Answer in brief
CVE-2026-89893 records a Unknown severity vulnerability in media: cx23885: cancel NetUP CI work before teardown. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=c184dcd282337c09695a4c1761d7ac77fdc8fb7d <aaf76794b870b0f391eff339252a2e2e22f33a4a || >=c184dcd282337c09695a4c1761d7ac77fdc8fb7d <f7ff5adb63c1b277565afa54ccc0924d841b4a52 || >=c184dcd282337c09695a4c1761d7ac77fdc8fb7d <140ecbcbf978fbe60f83f8d4f8b1199029a5c763 || >=c184dcd282337c09695a4c1761d7ac77fdc8fb7d <ec82b0cf7f75fd95802592dcc9560fc7f529bba4 || >=c184dcd282337c09695a4c1761d7ac77fdc8fb7d <5deec890ecfa04d21cfa9bb9a2fe5e9dc98db5c5 || >=c184dcd282337c09695a4c1761d7ac77fdc8fb7d <bf3f49273d5bf6acbdad18ff44c01ffcf7a7a146 || >=c184dcd282337c09695a4c1761d7ac77fdc8fb7d <99cd62b9b1c818d6d01a87be9a8e5796314150a2 || >=c184dcd282337c09695a4c1761d7ac77fdc8fb7d <4e143d662ca94888b494b2427fc9e34494eb933a | aaf76794b870b0f391eff339252a2e2e22f33a4a, f7ff5adb63c1b277565afa54ccc0924d841b4a52, 140ecbcbf978fbe60f83f8d4f8b1199029a5c763, ec82b0cf7f75fd95802592dcc9560fc7f529bba4, 5deec890ecfa04d21cfa9bb9a2fe5e9dc98db5c5, bf3f49273d5bf6acbdad18ff44c01ffcf7a7a146, 99cd62b9b1c818d6d01a87be9a8e5796314150a2, 4e143d662ca94888b494b2427fc9e34494eb933a |
| Linux/Linuxgeneric | 2.6.30 | Not reported |
Published upstream
Sep 16, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Sep 16, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Sep 16, 2026
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.
Quoted source text, attributed separately from HOL analysis.