UBUNTU-CVE-2026-98688

In the Linux kernel, the following vulnerability has been resolved: thunderbolt: Fix NULL dereference in tbremovework There is a slight race between tbremovework and tbdomainremove which leads to dereferencing a NULL tb-rootswitch pointer inside tbfreeunpluggedxdomains: Thread A Thread B...

UBUNTU-CVE-2026-98689

In the Linux kernel, the following vulnerability has been resolved: thunderbolt: Don't access a DP tunnel after its DPRX read was canceled tbdpdprxwork checks -dprxcanceled before it takes tb-lock so it misses a tbdpdprxstop that could not cancel the already running work. It then polls the DPRX...

UBUNTU-CVE-2026-98693

In the Linux kernel, the following vulnerability has been resolved: thunderbolt: Hold a router reference for each allocated HopID tbstop drops the reference to all DP tunnels but does not deactivate them, thus nothing cancels a dprxwork still in flight which holds its own tunnel reference and the...

UBUNTU-CVE-2026-98709

In the Linux kernel, the following vulnerability has been resolved: wifi: mac80211: count only matching reservations in reserved switch ieee80211vifusereservedswitch validates a replacement by counting assigned links on ctx-replacectx and treating reservations too broadly. A link can still be...

UBUNTU-CVE-2026-98713

In the Linux kernel, the following vulnerability has been resolved: KVM: arm64: Apply the fine-grained UNDEFs without FEATFGT FGUs don't actually require hardware support, so don't gate fgt trap config insertion on FGT. This is the only action required to allow FGUs always, as kvmcalculatetraps...

UBUNTU-CVE-2026-98715

In the Linux kernel, the following vulnerability has been resolved: KVM: SVM: Preserve TLB control i.e. pending TLB flush on failed VMRUN Don't reset the VMCB's TLB control back to "do nothing" on a failed VMRUN, as empirical testing shows that the CPU performs the requested TLB flush if and only...

UBUNTU-CVE-2026-98716

In the Linux kernel, the following vulnerability has been resolved: KVM: SVM: Use the active VMCB's MSR bitmap when checking if MSR is intercepted Use the MSR permission bitmap of the active VMCB instead of assuming that KVM is always using vmcb02's bitmap when L2 is active, as KVM uses msrpm02 i...

UBUNTU-CVE-2026-98717

In the Linux kernel, the following vulnerability has been resolved: KVM: x86/mmu: Bail from shadow walks if the root is invalid or a dummy When walking shadow page tables, immediately terminate the walk if the root is a "dummy" root, i.e. a root whose top-level page table is backed by the zero...

UBUNTU-CVE-2026-98718

In the Linux kernel, the following vulnerability has been resolved: KVM: SEV: Do cache maintenance on the source VM before clearing SEV state Explicitly flush caches after intra-host migration before clearing "SEV active" on the source VM, as doing cache maintenance afterwards creates a tiny wind...

UBUNTU-CVE-2026-98722

In the Linux kernel, the following vulnerability has been resolved: mtd: block2mtd: Fix divide error when erasesize is zero The erase size is parsed from the "block2mtd" module parameter and can be set to zero. adddevice then evaluates if size % erasesize with a zero divisor, which triggers a...

UBUNTU-CVE-2026-98723

In the Linux kernel, the following vulnerability has been resolved: nvmet: copy the hostid into the ctrl before creating PR pcrefs Commit 6202783184bf "nvmet: Improve nvmetallocctrl interface and implementation" added a second uuidcopy of args-hostid near the end of nvmetallocctrl, and commit...

UBUNTU-CVE-2026-98728

In the Linux kernel, the following vulnerability has been resolved: tpm: fix off-by-four bounds check in tpm2getrandom When the response carries the TPM2STSESSIONS tag, tpm2getrandom skips the 4-byte parameter size field before locating the random data, but the bounds check still validates the...

UBUNTU-CVE-2026-98735

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hcicore: Serialize ACL scheduling with channel deletion hcichansent selects a channel under RCU but drops the read lock before accessing chan-conn and returning the channel. The ACL and LE schedulers then use its packe...

UBUNTU-CVE-2026-98736

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hciconn: Lock parent access during enhanced SCO setup Bluetooth: hciconn: Lock parent access during enhanced SCO setup hcienhancedsetupsync runs on the request workqueue without the hcidevlock held by its caller when...

UBUNTU-CVE-2026-98739

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: RFCOMM: Fix initial port reference race For RFCOMMRELEASEONHUP devices, rfcommttyinstall and rfcommreleasedev both use RFCOMMTTYOWNED to decide who drops the initial ttyport reference. The release path tests the bit...

UBUNTU-CVE-2026-98740

In the Linux kernel, the following vulnerability has been resolved: EDAC/altera: Drop init from ECC setup paths for re-probe safety Sashiko reports: "Does suppressing sysfs unbinding fully prevent the execution of freed init memory? If altrsysmgrregmaplookupbyphandle returns -EPROBEDEFER, the pro...

UBUNTU-CVE-2026-98742

In the Linux kernel, the following vulnerability has been resolved: ALSA: seq: Serialize compat port-info ioctls The native sequencer ioctl path serializes handler calls with client-ioctlmutex, but the translated port-info compat path invokes the same handlers through sndseqkernelclientctl withou...

UBUNTU-CVE-2026-98743

In the Linux kernel, the following vulnerability has been resolved: ASoC: codecs: rt1017-sdca-sdw: fix uninitialized streamconfig-type streamconfig is not initialized before being passed to sdwstreamaddslave. The type field may contain garbage and is later copied to stream-type by sdwconfigstream...

UBUNTU-CVE-2026-98747

In the Linux kernel, the following vulnerability has been resolved: serial: core: fix NULL pointer dereference in serialcoreunregisterport port-portdev is NULL when no port device is installed: it is cleared on teardown, and never set if registration failed before serialcoreportdeviceadd...

UBUNTU-CVE-2026-98748

In the Linux kernel, the following vulnerability has been resolved: serial: 8250bcm7271: fix use-after-free in brcmuartremove brcmuarthandleirq starts priv-hrt to work around a receive-timeout quirk of the 8250 core when hardware flow control is enabled; the timer callback brcmuarthrtimerfunc...