UBUNTU-CVE-2026-64376

In the Linux kernel, the following vulnerability has been resolved: firmwareloader: fix device reference leak in firmwareuploadregister firmwareuploadregister - fwcreateinstance - deviceinitialize After fwcreateinstance succeeds, the lifetime of the embedded struct device is expected to be manage...

UBUNTU-CVE-2026-64490

In the Linux kernel, the following vulnerability has been resolved: ALSA: virtio: Validate control metadata from the device virtio-snd control handling trusts the device-provided control type and value count returned by the device. That metadata is then used directly to index gv2atypemap in...

UBUNTU-CVE-2026-64476

In the Linux kernel, the following vulnerability has been resolved: vfio/pci: Latch disableidled3 per device When disableidled3 was introduced in vfio-pci, it directly manipulated the device power state with pcisetpowerstate. There were no refcounts to maintain or balanced operations, we could...

UBUNTU-CVE-2026-64444

In the Linux kernel, the following vulnerability has been resolved: staging: rtl8723bs: fix OOB read in OnAssocRsp IE loop The IE parsing loop in OnAssocRsp advances by pIE-length + 2 each iteration but only guards on i length from pframepktlen, which is one byte past the allocated receive buffer...

UBUNTU-CVE-2026-64384

In the Linux kernel, the following vulnerability has been resolved: smb: client: fix change notify replay double-free A response-bearing attempt can return a replayable error and free its response buffer. If SMB2notifyinit fails before the next send, cleanup retains the previous buffer type and...

UBUNTU-CVE-2026-64417

In the Linux kernel, the following vulnerability has been resolved: mm: shrinker: fix NULL pointer dereference in debugfs shrinkerdebugfsadd creates both "count" and "scan" debugfs files unconditionally. That assumes every shrinker implements both countobjects and scanobjects, which is not...

CVE-2026-64287

In the Linux kernel, the following vulnerability has been resolved: KVM: arm64: Bound usedlrs when flushing the pKVM hyp vCPU flushhypvcpu copies the host vGIC state into the hyp's private vCPU on every run. The vGIC list register save and restore use usedlrs as their loop bound and expect it to...

CVE-2026-64386

In the Linux kernel, the following vulnerability has been resolved: smb: client: fix queryinfo replay double-free A response-bearing attempt can return a replayable error and free its response buffer. If SMB2queryinfoinit fails before the next send, cleanup retains the previous buffer type and...

CVE-2026-64388

In the Linux kernel, the following vulnerability has been resolved: smb/client: fix chown/chgrp with SMB3 POSIX Extensions Ownership chown and group chgrp modifications were being ignored when mounting with SMB3 POSIX Extensions unless CIFSMOUNTCIFSACL or CIFSMOUNTMODEFROMSID were also explicitly...

UBUNTU-CVE-2026-64434

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: L2CAP: Fix UAF in channel timeout by holding conn ref l2capchantimeout runs asynchronously and accesses chan-conn. If the connection is torn down while the timer is running or pending, chan-conn can be freed, leading t...

CVE-2026-64406

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: fix UAF in btacceptdequeue btacceptget takes a temporary reference before dropping the accept queue lock. btacceptdequeue currently drops that reference before btacceptunlink, leaving only the queue reference...

UBUNTU-CVE-2026-64469

In the Linux kernel, the following vulnerability has been resolved: binder: fix UAF in binderthreadrelease When a thread exits, binderthreadrelease walks its transaction stack to clear the t-from and t-toproc that correspond with the exiting thread. However, a process dying in parallel might...

UBUNTU-CVE-2026-64359

In the Linux kernel, the following vulnerability has been resolved: nilfs2: reject CLEANSEGMENTS ioctl with out-of-range segment numbers Syzbot reported a hung task in nilfstransactionbegin where multiple tasks performing chmod on a nilfs2 mount blocked for over 143 seconds waiting to acquire...

CVE-2026-64528 tty: serial: samsung: Remove redundant port lock acquisition in rx helpers

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...

EUVD-2026-49038

In the Linux kernel, the following vulnerability has been resolved: ethtool: tsconfig: fix missing ethnlopscomplete tsconfigpreparedata calls ethnlopsbegin, we need to call ethnlopscomplete before returning the error...

CVE-2026-64524 drm/hyperv: validate resolution_count and fix WIN8 fallback

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-2026-64521

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...

CVE-2026-64521

CVE-2026-64521 affects the Linux kernel pinctrl subsystem (meson: amlogic-a4). The deadlock arises when pinconf_pins_show() holds pctldev->mutex while pinctrl_find_gpio_range_from_pin() tries to re-acquire the same mutex; the fix is to use pinctrl_find_gpio_range_from_pin_nolock() to avoid the...

CVE-2026-64515 wifi: mac80211: fix MLE defragmentation

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-2026-64512

In CVE-2026-64512, a Linux kernel issue in the ACPI CPPC module stems from field misuse of reg->access_width depending on reg->space_id. When using ACPI_ADR_SPACE_PLATFORM_COMM, access_width indicates the PCC region and can trigger UBSAN shift-out-of-bounds, as illustrated by UBSAN: shift-o...