Description
In the Linux kernel, the following vulnerability has been resolved: media: cx23885: cancel NetUP CI work before teardown netup_ci_exit() frees a netup_ci_state while its work item, netup_read_ci_status(), may still be pending or running on the system workqueue. The worker obtains the state with container_of() and dereferences it, so it must not outlive the state. netup_ci_init() queues the initial status read, and CI GPIO interrupts subsequently queue the same work from netup_ci_slot_status(). During remove, cx23885_finidev() calls free_irq() before the CI device is unregistered. free_irq() prevents further IRQ handlers from running, but does not drain work queued previously, so the worker can run after netup_ci_exit() frees the state. Call cancel_work_sync() before dvb_ca_en50221_release() and kfree(). This issue was found by an in-house static analysis tool.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Linux Linux
Default version status: unaffected
c184dcd282337c09695a4c1761d7ac77fdc8fb7d to < aaf76794b870b0f391eff339252a2e2e22f33a4aaffectedc184dcd282337c09695a4c1761d7ac77fdc8fb7d to < f7ff5adb63c1b277565afa54ccc0924d841b4a52affectedc184dcd282337c09695a4c1761d7ac77fdc8fb7d to < 140ecbcbf978fbe60f83f8d4f8b1199029a5c763affectedc184dcd282337c09695a4c1761d7ac77fdc8fb7d to < ec82b0cf7f75fd95802592dcc9560fc7f529bba4affectedc184dcd282337c09695a4c1761d7ac77fdc8fb7d to < 5deec890ecfa04d21cfa9bb9a2fe5e9dc98db5c5affectedc184dcd282337c09695a4c1761d7ac77fdc8fb7d to < bf3f49273d5bf6acbdad18ff44c01ffcf7a7a146affectedc184dcd282337c09695a4c1761d7ac77fdc8fb7d to < 99cd62b9b1c818d6d01a87be9a8e5796314150a2affectedc184dcd282337c09695a4c1761d7ac77fdc8fb7d to < 4e143d662ca94888b494b2427fc9e34494eb933aaffected
Linux Linux
Default version status: affected
2.6.30affected0 to < 2.6.30unaffected5.10.270 to ≤ 5.10.*unaffected5.15.221 to ≤ 5.15.*unaffected6.1.188 to ≤ 6.1.*unaffected6.6.157 to ≤ 6.6.*unaffected6.12.110 to ≤ 6.12.*unaffected6.18.51 to ≤ 6.18.*unaffected7.2.5 to ≤ 7.2.*unaffected7.3 to ≤ *unaffected
References
- https://git.kernel.org/stable/c/aaf76794b870b0f391eff339252a2e2e22f33a4a ↗
- https://git.kernel.org/stable/c/f7ff5adb63c1b277565afa54ccc0924d841b4a52 ↗
- https://git.kernel.org/stable/c/140ecbcbf978fbe60f83f8d4f8b1199029a5c763 ↗
- https://git.kernel.org/stable/c/ec82b0cf7f75fd95802592dcc9560fc7f529bba4 ↗
- https://git.kernel.org/stable/c/5deec890ecfa04d21cfa9bb9a2fe5e9dc98db5c5 ↗
- https://git.kernel.org/stable/c/bf3f49273d5bf6acbdad18ff44c01ffcf7a7a146 ↗
- https://git.kernel.org/stable/c/99cd62b9b1c818d6d01a87be9a8e5796314150a2 ↗
- https://git.kernel.org/stable/c/4e143d662ca94888b494b2427fc9e34494eb933a ↗