhashtable key includes a raw struct net pointer and a user-controlled port ID. Both /proc/net/netlink and socket diagnostics expose the table's bucket order. By...

UBUNTU-CVE-2026-99171

In the Linux kernel, the following vulnerability has been resolved: ntfs3: free the sbi after a grace period If the "nocase" mount option ntfs3 uses custom hash and dentry compare functions. Both access ntfs3 superblock private information in rcu pathwalk. ntfsputsuper and ntfs3killsb drop the in...

UBUNTU-CVE-2026-99178

In the Linux kernel, the following vulnerability has been resolved: x86/kvm: Don't consume async PF flags on a kernel PF in NMI context An async PF "page not present" event arrives through the PF vector, and its reason sits in the per-CPU apfreason.flags until kvmhandleasyncpf reads and clears it...

CVE-2026-99104

In the Linux kernel, the following vulnerability has been resolved: schedext: Fix the bypass dispatch claim for schedulers bypassed by an ancestor scxbypass claims bypass dispatch when the scheduler's depth goes from zero to one and releases it when the depth returns to zero, but propagates only...