CVE-2025-21786 workqueue: Put the pwq after detaching the rescuer from the pool

In the Linux kernel, the following vulnerability has been resolved: workqueue: Put the pwq after detaching the rescuer from the pool The commit 68f83057b913"workqueue: Reap workers via kthreadstop and remove detachcompletion" adds code to reap the normal workers but mistakenly does not handle the...

CVE-2025-21786 workqueue: Put the pwq after detaching the rescuer from the pool

In the Linux kernel, the following vulnerability has been resolved: workqueue: Put the pwq after detaching the rescuer from the pool The commit 68f83057b913"workqueue: Reap workers via kthreadstop and remove detachcompletion" adds code to reap the normal workers but mistakenly does not handle the...

CVE-2025-21786

In the Linux kernel, the following vulnerability has been resolved: workqueue: Put the pwq after detaching the rescuer from the pool The commit 68f83057b913"workqueue: Reap workers via kthreadstop and remove detachcompletion" adds code to reap the normal workers but mistakenly does not handle the...

CVE-2025-21786

CVE-2025-21786 concerns a Linux kernel workqueue use-after-free. The issue arises from a patch that reap workers via kthread_stop() and detaches the rescuer, but incorrectly does not preserve the rescuer’s reference to the pool and removes the code waiting for the rescuer in put_unbound_pool(). T...

PT-2025-8987 · Linux +1 · Linux Kernel +1

Name of the Vulnerable Software and Affected Versions: Linux kernel affected versions not specified Description: A potential deadlock issue in the Linux kernel's rhashtable has been resolved. The problem occurred due to a possible circular locking dependency between the rhashtable bucket, rq lock...

DEBIAN-CVE-2022-49133

In the Linux kernel, the following vulnerability has been resolved: drm/amdkfd: svm range restore work deadlock when process exit kfdprocessnotifierrelease flush svmrangerestorework which calls svmrangelistlockandflushwork to flush deferredlist work, but if deferredlist work mmput release the las...

DEBIAN-CVE-2022-49059

In the Linux kernel, the following vulnerability has been resolved: nfc: nci: add flushworkqueue to prevent uaf Our detector found a concurrent use-after-free bug when detaching an NCI device. The main reason for this bug is the unexpected scheduling between the used delayed mechanism timer and...

UBUNTU-CVE-2022-49133

In the Linux kernel, the following vulnerability has been resolved: drm/amdkfd: svm range restore work deadlock when process exit kfdprocessnotifierrelease flush svmrangerestorework which calls svmrangelistlockandflushwork to flush deferredlist work, but if deferredlist work mmput release the las...

UBUNTU-CVE-2022-49059

In the Linux kernel, the following vulnerability has been resolved: nfc: nci: add flushworkqueue to prevent uaf Our detector found a concurrent use-after-free bug when detaching an NCI device. The main reason for this bug is the unexpected scheduling between the used delayed mechanism timer and...

CVE-2022-49696

In the Linux kernel, the following vulnerability has been resolved: tipc: fix use-after-free Read in tipcnamedreinit syzbot found the following issue on: ================================================================== BUG: KASAN: use-after-free in tipcnamedreinit+0x94f/0x9b0...

CVE-2022-49059 nfc: nci: add flush_workqueue to prevent uaf

In the Linux kernel, the following vulnerability has been resolved: nfc: nci: add flushworkqueue to prevent uaf Our detector found a concurrent use-after-free bug when detaching an NCI device. The main reason for this bug is the unexpected scheduling between the used delayed mechanism timer and...

CVE-2022-49059

The CVE-2022-49059 issue is a Linux kernel vulnerability in NFC/NCI where a race between a delayed mechanism (timer) and a workqueue can lead to a use-after-free when detaching an NCI device. The fix added flush_workqueue to prevent this UAF by ensuring the timer/workqueue lifecycle cannot race w...

PT-2025-20536

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description A deadlock issue has been identified in the Linux kernel, specifically between rcu tasks trace and event mutex. This occurs due to a lock dependency when free event grabs event mutex and...

PT-2025-10070

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description A issue in the Linux kernel has been resolved, related to the gadget workqueue not being properly cleaned up after device removal. This can lead to new work being scheduled in the...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: net/mlx5: Always drain health during the shutdown callback. There is no point in performing recovery operations during device shutdown. If health-related tasks are initiated, one must wait until they are completed to avoid race...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: iouring: Check whether iowq is killed before queuing it. Task work can be executed after the task has gone through iouring termination—whether it’s the final taskwork run or the fallback path. In this case, task work will find th...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: kthread: Unpark only parks kthreads. Calling kthreadunpark unconditionally is mostly harmless when the kthread is already unparked. In that case, the wake-up call is simply ignored because the task is not in the TASKPARKED state...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerabilities have been resolved: cifs: fixed the potential use of a null pointer in destroyworkqueue within the error path of initcifs. Dan Carpenter reported a Smack static checker warning: fs/smb/client/cifsfs.c:1981 initcifs Error: We previously assumed th...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: serial: max3100: Lock port-lock when calling uarthandlectschange The uarthandlectschange function must be called with the port locked. Since we execute it in a separate process, the lock might not be taken at the time of executio...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerabilities have been resolved: Bluetooth: hcicore: cancels all operations upon calling hciunregisterdev. syzbot reports that calling hcireleasedev from hcierrorreset can cause a deadlock at destroyworkqueue. This occurs because hcierrorreset is called from...