---
title: "CVE-2026-90032: Linux Kernel usbtv - Use After Free"
description: "Linux kernel media usbtv contains a use-after-free vulnerability caused by premature freeing of struct usbtv during USB disconnect, letting attackers cause memory corruption, exploit requires open ALSA PCM file during disconnect."
url: https://panop.io/threat-heartbeat/CVE-2026-90032/
---

# CVE-2026-90032 Linux Kernel usbtv - Use After Free

Linux kernel media usbtv contains a use-after-free vulnerability caused by premature freeing of struct usbtv during USB disconnect, letting attackers cause memory corruption, exploit requires open ALSA PCM file during disconnect.

CVSS base score 7.8 /10

High

CISA KEV

Not listed

Public exploit

None known

Authentication

Required

EPSS

0.15% chance of exploitation in 30 days

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-90032)

## Details

Type

Use After Free

Impact

Use After Free, Denial Of Service

CVSS vector

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

Published

16 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-2026-90032](https://nvd.nist.gov/vuln/detail/CVE-2026-90032)
- [https://git.kernel.org/stable/c/7690a86b193271322cd31ab77349a87aa10858e4](https://git.kernel.org/stable/c/7690a86b193271322cd31ab77349a87aa10858e4)
- [https://git.kernel.org/stable/c/97b5e8b22b98e287481a97a9a4cfebbb348738a5](https://git.kernel.org/stable/c/97b5e8b22b98e287481a97a9a4cfebbb348738a5)
- [https://git.kernel.org/stable/c/be0f7745f883386e5263b4e475686a81dfa87175](https://git.kernel.org/stable/c/be0f7745f883386e5263b4e475686a81dfa87175)
- [https://git.kernel.org/stable/c/fc530fe168bb2b745a93f553ad21fc25fd9cba3d](https://git.kernel.org/stable/c/fc530fe168bb2b745a93f553ad21fc25fd9cba3d)
- [https://git.kernel.org/stable/c/1618257cb0aba4ce342ae8c0228368c24161f5fb](https://git.kernel.org/stable/c/1618257cb0aba4ce342ae8c0228368c24161f5fb)
- [https://git.kernel.org/stable/c/239d1683e08b2aee2a15ef35706e1ea9a76681d8](https://git.kernel.org/stable/c/239d1683e08b2aee2a15ef35706e1ea9a76681d8)
- [https://git.kernel.org/stable/c/503be26ff888cb3576e55d251895d290e8146f27](https://git.kernel.org/stable/c/503be26ff888cb3576e55d251895d290e8146f27)
- [https://git.kernel.org/stable/c/67374e3a00814dcdd46e9feca61f69f7f2d81957](https://git.kernel.org/stable/c/67374e3a00814dcdd46e9feca61f69f7f2d81957)

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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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