AZL-74354
See a problem?- Import Source
- https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-74354.json
- JSON Data
- https://api.test.osv.dev/v1/vulns/AZL-74354
- Upstream
- Published
- 2026-01-13T16:16:06Z
- Modified
- 2026-04-01T05:22:22.495515Z
- Summary
- CVE-2025-71073 affecting package kernel 6.6.126.1-1
- Details
-
In the Linux kernel, the following vulnerability has been resolved:
Input: lkkbd - disable pending work before freeing device
lkkbdinterrupt() schedules lk->tq via schedulework(), and the work handler lkkbdreinit() dereferences the lkkbd structure and its serio/inputdev fields.
lkkbddisconnect() and error paths in lkkbdconnect() free the lkkbd structure without preventing the reinit work from being queued again until serio_close() returns. This can allow the work handler to run after the structure has been freed, leading to a potential use-after-free.
Use disableworksync() instead of cancelworksync() to ensure the reinit work cannot be re-queued, and call it both in lkkbddisconnect() and in lkkbdconnect() error paths after serio_open().
- References