CVE-2025-71073None▾ SunlitIn 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 …
▾ Sunlit zone — Low / medium · no exploitation signal
impact 2.8 · likelihood 0 · exploitation 0
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Exploit-prediction probability, daily snapshots since Oct 21.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via CVEORG
Last analysed / modified upstream
0.1%
0.1% → 0.2%
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().
Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 8cf889d45bbc8477206dda78c8f757ea8ff68213Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 3a7cd1397c209076c371d53bf39a55c138f62342Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < cffc4e29b1e2d44ab094cf142d7c461ff09b9104Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < e58c88f0cb2d8ed89de78f6f17409d29cfab6c5cLinux 2.6.12Refer to the linked advisories for vendor-supplied fixes and affected version ranges.
Connected by shared product, vendor, weakness, or advisory.
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