---
title: "CVE-2026-89897: Linux kernel - Race Condition"
description: "Linux kernel contains a race condition in media: cec component caused by unsynchronized access to exclusive follower pointer in cec_receive_notify(), letting attackers cause inconsistent state or denial of service, exploit requires concurrent access to CEC adapter."
url: https://panop.io/threat-heartbeat/CVE-2026-89897/
---

# CVE-2026-89897 Linux kernel - Race Condition

Linux kernel contains a race condition in media: cec component caused by unsynchronized access to exclusive follower pointer in cec\_receive\_notify(), letting attackers cause inconsistent state or denial of service, exploit requires concurrent access to CEC adapter.

CVSS base score 7.5 /10

High

CISA KEV

Not listed

Public exploit

None known

EPSS

0.31% chance of exploitation in 30 days

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-89897)

## Details

Type

Race Condition

Impact

Denial Of Service

CVSS vector

CVSS:3.1/AV:A/AC:H/PR:N/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 with the fix applied.

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-2026-89897](https://nvd.nist.gov/vuln/detail/CVE-2026-89897)
- [https://git.kernel.org/stable/c/df941e6851da17fc53c7f6af2bdcc7383d17babc](https://git.kernel.org/stable/c/df941e6851da17fc53c7f6af2bdcc7383d17babc)
- [https://git.kernel.org/stable/c/efc829b4b937f98c4467bffe9243f756b7cfbf7f](https://git.kernel.org/stable/c/efc829b4b937f98c4467bffe9243f756b7cfbf7f)
- [https://git.kernel.org/stable/c/1924d0788caa6c66fd320dd4704fae99487fd2c7](https://git.kernel.org/stable/c/1924d0788caa6c66fd320dd4704fae99487fd2c7)
- [https://git.kernel.org/stable/c/271e57a936dcdbaecb4b1bd005d9a285bbe60ab4](https://git.kernel.org/stable/c/271e57a936dcdbaecb4b1bd005d9a285bbe60ab4)
- [https://git.kernel.org/stable/c/4b532b271c91790b7ab661cd488a7ad36f5c4f6b](https://git.kernel.org/stable/c/4b532b271c91790b7ab661cd488a7ad36f5c4f6b)
- [https://git.kernel.org/stable/c/5c62095acc2a952099688774513c4a637bcdb2b5](https://git.kernel.org/stable/c/5c62095acc2a952099688774513c4a637bcdb2b5)
- [https://git.kernel.org/stable/c/ae614f48712156fb0f55b207338d48d422c58bc0](https://git.kernel.org/stable/c/ae614f48712156fb0f55b207338d48d422c58bc0)
- [https://git.kernel.org/stable/c/cac577854826950dda4d53569728b1da6c1425d5](https://git.kernel.org/stable/c/cac577854826950dda4d53569728b1da6c1425d5)

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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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