CVE-2026-89890 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-LINUX612-20506327
- published5 Oct 2026
- disclosed16 Sept 2026
Introduced: 16 Sep 2026
NewCVE-2026-89890 (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: go7007: defer the ALSA v4l2 put until card release
go7007_snd_init() already takes a v4l2_device reference for the ALSA side, but go7007_snd_remove() drops it immediately after calling snd_card_free_when_closed().
That is too early when a userspace process still has the capture PCM open. The ALSA card and its PCM callbacks remain alive until the last file is closed, so the release path can still reach struct go7007 through pcm->private_data and call go7007_snd_hw_free() after the V4L2 release path has freed the object.
Move the matching v4l2_device_put() to the ALSA card private_free callback so the existing ALSA reference covers the whole deferred card lifetime.
References
- https://security-tracker.debian.org/tracker/CVE-2026-89890
- https://git.kernel.org/stable/c/0745a59945d927652d892437f9647ed6e87c0677
- https://git.kernel.org/stable/c/1bd456afeb8a515137e567967069fce6f8fcd23e
- https://git.kernel.org/stable/c/1c57d1a3396b2d767d58f10dff09bb397586c714
- https://git.kernel.org/stable/c/1c9fdd9465211432d5c0ff70caaec0be245823d5
- https://git.kernel.org/stable/c/29fe4d38fb59ec28ca656cb2dabc2b0f78e78980
- https://git.kernel.org/stable/c/9c4f9628b8558c87903492a777834cc5be14ded3
- https://git.kernel.org/stable/c/b7a0de398ad510426db9c8e96c516ef7abf48b0e
- https://git.kernel.org/stable/c/e6f1a1ac9b8ccabfec548aef0d0d93eaf4dba4f4