CVE-2024-45007: char: xillybus: Don't destroy workqueue from work item running on it

Severity: medium (CVSS 5.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2024-09-04 · updated 2026-06-17

Description

In the Linux kernel, the following vulnerability has been resolved: char: xillybus: Don't destroy workqueue from work item running on it Triggered by a kref decrement, destroy_workqueue() may be called from within a work item for destroying its own workqueue. This illegal situation is averted by adding a module-global workqueue for exclusive use of the offending work item. Other work items continue to be queued on per-device workqueues to ensure performance.

Affected products

Linux kernel: from 5.14 before 5.15.166; from 5.16 before 6.1.107; from 6.2 before 6.6.48; from 6.7 before 6.10.7; 6.11-rc1, 6.11-rc2, 6.11-rc3 — fixed in 5.15.166, 6.1.107, 6.10.7, 6.6.48

How to fix

Upgrade to a fixed version: Linux kernel 5.15.166, 6.1.107, 6.10.7, 6.6.48. Check the vendor advisory for mitigations.

References

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