UBUNTU-CVE-2022-50100

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: ...

UBUNTU-CVE-2022-49986

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...

UBUNTU-CVE-2022-50116

In the Linux kernel, the following vulnerability has been resolved: tty: ngsm: fix deadlock and link starvation in outgoing data path The current implementation queues up new control and user packets as needed and processes this queue down to the ldisc in the same code path. That means that the...

UBUNTU-CVE-2022-50166

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...

UBUNTU-CVE-2022-49968

In the Linux kernel, the following vulnerability has been resolved: ieee802154/adf7242: defer destroyworkqueue call There is a possible race condition use-after-free like below FREE | USE adf7242remove | adf7242channel canceldelayedworksync | destroyworkqueue 1 | adf7242cmdrx | moddelayedwork 2 |...

CVE-2022-50166 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...

CVE-2022-50100 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: ...

CVE-2022-50100

CVE-2022-50100 affects the Linux kernel sched/core: Do not requeue a task on a CPU excluded from cpus_mask. The issue arises from a ttwu wakeup optimization that could queue a task on the wrong CPU, triggering an early-boot warning on large machines. The commit c6e7bd7afaeb implements a fix by en...

CVE-2022-49974

The CVE-2022-49974 vulnerability affects the Linux kernel HID Nintendo driver (drivers/hid/hid-nintendo.c) and stems from dereferencing a NULL pointer when queuing rumble work to a destroyed workqueue after disconnection, leading to a potential crash. The issue is mitigated by avoiding usage of t...

CVE-2022-49968 ieee802154/adf7242: defer destroy_workqueue call

In the Linux kernel, the following vulnerability has been resolved: ieee802154/adf7242: defer destroyworkqueue call There is a possible race condition use-after-free like below FREE | USE adf7242remove | adf7242channel canceldelayedworksync | destroyworkqueue 1 | adf7242cmdrx | moddelayedwork 2 |...

CVE-2022-49968

In the Linux kernel, the following vulnerability has been resolved: ieee802154/adf7242: defer destroyworkqueue call There is a possible race condition use-after-free like below FREE | USE adf7242remove | adf7242channel canceldelayedworksync | destroyworkqueue 1 | adf7242cmdrx | moddelayedwork 2 |...

Astra Linux – Vulnerability in Linux 6.12

In the Linux kernel, the following vulnerability has been resolved: bnxten: Error handling in bnxtinitchip has been fixed. The WARNON function is triggered in flushwork if bnxtinitchip fails because we call cancelworksync on dim work that has not been initialized. WARNING: CPU: 37, PID: 5223, at...

Astra Linux – Vulnerability found in Linux 6.1, Linux 6.12

In the Linux kernel, the following vulnerabilities have been resolved: bpf: Fixed a deadlock between rcutaskstrace and eventmutex. Fixed the following deadlock: - CPU A: - freeevent - perfkprobedestroy - mutexlock&eventmutex - perfTraceEventUnreg - synchronizercutaskstrace There are several paths...

Astra Linux – Vulnerability found in Linux 6.1, Linux 6.12

In the Linux kernel, the following vulnerability has been resolved: usb: gadget: core: flush gadget workqueue after device removal The devicedel function can cause new work to be scheduled in the gadget-workqueue. This issue is observed, for example, with the dwc3 driver, as follows: c devicedel...

Astra Linux – Vulnerability in Linux 6.12

In the Linux kernel, the following vulnerabilities have been resolved: drm/imagination: avoided deadlock on fence release The processing of fence release in the scheduler queue is performed on a workqueue, rather than directly in the release function itself. Deadlock issues have been fixed, such ...

Astra Linux – Vulnerability found in Linux 6.1, Linux 6.12

In the Linux kernel, the following vulnerabilities have been resolved: RDMA/cma: Fixed a crash in the cmaneteventworkhandler function. The struct rdmacmid contains a member “struct workstruct network”, which is reused to queue cmaneteventworkhandlers onto the cmawq. The crash1 can occur if more...

Astra Linux – Vulnerability found in Linux 6.1, Linux 6.12

In the Linux kernel, the following vulnerability has been resolved: acct: performs the last write operation from the workqueue. In 1, it was reported that the acct2 system call can be used to trigger a NULL derefrence in cases where it is set to write to a file that triggers an internal lookup...

Astra Linux – Vulnerability in Linux 6.12

In the Linux kernel, the following vulnerability has been resolved: mm/slab/kvfreercu: The switch to WQMEMRECLAIM wq was implemented. Currently, the kvfreercu APIs use a system workqueue, which is “systemunboundwq” for driver RCU reclamation of memory. Recently, the following kernel warning was...

Astra Linux – Vulnerability found in Linux 6.1, Linux 6.12

In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: Fixed a slab-use-after-free issue in hdcpwork Why A slab-use-after-free issue was reported when HDCP was destroyed, but the propertyvalidatedwork queue was still running. How The delayed work was canceled when th...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: Wifi: ath10k: avoiding NULL pointer errors during sdio removal When running ‘rmmod ath10k’, ath10ksdioremove will free the sdioworkqueue by calling destroyworkqueue. However, if CONFIGINITONFREEDEFAULTON is set to yes, a kernel...