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-2026-98752

In the Linux kernel, the following vulnerability has been resolved: tty: port: fix ttyportttyvhangup race Drivers rely on ttyportttyvhangup to synchronously hang up their ports before tearing down resources as part of deregistration e.g. on physical disconnect. If ttyportttyvhangup races with...

UBUNTU-CVE-2026-98753

In the Linux kernel, the following vulnerability has been resolved: tty: ttyport: restore TTYIOERROR on activation failure Make sure to restore the TTYIOERROR flag if activation fails to prevent I/O attempts on a port that is gone or powered down. This specifically avoids issues like kernel panic...

UBUNTU-CVE-2026-98764

In the Linux kernel, the following vulnerability has been resolved: usb: gadget: ffs: Fix NULL pointer dereference in FUNCTIONFSENDPOINTDESC When user space sets up FunctionFS with only full-speed descriptors e.g., flags = FUNCTIONFSHASFSDESC and the gadget operates at a higher speed such as...

UBUNTU-CVE-2026-98786

In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: guard dcsink dereferences in MST mode validation dmdpmstisportsupportmode reads aconnector-dcsink-dsccaps... for the DSC branch-throughput check, and getconvfrlbw's HDMI-PCON FRL-bandwidth path reads...

UBUNTU-CVE-2026-98841

In the Linux kernel, the following vulnerability has been resolved: virt: vmgenid: set driverdata before registering notification handlers Both probe paths register their notification handler before assigning driverdata, which the handler dereferences. In the devicetree path, the notification IRQ...

CVE-2026-98476

In the Linux kernel, the following vulnerability has been resolved: s390/cio: Fix NULL pointer dereference in ccwdevicegetutilstr The channel path registry entry associated with a CHPID may be removed while the subchannel's PMCW still references that CHPID. In this case, chpidtochp can return NUL...

CVE-2026-98477

In the Linux kernel, the following vulnerability has been resolved: perf/core: Fix NULL pmuctx passed to pmu-schedtask perfpmuschedtask returns early when cpuctx-taskctx is set, and cpc-taskepc is only non-NULL while a task context is scheduled in on this CPU. perfpmuschedtask therefore always...

CVE-2026-98676

In the Linux kernel, the following vulnerability has been resolved: iio: adc: ade9000: fix NULL pointer dereference in clkout registration ade9000setupclkout passes NULL as the register address when registering a divider clock. During clock registration, the common clock framework calls...

CVE-2026-98695

In the Linux kernel, the following vulnerability has been resolved: USB: serial: fix ioctl hangup race The tty ioctls can race with hangup and end up calling into a tty driver for a device that is already gone or powered down. Serialise the callbacks using the tty port mutex and add the missing...

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...

CVE-2026-98756

In the Linux kernel, the following vulnerability has been resolved: usb: cdns3: Fix NULL pointer dereference in cdns3pciprobe The Cadence USBSS controller is a two-function PCI device. The first probed function allocates the driver data and stores it with pcisetdrvdata, while the second function...

CVE-2026-98764

In the Linux kernel, the following vulnerability has been resolved: usb: gadget: ffs: Fix NULL pointer dereference in FUNCTIONFSENDPOINTDESC When user space sets up FunctionFS with only full-speed descriptors e.g., flags = FUNCTIONFSHASFSDESC and the gadget operates at a higher speed such as...

CVE-2026-98785

In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: check dcstatecreatecopy for NULL in dmsuspend dcstatecreatecopy can return NULL on allocation failure. dmsuspend only conditionally skips dmgpuresettoggleinterrupts and continues execution, returning success...

CVE-2026-98795

In the Linux kernel, the following vulnerability has been resolved: net: sparx5: skip ptp deinit if init was skipped sparx5ptpinit returns early on the base lan969x variants because they do not have the SPX5FEATUREPTP flag. It also returns early when no "ptp" interrupt is described. Unbinding the...

CVE-2026-98841

In the Linux kernel, the following vulnerability has been resolved: virt: vmgenid: set driverdata before registering notification handlers Both probe paths register their notification handler before assigning driverdata, which the handler dereferences. In the devicetree path, the notification IRQ...

CVE-2026-98849

In the Linux kernel, the following vulnerability has been resolved: pfcp: fix socket lifetime on netdevice registration failure pfcpnewlink creates the UDP socket before registernetdevice. If registration fails after pfcpdevinit succeeds, the core calls pfcpdevuninit, which releases the socket an...

UBUNTU-CVE-2026-98651

In the Linux kernel, the following vulnerability has been resolved: KVM: s390: Properly handle NULL pointer in datcondsetstoragekey Some callers pass NULL as oldkey. Calling pagecondsetstoragekey will cause that NULL pointer to get dereferenced. Fix by checking for NULL and assigning the pointer ...

UBUNTU-CVE-2026-98812

In the Linux kernel, the following vulnerability has been resolved: net/mctp: publish the mctpdev only after it is initialised mctpadddev links the new mctpdev into dev-mctpptr before mdev-dev is assigned, so a reader that picks the device up in that window dereferences a netdevice pointer that i...

CVE-2026-98786

In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: guard dcsink dereferences in MST mode validation dmdpmstisportsupportmode reads aconnector-dcsink-dsccaps... for the DSC branch-throughput check, and getconvfrlbw's HDMI-PCON FRL-bandwidth path reads...