---
title: "CVE-2026-89733: Linux kernel usb gadget uvc - Use After Free"
description: "Linux kernel usb gadget uvc contains a use-after-free caused by dangling pointers in uvc_function_bind() and uvc_function_unbind(), letting attackers potentially cause memory corruption, exploit requires local code execution."
url: https://panop.io/threat-heartbeat/CVE-2026-89733/
---

# CVE-2026-89733 Linux kernel usb gadget uvc - Use After Free

Linux kernel usb gadget uvc contains a use-after-free caused by dangling pointers in uvc\_function\_bind() and uvc\_function\_unbind(), letting attackers potentially cause memory corruption, exploit requires local code execution.

CVSS base score 7.8 /10

High

CISA KEV

Not listed

Public exploit

None known

Authentication

Required

EPSS

0.17% chance of exploitation in 30 days

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-89733)

## Details

Type

Use After Free

Impact

Remote Code Execution

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Published

11 September 2026

Updated

15 October 2026

## Vendor fix

Update to the latest Linux kernel version containing the fix.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

## References

- [https://nvd.nist.gov/vuln/detail/CVE-2026-89733](https://nvd.nist.gov/vuln/detail/CVE-2026-89733)
- [https://git.kernel.org/stable/c/9897b7da8c0ad8356c1b8649379fcb5a689462cb](https://git.kernel.org/stable/c/9897b7da8c0ad8356c1b8649379fcb5a689462cb)
- [https://git.kernel.org/stable/c/bdab5605259ba5d6ff927c1a85cc83eb3ecfdacc](https://git.kernel.org/stable/c/bdab5605259ba5d6ff927c1a85cc83eb3ecfdacc)
- [https://git.kernel.org/stable/c/502a7f5b79b7ba751988789e982924f8f496129f](https://git.kernel.org/stable/c/502a7f5b79b7ba751988789e982924f8f496129f)
- [https://git.kernel.org/stable/c/85dd5e8bd6776d02854f2847d83429f1f712e99c](https://git.kernel.org/stable/c/85dd5e8bd6776d02854f2847d83429f1f712e99c)
- [https://git.kernel.org/stable/c/bec7708eb3b5295d12e931db24381b7c94c72953](https://git.kernel.org/stable/c/bec7708eb3b5295d12e931db24381b7c94c72953)
- [https://git.kernel.org/stable/c/ddb1b0d5d858584ed0d3a5aaa042ee693998c7e2](https://git.kernel.org/stable/c/ddb1b0d5d858584ed0d3a5aaa042ee693998c7e2)
- [https://git.kernel.org/stable/c/38f822ddce9355893d734279a26ddec45182197e](https://git.kernel.org/stable/c/38f822ddce9355893d734279a26ddec45182197e)
- [https://git.kernel.org/stable/c/8e88ed8a374de67270d38689f2a81018909cafbb](https://git.kernel.org/stable/c/8e88ed8a374de67270d38689f2a81018909cafbb)

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## What this record can't tell you

- Whether you run the affected software, and where
- Whether an attacker can actually reach and exploit it
- The misconfigurations that never get a CVE number
- What it would cost the business, ranked into what to fix first

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