Description (CNA)
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 (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected c184dcd282337c09695a4c1761d7ac77fdc8fb7d before aaf76794b870b0f391eff339252a2e2e22f33a4a; affected c184dcd282337c09695a4c1761d7ac77fdc8fb7d before f7ff5adb63c1b277565afa54ccc0924d841b4a52; affected c184dcd282337c09695a4c1761d7ac77fdc8fb7d before 140ecbcbf978fbe60f83f8d4f8b1199029a5c763; affected c184dcd282337c09695a4c1761d7ac77fdc8fb7d before ec82b0cf7f75fd95802592dcc9560fc7f529bba4; affected c184dcd282337c09695a4c1761d7ac77fdc8fb7d before 5deec890ecfa04d21cfa9bb9a2fe5e9dc98db5c5; affected c184dcd282337c09695a4c1761d7ac77fdc8fb7d before bf3f49273d5bf6acbdad18ff44c01ffcf7a7a146; affected c184dcd282337c09695a4c1761d7ac77fdc8fb7d before 99cd62b9b1c818d6d01a87be9a8e5796314150a2; affected c184dcd282337c09695a4c1761d7ac77fdc8fb7d before 4e143d662ca94888b494b2427fc9e34494eb933a |
| Linux / Linux | affected 2.6.30; unaffected 0 before 2.6.30; unaffected 5.10.270 through 5.10.*; unaffected 5.15.221 through 5.15.*; unaffected 6.1.188 through 6.1.*; unaffected 6.6.157 through 6.6.*; unaffected 6.12.110 through 6.12.*; unaffected 6.18.51 through 6.18.*; unaffected 7.2.5 through 7.2.*; unaffected 7.3 through * |
CWE
No CWE identifiers supplied.
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