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CVE-2026-89888

7.8 · HIGH

In the Linux kernel, the following vulnerability has been resolved: media: i2c: ov02a10: fix endpoint parsing use-after-free The ov02a10_check_hwcfg() function calls fwnode_handle_put(ep) immedia…

Published Sep 16, 2026EPSS 0.16%

Overview

CVE-2026-89888 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: ov02a10: fix endpoint parsing use-after-free

The ov02a10_check_hwcfg() function calls fwnode_handle_put(ep)

immediately after allocating and parsing the endpoint. However, it

subsequently calls fwnode_property_read_u32() using the same 'ep'

handle, leading to a potential use-after-free.

Additionally, reading the optional 'ovti,mipi-clock-voltage' property

used to overwrite the 'ret' variable. If the property was missing,

'ret' would become negative, and this failure code would be incorrectly

returned at the end of the function, causing probe to fail entirely.

Fix the use-after-free by moving fwnode_property_read_u32() before

the endpoint is parsed and freed. Avoid the error leak by not

assigning the result of fwnode_property_read_u32() to 'ret'.

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/213b2489130357c8d3e8d4fb2bdab88791ce3185Refgit.kernel.org/stable/c/4c2988bf1ad2753240a38db10ce23e87ec542f8fRefgit.kernel.org/stable/c/6e13784452785cd8402b228bea53bc6a027ade84Refgit.kernel.org/stable/c/8ddb3b69f67b0632ff3830da18de3e8dcaf5884bRefgit.kernel.org/stable/c/90f9b421fc6d4f2edab7521efdb1e58571468d33Refgit.kernel.org/stable/c/94971ba0592ca77ec99b292226a4b398763315b8Refgit.kernel.org/stable/c/9de48ba68f56de9fe20ebd3f9728d22af25f9a91

How CyberStrike helps

Frequently asked questions

What is CVE-2026-89888?

CVE-2026-89888 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-2026-89888?

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-2026-89888?

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-2026-89888?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-89888 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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