CVE-2026-89893 Affecting linux-6.12 package, versions <6.12.111-1~deb12u1
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-DEBIAN12-LINUX612-20507204
- published5 Oct 2026
- disclosed16 Sept 2026
Introduced: 16 Sep 2026
NewCVE-2026-89893 (opens in a new tab)How to fix?
Upgrade Debian:12 linux-6.12 to version 6.12.111-1~deb12u1 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream linux-6.12 package and not the linux-6.12 package as distributed by Debian.
See How to fix? for Debian:12 relevant fixed versions and status.
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.
References
- https://security-tracker.debian.org/tracker/CVE-2026-89893
- https://git.kernel.org/stable/c/140ecbcbf978fbe60f83f8d4f8b1199029a5c763
- https://git.kernel.org/stable/c/4e143d662ca94888b494b2427fc9e34494eb933a
- https://git.kernel.org/stable/c/5deec890ecfa04d21cfa9bb9a2fe5e9dc98db5c5
- https://git.kernel.org/stable/c/99cd62b9b1c818d6d01a87be9a8e5796314150a2
- https://git.kernel.org/stable/c/aaf76794b870b0f391eff339252a2e2e22f33a4a
- https://git.kernel.org/stable/c/bf3f49273d5bf6acbdad18ff44c01ffcf7a7a146
- https://git.kernel.org/stable/c/ec82b0cf7f75fd95802592dcc9560fc7f529bba4
- https://git.kernel.org/stable/c/f7ff5adb63c1b277565afa54ccc0924d841b4a52