# CVE-2026-89888: media: i2c: ov02a10: fix endpoint parsing use-after-free

> A use-after-free vulnerability in the Linux kernel's ov02a10 camera driver allows attackers to cause denial of service or potentially execute code.

- **Severity:** High 7.8 (`CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 16 Sep 2026
- **Updated:** 19 Oct 2026
- **Also known as:** AZL-101361, BELL-CVE-2026-89888, DEBIAN-CVE-2026-89888, GHSA-4c55-f2c6-f257, UBUNTU-CVE-2026-89888

## What is CVE-2026-89888?

CVE-2026-89888 is a high-severity use after free vulnerability in Linux, published on 16 Sep 2026. It can only be exploited from the same machine or local network, with no action from the victim.

### Official 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'.

## Which versions are affected by CVE-2026-89888?


## How do I fix CVE-2026-89888?

Apply the vendor's patch.

## Is CVE-2026-89888 being exploited?

There is no known exploitation of CVE-2026-89888 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-89888 and fix it if it is affected.

What it is: CVE-2026-89888 is a high-severity use after free vulnerability in Linux, published on 16 Sep 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2026-89888 in the wild and no public exploit code.

Affected product: Linux. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2026-89888/ (Markdown: https://insights.sbomify.com/CVE-2026-89888/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-89888
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-89888
- OSV: https://osv.dev/vulnerability/CVE-2026-89888

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-89888/
Summaries are generated and may contain mistakes; the official description above is the record.