What’s Vulnerable › Vulnerabilities

CVE-2026-89897: media: cec: Serialize exclusive follower delivery

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-09-16 · updated 2026-10-19

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.

Affected products

• Linux kernel: 4.8 — fixed in 7.3

How to fix

Upgrade to a fixed version: Linux kernel 7.3. Check the vendor advisory for mitigations.

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

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