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CVE-2026-89887

7.8 · HIGH

In the Linux kernel, the following vulnerability has been resolved: media: i2c: ov7740: fix use-after-destroy in remove The ov7740_remove() function had a severe teardown order bug where it destr…

Published Sep 16, 2026EPSS 0.17%

Overview

CVE-2026-89887 is a high-severity vulnerability. It was published on September 16, 2026 and has a CVSS 3.1 base score of 7.8 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.8, rated HIGH. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

Technical description

In the Linux kernel, the following vulnerability has been resolved:

media: i2c: ov7740: fix use-after-destroy in remove

The ov7740_remove() function had a severe teardown order bug where it

destroyed the driver's mutex before freeing the V4L2 control handler

which relies on that mutex, leading to a use-after-destroy kernel panic.

Furthermore, the driver explicitly called v4l2_ctrl_handler_free() and

mutex_destroy() sequentially, but then called ov7740_free_controls()

which invokes both of them a second time, resulting in a double-free.

This patch fixes the issue by unregistering the subdevice first, and

relying exclusively on ov7740_free_controls() to safely tear down the

mutex and control handler in the correct order.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refgit.kernel.org/stable/c/09453b467990e8ef8fe09f45a685f9a625248d33Refgit.kernel.org/stable/c/25e2505866c577db2661e4d431f0907c6ec9a3b4Refgit.kernel.org/stable/c/5d1b3dea5a44124bab6c14a2d71b977dabed54e7Refgit.kernel.org/stable/c/7512838a19af0a284a58435292243fad21e57ff1Refgit.kernel.org/stable/c/81e9765878d3ac8ad18e3a683332b5d6bc3a0e33Refgit.kernel.org/stable/c/8a02ee6c1c4e88f3a0442bd60d3c77db9a30db5eRefgit.kernel.org/stable/c/9e4693436c7dcf8584002500ce4b434b79bbf9edRefgit.kernel.org/stable/c/af81f35e4f429e769b784754e1aa4d7a922470ac

How CyberStrike helps

Frequently asked questions

What is CVE-2026-89887?

CVE-2026-89887 is a high-severity vulnerability. It was published on September 16, 2026 and has a CVSS 3.1 base score of 7.8 (HIGH).

How severe is CVE-2026-89887?

This vulnerability has a CVSS 3.1 base score of 7.8, rated HIGH. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2026-89887?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2026-89887?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-89887 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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