CVE-2023-4134

A use-after-free vulnerability was found in the cyttsp4core driver in the Linux kernel. This issue occurs in the device cleanup routine due to a possible rearming of the watchdogtimer from the workqueue. This could allow a local user to crash the system, causing a denial of service...

kernel security and bug fix update

5.14.0-284.18.12 - cifs: fix wrong unlock before return from cifstreeconnect - docs: Remove the unnecessary unicode character - perf vendor events intel: Refresh ivytown metrics and events - perf vendor events: Update Intel ivytown - perf vendor events intel: Refresh jaketown metrics and events -...

PT-2025-54155

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description A race condition exists in the /dev/vtpmx creation process within the tpm vtpm proxy driver. The /dev/vtpmx device becomes visible before the workqueue is initialized, potentially leadin...

Important: Red Hat Security Advisory: kernel-rt security and bug fix update

An update for kernel-rt is now available for Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support, Red Hat Enterprise Linux 8.4 Telecommunications Update Service, and Red Hat Enterprise Linux 8.4 Update Services for SAP Solutions. Red Hat Product Security has rated this update as...

kernel: scsi: storvsc: Remove WQ_MEM_RECLAIM from storvsc_error_wq

In the Linux kernel, the following vulnerability has been resolved: scsi: storvsc: Remove WQMEMRECLAIM from storvscerrorwq storvscerrorwq workqueue should not be marked as WQMEMRECLAIM as it doesn't need to make forward progress under memory pressure. Marking this workqueue as WQMEMRECLAIM may...

kernel: Linux kernel: Denial of Service in mt7921e driver during module unload

A flaw was discovered in the mt76/mt7921e Wi-Fi driver in the Linux kernel where improper handling of driver data during module removal can lead to a crash. Under certain insmod/rmmod stress test conditions, the driver’s mt7921pciremove function is called while the associated mt76dev driver priva...

kernel: sched/core: Do not requeue task on CPU excluded from cpus_mask

In the Linux kernel, the following vulnerability has been resolved: sched/core: Do not requeue task on CPU excluded from cpusmask The following warning was triggered on a large machine early in boot on a distribution kernel but the same problem should also affect mainline. WARNING: CPU: 439 PID: ...

kernel: RDMA/core: Fix null-ptr-deref in ib_core_cleanup()

In the Linux kernel, the following vulnerability has been resolved: RDMA/core: Fix null-ptr-deref in ibcorecleanup KASAN reported a null-ptr-deref error: KASAN: null-ptr-deref in range 0x0000000000000118-0x000000000000011f CPU: 1 PID: 379 Hardware name: QEMU Standard PC i440FX + PIIX, 1996 RIP:...

kernel: NULL pointer dereference in traffic control subsystem

A NULL pointer dereference flaw was found in qdiscgraft in net/sched/schapi.c in the Linux kernel. This issue may allow a local unprivileged user to trigger a denial of service if the allocworkqueue function return is not validated in time of failure, resulting in a system crash or leaked interna...

kernel: HID: nintendo: fix rumble worker null pointer deref

In the Linux kernel, the following vulnerability has been resolved: HID: nintendo: fix rumble worker null pointer deref We can dereference a null pointer trying to queue work to a destroyed workqueue. If the device is disconnected, nintendohidremove is called, in which the rumblequeue is destroye...

kernel: Bluetooth: When HCI work queue is drained, only queue chained work

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: When HCI work queue is drained, only queue chained work The HCI command, event, and data packet processing workqueue is drained to avoid deadlock in commit 76727c02c1e1 "Bluetooth: Call drainworkqueue before resetting...

kernel: RDMA/core: Fix null-ptr-deref in ib_core_cleanup()

In the Linux kernel, the following vulnerability has been resolved: RDMA/core: Fix null-ptr-deref in ibcorecleanup KASAN reported a null-ptr-deref error: KASAN: null-ptr-deref in range 0x0000000000000118-0x000000000000011f CPU: 1 PID: 379 Hardware name: QEMU Standard PC i440FX + PIIX, 1996 RIP:...

kernel: sched/core: Do not requeue task on CPU excluded from cpus_mask

In the Linux kernel, the following vulnerability has been resolved: sched/core: Do not requeue task on CPU excluded from cpusmask The following warning was triggered on a large machine early in boot on a distribution kernel but the same problem should also affect mainline. WARNING: CPU: 439 PID: ...

kernel: NULL pointer dereference in traffic control subsystem

A NULL pointer dereference flaw was found in qdiscgraft in net/sched/schapi.c in the Linux kernel. This issue may allow a local unprivileged user to trigger a denial of service if the allocworkqueue function return is not validated in time of failure, resulting in a system crash or leaked interna...

kernel: Bluetooth: use hdev->workqueue when queuing hdev->{cmd,ncmd}_timer works

n the Linux kernel’s Bluetooth subsystem there is a flaw in the way Bluetooth HCI work items are queued. Under certain conditions, work associated with command timeouts hdev-cmd,ncmdtimer could be scheduled on the wrong workqueue while the intended workqueue is being drained. This occurs because...

kernel: Linux kernel: Denial of Service in mt7921e driver during module unload

A flaw was discovered in the mt76/mt7921e Wi-Fi driver in the Linux kernel where improper handling of driver data during module removal can lead to a crash. Under certain insmod/rmmod stress test conditions, the driver’s mt7921pciremove function is called while the associated mt76dev driver priva...

kernel: xfrm: Reinject transport-mode packets through workqueue

In the Linux kernel, the following vulnerability has been resolved: xfrm: Reinject transport-mode packets through workqueue The following warning is displayed when the tcp6-multi-diffip11 stress test case of the LTP test suite is tested: watchdog: BUG: soft lockup - CPU0 stuck for 22s!...

kernel: NULL pointer dereference in traffic control subsystem

A NULL pointer dereference flaw was found in qdiscgraft in net/sched/schapi.c in the Linux kernel. This issue may allow a local unprivileged user to trigger a denial of service if the allocworkqueue function return is not validated in time of failure, resulting in a system crash or leaked interna...

PT-2025-25912 · Linux +2 · Linux Kernel +2

Name of the Vulnerable Software and Affected Versions: Linux kernel versions prior to 5.4.0-1086-azure 9118.04.1-Ubuntu Description: The issue is related to the storvsc error wq workqueue in the Linux kernel, which was incorrectly marked as WQ MEM RECLAIM. This marking may cause a deadlock while...

PT-2025-54073

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description A flaw exists in the Linux kernel related to ACPI Embedded Controller EC query handlers. Specifically, removing custom query handlers could lead to a kernel oops if the module containing...