CVE-2026-89887Hinoki check available

Kernel crash via duplicated ov7740 control teardown

Published Sep 16, 2026 · Updated Sep 16, 2026

Use-after-destroy in the Linux ov7740 camera driver allows attackers to crash the kernel during device removal. The ov7740_remove() path destroys the mutex and frees the V4L2 control handler before ov7740_free_controls() repeats both operations, leaving cleanup code to use a destroyed lock and double-free resources. The trigger is teardown of an ov7740 device; the documented consequence is a kernel panic, with no published unprivileged or remote path.

CVSS severityUnavailable
Unscored
EPSS probabilityUnavailable
No score available in this record
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Use-after-destroy in the Linux ov7740 camera driver allows attackers to crash the kernel during device removal. The ov7740_remove() path destroys the mutex and frees the V4L2 control handler before ov7740_free_controls() repeats both operations, leaving cleanup code to use a destroyed lock and double-free resources. The trigger is teardown of an ov7740 device; the documented consequence is a kernel panic, with no published unprivileged or remote path.

The record

CVE
CVE-2026-89887
Published
Sep 16, 2026
Updated
Sep 16, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1499
Attack vector
Unavailable
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?

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  1. Affected versionversion=39c5c4471b8d793daf868bd004e56ed420e89707 <09453b467990e8ef8fe09f45a685f9a625248d33
  2. Affected versionversion=39c5c4471b8d793daf868bd004e56ed420e89707 <25e2505866c577db2661e4d431f0907c6ec9a3b4
  3. Affected versionversion=39c5c4471b8d793daf868bd004e56ed420e89707 <5d1b3dea5a44124bab6c14a2d71b977dabed54e7
  4. Affected versionversion=39c5c4471b8d793daf868bd004e56ed420e89707 <7512838a19af0a284a58435292243fad21e57ff1
  5. Affected versionversion=39c5c4471b8d793daf868bd004e56ed420e89707 <81e9765878d3ac8ad18e3a683332b5d6bc3a0e33
  6. Affected versionversion=39c5c4471b8d793daf868bd004e56ed420e89707 <8a02ee6c1c4e88f3a0442bd60d3c77db9a30db5e
  7. Affected versionversion=39c5c4471b8d793daf868bd004e56ed420e89707 <9e4693436c7dcf8584002500ce4b434b79bbf9ed
  8. Affected versionversion=39c5c4471b8d793daf868bd004e56ed420e89707 <af81f35e4f429e769b784754e1aa4d7a922470ac
  9. Affected versionversion=4.16

What conditions does exploitation require?

Attack vectorUnavailable in this record.
Required privilegesUnavailable in this record.

What is affected?

The Linux Kernel Organization · Linuxversion=39c5c4471b8d793daf868bd004e56ed420e89707 <09453b467990e8ef8fe09f45a685f9a625248d33; version=39c5c4471b8d793daf868bd004e56ed420e89707 <25e2505866c577db2661e4d431f0907c6ec9a3b4; version=39c5c4471b8d793daf868bd004e56ed420e89707 <5d1b3dea5a44124bab6c14a2d71b977dabed54e7; version=39c5c4471b8d793daf868bd004e56ed420e89707 <7512838a19af0a284a58435292243fad21e57ff1; version=39c5c4471b8d793daf868bd004e56ed420e89707 <81e9765878d3ac8ad18e3a683332b5d6bc3a0e33; version=39c5c4471b8d793daf868bd004e56ed420e89707 <8a02ee6c1c4e88f3a0442bd60d3c77db9a30db5e; version=39c5c4471b8d793daf868bd004e56ed420e89707 <9e4693436c7dcf8584002500ce4b434b79bbf9ed; version=39c5c4471b8d793daf868bd004e56ed420e89707 <af81f35e4f429e769b784754e1aa4d7a922470ac; version=4.16

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

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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)
VectorUnavailable
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1499Endpoint Denial of Service

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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