Description (CNA)
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().
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before 8cf889d45bbc8477206dda78c8f757ea8ff68213; affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before 3a7cd1397c209076c371d53bf39a55c138f62342; affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before cffc4e29b1e2d44ab094cf142d7c461ff09b9104; affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before e58c88f0cb2d8ed89de78f6f17409d29cfab6c5c |
| Linux / Linux | affected 2.6.12; unaffected 0 before 2.6.12; unaffected 6.6.160 through 6.6.*; unaffected 6.12.64 through 6.12.*; unaffected 6.18.3 through 6.18.*; unaffected 6.19 through * |
CWE
No CWE identifiers supplied.