Important: kernel

Issue Overview: In the Linux kernel, the following vulnerability has been resolved: xfs: resample the data fork mapping after cycling ILOCK CVE-2026-64600 Affected Packages: kernel Note: This advisory is applicable to Amazon Linux 2 - Kernel-5.4 Extra. Visit this page to learn more about Amazon...

UBUNTU-CVE-2026-64211

In the Linux kernel, the following vulnerability has been resolved: srcu: Don't queue workqueue handlers to never-online CPUs While an srcustruct structure is in the midst of switching from CPU-0 to all-CPUs state, it can attempt to invoke callbacks for CPUs that have never been online. Worse yet...

UBUNTU-CVE-2026-64518

In the Linux kernel, the following vulnerability has been resolved: tcp: Fix out-of-bounds access for twsk in tcpaoestablishedkey. lockdepsockisheld was added in tcpaoestablishedkey by the cited commit. It can be called from tcpv46timewaitack with twsk. Since it does not have sk-sklock, the lockd...

UBUNTU-CVE-2026-64219

In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: Validate payload length and linkindex in dcprocessdmubauxtransferasync Why&How dcprocessdmubauxtransferasync copies payload-length bytes into a 16-byte stack buffer dpaux.data16 guarded only by an ASSERT, which i...

UBUNTU-CVE-2026-64520

In the Linux kernel, the following vulnerability has been resolved: firmware: armffa: Bound PARTITIONINFOGETREGS copies The register-based PARTITIONINFOGET path trusted the firmware-provided indices when copying partition descriptors into the caller buffer. Reject inconsistent counts or index...

UBUNTU-CVE-2026-64517

In the Linux kernel, the following vulnerability has been resolved: drm/xe/gsc: Fix double-free of managed BO in error path The error path in xegscinitposthwconfig explicitly frees a BO allocated with xemanagedbocreatepinmap via xebounpinmapnovm. Since the managed BO already has a devm cleanup...

UBUNTU-CVE-2026-64522

In the Linux kernel, the following vulnerability has been resolved: net/mlx5e: Fix eswitch mode block underflow on IPsec acquire SA mlx5exfrmaddstate handles acquire-flow temporary SAs by allocating software state and skipping hardware offload setup. That path jumps to the common success label...

UBUNTU-CVE-2026-64224

In the Linux kernel, the following vulnerability has been resolved: octeontx2-pf: fix double free in rvureprsrcinit rvureprsrcinit allocates queue memory before calling otx2inithwresources. When hardware resource setup fails, otx2inithwresources already unwinds the partially initialized SQ, CQ, a...

UBUNTU-CVE-2026-64235

In the Linux kernel, the following vulnerability has been resolved: x86/ftrace: Relocate %rip-relative percpu refs in dynamic trampolines With CONFIGCALLDEPTHTRACKING enabled on an x86 retbleed-affected platform eg: Skylake, with retbleed=stuff, registering a dynamic ftrace trampoline crashes on...

UBUNTU-CVE-2026-64209

In the Linux kernel, the following vulnerability has been resolved: phy: qcom: qmp-usbc: Fix out-of-bounds array access in dp swing config swingtbl and preemphasistbl are 4x4 arrays valid indices 0-3, but the boundary check uses " 4" instead of "= 4", allowing index 4 to cause an out-of-bounds...

UBUNTU-CVE-2026-64215

In the Linux kernel, the following vulnerability has been resolved: drm/msm/a6xx: Check kzalloc return in a8xxhfisendperftable Check the return value of kzalloc to prevent a NULL pointer dereference on allocation failure. Patchwork: https://patchwork.freedesktop.org/patch/721342/...

UBUNTU-CVE-2026-64524

In the Linux kernel, the following vulnerability has been resolved: drm/hyperv: validate resolutioncount and fix WIN8 fallback A SYNTHVIDRESOLUTIONRESPONSE with resolutioncount 64 walks past the supportedresolutionSYNTHVIDMAXRESOLUTIONCOUNT array in the parse loop. Bound resolutioncount against t...

CVE-2026-64230

In the Linux kernel, the following vulnerability has been resolved: regulator: tps65219: fix irqdata.rdev not being assigned Commit 64a6b577490c "regulator: tps65219: Remove debugging helper function" removed the tps65219getrdevbyname helper along with the irqdata.rdev assignment that depended on...

CVE-2026-64515

In the Linux kernel, the following vulnerability has been resolved: wifi: mac80211: fix MLE defragmentation If either reconf or EPCS multi-link element MLE is contained in a non-transmitted profile, the defragmentation routine is called with a pointer to the defragmented copy, but the original...

CVE-2026-64527

In the Linux kernel, the following vulnerability has been resolved: drm/hyperv: validate VMBus packet size in receive callback hypervreceivesub reads msg-vidhdr.type and dispatches into one of four message-type branches without knowing how many bytes the host wrote into hv-recvbuf. The completion...

CVE-2026-64528

In the Linux kernel, the following vulnerability has been resolved: tty: serial: samsung: Remove redundant port lock acquisition in rx helpers Sashiko identified a deadlock when the console flow is engaged 1. When console flow control is enabled UPFCONSFLOW, s3c24xxserialstoptx calls...

CVE-2026-64216

In the Linux kernel, the following vulnerability has been resolved: netfs: Fix potential UAF in netfsunlockabandonedreadpages netfsunlockabandonedreadpagesrreq accesses the index of the folios it is wanting to unlock and compares that to rreq-nounlockfolio so that it doesn't unlock a folio being...

CVE-2026-64518

In the Linux kernel, the following vulnerability has been resolved: tcp: Fix out-of-bounds access for twsk in tcpaoestablishedkey. lockdepsockisheld was added in tcpaoestablishedkey by the cited commit. It can be called from tcpv46timewaitack with twsk. Since it does not have sk-sklock, the lockd...

CVE-2026-64211

In the Linux kernel, the following vulnerability has been resolved: srcu: Don't queue workqueue handlers to never-online CPUs While an srcustruct structure is in the midst of switching from CPU-0 to all-CPUs state, it can attempt to invoke callbacks for CPUs that have never been online. Worse yet...

CVE-2026-64521

In the Linux kernel, the following vulnerability has been resolved: pinctrl: meson: amlogic-a4: fix deadlock issue Accessing the pinconf-pins sysfs node may deadlock. pinconfpinsshow holds pctldev-mutex, and the platform driver calls pinctrlfindgpiorangefrompin, which tries to acquire the same...