CVE-2026-89897 (CVSS 7.5)

Description

In the Linux kernel, the following vulnerability has been resolved: media: cec: Serialize exclusive follower delivery cec_receive_notify() reads the exclusive follower pointer without the adapter lock. Serialize the no-follower check and message delivery against mode changes and release.

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CVSS v3.1 Score

7.5

HIGH

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

EPSS — Exploit Prediction

0.0031

Probability of exploitation

0.22%

Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

References

Other References

https://git.kernel.org/stable/c/1924d0788caa6c66fd320dd4704fae99487fd2c7 https://git.kernel.org/stable/c/271e57a936dcdbaecb4b1bd005d9a285bbe60ab4 https://git.kernel.org/stable/c/4b532b271c91790b7ab661cd488a7ad36f5c4f6b https://git.kernel.org/stable/c/5c62095acc2a952099688774513c4a637bcdb2b5 https://git.kernel.org/stable/c/ae614f48712156fb0f55b207338d48d422c58bc0 https://git.kernel.org/stable/c/cac577854826950dda4d53569728b1da6c1425d5 https://git.kernel.org/stable/c/df941e6851da17fc53c7f6af2bdcc7383d17babc https://git.kernel.org/stable/c/efc829b4b937f98c4467bffe9243f756b7cfbf7f

Frequently Asked Questions

What is CVE-2026-89897? +

In the Linux kernel, the following vulnerability has been resolved: media: cec: Serialize exclusive follower delivery cec_receive_notify() reads the exclusive follower pointer without the adapter lock. Serialize the no-follower check and message delivery against mode changes and release. It has a CVSS v3.1 base score of 7.5 (HIGH).

How severe is CVE-2026-89897? +

CVE-2026-89897 has a CVSS v3.1 score of 7.5 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching. The EPSS score is 0.0031, placing it in the 0th percentile for exploitation probability.

How do I check if I'm vulnerable to CVE-2026-89897? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

CVE-2026-89897