CVE-2026-89893

CVE CVE-2026-89893EUVD EUVD-2026-80493Published 2026-09-16T10:31:55.000ZLast changed 2026-09-16T14:39:43.000ZCVSS 7.8

What the advisory describes

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.

Source: EUVD (ENISA), in the words of the advisory.

Products the advisory names

These come from the advisory itself, not from any check we performed.

Linux — Linux patch: 5.15.221; 2.6.30; c184dcd282337c09695a4c1761d7ac77fdc8fb7d <aaf76794b870b0f391eff339252a2e2e22f33a4a; patch: 0; c184dcd282337c09695a4c1761d7ac77fdc8fb7d <140ecbcbf978fbe60f83f8d4f8b1199029a5c763; c184dcd282337c09695a4c1761d7ac77fdc8fb7d <f7ff5adb63c1b277565afa54ccc0924d841b4a52; patch: 6.12.110; c184dcd282337c09695a4c1761d7ac77fdc8fb7d <5deec890ecfa04d21cfa9bb9a2fe5e9dc98db5c5; patch: 7.3-rc1; patch: 6.18.51; c184dcd282337c09695a4c1761d7ac77fdc8fb7d <4e143d662ca94888b494b2427fc9e34494eb933a; patch: 6.6.157; patch: 6.1.188; c184dcd282337c09695a4c1761d7ac77fdc8fb7d <bf3f49273d5bf6acbdad18ff44c01ffcf7a7a146; c184dcd282337c09695a4c1761d7ac77fdc8fb7d <99cd62b9b1c818d6d01a87be9a8e5796314150a2; c184dcd282337c09695a4c1761d7ac77fdc8fb7d <ec82b0cf7f75fd95802592dcc9560fc7f529bba4; patch: 7.2.5; patch: 5.10.270

The versions shown are the advisory's own. Patchlage compares no version numbers and derives no judgement from them — which version is installed is something a person has to look up.

Carried in the product catalogue

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Linux — Linux

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