CVE-2026-89890

Kernel use-after-free via premature V4L2 reference release

Published Sep 16, 2026 · Updated Sep 16, 2026

Use-after-free in the Linux go7007 media driver allows local users to reach freed kernel memory through an ALSA PCM callback. The go7007_snd_remove() path drops its V4L2 reference after scheduling deferred ALSA card release, while a retained pcm->private_data pointer can later reach go7007_snd_hw_free() after the object is freed. The flaw requires go7007 capture hardware, an open PCM stream, and device removal before stream closure; no further impact is publicly established.

CVSS severityUnavailable
Unscored
EPSS probabilityUnavailable
No score available in this record
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

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Summary

What happened

Use-after-free in the Linux go7007 media driver allows local users to reach freed kernel memory through an ALSA PCM callback. The go7007_snd_remove() path drops its V4L2 reference after scheduling deferred ALSA card release, while a retained pcm->private_data pointer can later reach go7007_snd_hw_free() after the object is freed. The flaw requires go7007 capture hardware, an open PCM stream, and device removal before stream closure; no further impact is publicly established.

The record

CVE
CVE-2026-89890
Published
Sep 16, 2026
Updated
Sep 16, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
Unavailable
Attack vector
local
Privileges
Unavailable

Timeline

How it unfolded

  1. Sep 16, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 16, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=3.10
  2. Affected versionversion=d5d3a7cc127d096c22ad63c4ff72970e1beb22ef <0745a59945d927652d892437f9647ed6e87c0677
  3. Affected versionversion=d5d3a7cc127d096c22ad63c4ff72970e1beb22ef <1bd456afeb8a515137e567967069fce6f8fcd23e
  4. Affected versionversion=d5d3a7cc127d096c22ad63c4ff72970e1beb22ef <1c57d1a3396b2d767d58f10dff09bb397586c714
  5. Affected versionversion=d5d3a7cc127d096c22ad63c4ff72970e1beb22ef <1c9fdd9465211432d5c0ff70caaec0be245823d5
  6. Affected versionversion=d5d3a7cc127d096c22ad63c4ff72970e1beb22ef <29fe4d38fb59ec28ca656cb2dabc2b0f78e78980
  7. Affected versionversion=d5d3a7cc127d096c22ad63c4ff72970e1beb22ef <9c4f9628b8558c87903492a777834cc5be14ded3
  8. Affected versionversion=d5d3a7cc127d096c22ad63c4ff72970e1beb22ef <b7a0de398ad510426db9c8e96c516ef7abf48b0e
  9. Affected versionversion=d5d3a7cc127d096c22ad63c4ff72970e1beb22ef <e6f1a1ac9b8ccabfec548aef0d0d93eaf4dba4f4

What conditions does exploitation require?

Attack vectorlocal
Required privilegesUnavailable in this record.

What is affected?

The Linux Kernel Organization · Linuxversion=3.10; version=d5d3a7cc127d096c22ad63c4ff72970e1beb22ef <0745a59945d927652d892437f9647ed6e87c0677; version=d5d3a7cc127d096c22ad63c4ff72970e1beb22ef <1bd456afeb8a515137e567967069fce6f8fcd23e; version=d5d3a7cc127d096c22ad63c4ff72970e1beb22ef <1c57d1a3396b2d767d58f10dff09bb397586c714; version=d5d3a7cc127d096c22ad63c4ff72970e1beb22ef <1c9fdd9465211432d5c0ff70caaec0be245823d5; version=d5d3a7cc127d096c22ad63c4ff72970e1beb22ef <29fe4d38fb59ec28ca656cb2dabc2b0f78e78980; version=d5d3a7cc127d096c22ad63c4ff72970e1beb22ef <9c4f9628b8558c87903492a777834cc5be14ded3; version=d5d3a7cc127d096c22ad63c4ff72970e1beb22ef <b7a0de398ad510426db9c8e96c516ef7abf48b0e; version=d5d3a7cc127d096c22ad63c4ff72970e1beb22ef <e6f1a1ac9b8ccabfec548aef0d0d93eaf4dba4f4

Published CVSS scores

No CVSS assessment is available in this record.

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

No sourced classifications are available.

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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