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CVE-2026-89890

HIGHCVSS 7.8/10

Last modified

CVE-2026-89890 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. 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..

Description

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.

Metrics

CVSS 3.1
7.8/10

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected Software

Source: CNA advisory (CVE.org). NVD analysis pending.

VendorProductVersions
LinuxLinux>= d5d3a7cc127d096c22ad63c4ff72970e1beb22ef, < 1c57d1a3396b2d767d58f10dff09bb397586c714; >= d5d3a7cc127d096c22ad63c4ff72970e1beb22ef, < 9c4f9628b8558c87903492a777834cc5be14ded3; >= d5d3a7cc127d096c22ad63c4ff72970e1beb22ef, < b7a0de398ad510426db9c8e96c516ef7abf48b0e; >= d5d3a7cc127d096c22ad63c4ff72970e1beb22ef, < 1c9fdd9465211432d5c0ff70caaec0be245823d5; >= d5d3a7cc127d096c22ad63c4ff72970e1beb22ef, < 29fe4d38fb59ec28ca656cb2dabc2b0f78e78980; >= d5d3a7cc127d096c22ad63c4ff72970e1beb22ef, < 0745a59945d927652d892437f9647ed6e87c0677; >= d5d3a7cc127d096c22ad63c4ff72970e1beb22ef, < e6f1a1ac9b8ccabfec548aef0d0d93eaf4dba4f4; >= d5d3a7cc127d096c22ad63c4ff72970e1beb22ef, < 1bd456afeb8a515137e567967069fce6f8fcd23e
LinuxLinux3.10

References

Timeline

Published
Last Modified
Status
Received

Frequently Asked Questions

What is CVE-2026-89890?
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.
How severe is CVE-2026-89890?
CVE-2026-89890 has a CVSS score of 7.8/10 (HIGH severity).
How do I fix CVE-2026-89890?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

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Source: NVD / NIST