CVE-2025-71073Input: lkkbd - disable pending work before freeing device
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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In the Linux kernel, the following vulnerability has been resolved: Input: lkkbd - disable pending work before freeing device lkkbd_interrupt() schedules lk->tq via schedule_work(), and the work handler lkkbd_reinit() dereferences the lkkbd structure and its serio/input_dev fields. lkkbd_disconnect() and error paths in lkkbd_connect() 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 disable_work_sync() instead of cancel_work_sync() to ensure the reinit work cannot be re-queued, and call it both in lkkbd_disconnect() and in lkkbd_connect() error paths after serio_open().
- CVSS
- 7.8 HIGH (v3.1, NVD)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Modified
- Record last updated
- Oct 21, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Linux Linux linux:linux (from the name) | from 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before 8cf889d45bbc8477206dda78c8f757ea8ff68213; from 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before 3a7cd1397c209076c371d53bf39a55c138f62342; from 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before cffc4e29b1e2d44ab094cf142d7c461ff09b9104; from 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before e58c88f0cb2d8ed89de78f6f17409d29cfab6c5c | CNA record |
linux linux_kernel linux:linux_kernel | from 2.6.12.1 before 6.12.64; from 6.13 before 6.18.3; 2.6.12; 2.6.12; 2.6.12; 2.6.12; 2.6.12; 6.19; and 7 more ranges | NVD |
References
- https://git.kernel.org/stable/c/8cf889d45bbc8477206dda78c8f757ea8ff68213
- https://git.kernel.org/stable/c/3a7cd1397c209076c371d53bf39a55c138f62342patch
- https://git.kernel.org/stable/c/cffc4e29b1e2d44ab094cf142d7c461ff09b9104patch
- https://git.kernel.org/stable/c/e58c88f0cb2d8ed89de78f6f17409d29cfab6c5cpatch
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.