Linux Kernel up to 7.2.4 go7007 go7007_snd_hw_free use after free

CVSS Meta Temp Score
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CTI Interest Score
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8.4$0-$5k0.00

Summaryinfo

A vulnerability categorized as very critical has been discovered in Linux Kernel up to 7.2.4. This issue affects the function go7007_snd_hw_free of the component go7007. Such manipulation leads to use after free. This vulnerability is listed as CVE-2026-89890. The attack must be carried out locally. There is no available exploit. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability was found in Linux Kernel up to 7.2.4. It has been rated as very critical. Affected by this issue is the function go7007_snd_hw_free of the component go7007. The manipulation with an unknown input leads to a use after free vulnerability. Using CWE to declare the problem leads to CWE-416. Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code. Impacted is confidentiality, integrity, and availability. CVE summarizes:

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.

The advisory is shared for download at git.kernel.org. This vulnerability is handled as CVE-2026-89890 since 09/11/2026. The exploitation is known to be easy. The attack needs to be approached locally. There are known technical details, but no exploit is available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 09/16/2026).

Upgrading to version 5.10.270, 5.15.221, 6.1.188, 6.6.157, 6.12.110, 6.18.51, 7.2.5 or 7.3-rc1 eliminates this vulnerability. Applying the patch 1c57d1a3396b2d767d58f10dff09bb397586c714/9c4f9628b8558c87903492a777834cc5be14ded3/b7a0de398ad510426db9c8e96c516ef7abf48b0e/1c9fdd9465211432d5c0ff70caaec0be245823d5/29fe4d38fb59ec28ca656cb2dabc2b0f78e78980/0745a59945d927652d892437f9647ed6e87c0677/e6f1a1ac9b8ccabfec548aef0d0d93eaf4dba4f4/1bd456afeb8a515137e567967069fce6f8fcd23e is able to eliminate this problem. The best possible mitigation is suggested to be upgrading to the latest version.

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Productinfo

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Vendor

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Version

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Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.8
VulDB Meta Temp Score: 8.4

VulDB Base Score: 8.8
VulDB Temp Score: 8.4
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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💳💳💳💳💳💳
💳💳💳💳💳💳
VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Use after free
CWE: CWE-416 / CWE-119
CAPEC: 🔒
ATT&CK: 🔒

Physical: Partially
Local: Yes
Remote: No

Availability: 🔒
Status: Not defined
Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Kernel 5.10.270/5.15.221/6.1.188/6.6.157/6.12.110/6.18.51/7.2.5/7.3-rc1
Patch: 1c57d1a3396b2d767d58f10dff09bb397586c714/9c4f9628b8558c87903492a777834cc5be14ded3/b7a0de398ad510426db9c8e96c516ef7abf48b0e/1c9fdd9465211432d5c0ff70caaec0be245823d5/29fe4d38fb59ec28ca656cb2dabc2b0f78e78980/0745a59945d927652d892437f9647ed6e87c0677/e6f1a1ac9b8ccabfec548aef0d0d93eaf4dba4f4/1bd456afeb8a515137e567967069fce6f8fcd23e

Timelineinfo

09/11/2026 CVE reserved
09/16/2026 +5 days Advisory disclosed
09/16/2026 +0 days VulDB entry created
09/16/2026 +0 days VulDB entry last update

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed

CVE: CVE-2026-89890 (🔒)
GCVE (CVE): GCVE-0-2026-89890
GCVE (VulDB): GCVE-100-405728

Entryinfo

Created: 09/16/2026 14:17
Changes: 09/16/2026 14:17 (59)
Complete: 🔍
Cache ID: 216::103

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