CVE-2026-89897

media: cec: Serialize exclusive follower delivery

State: Published
Severity: 7.5 High
Published: Sep 16, 2026
Updated: Oct 19, 2026
Reserved: Sep 11, 2026

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.

Scores

CVSS	Score	Vector	Source
3.1	7.5 High	CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H	Linux

Weaknesses

The record names no weakness.

Affected Products

Product	Versions
LinuxLinux	9881fe0ca187c213eb3a6a8e78e45ad4d1cec171 to before efc829b4b937f98c4467bffe9243f756b7cfbf7fAffected 9881fe0ca187c213eb3a6a8e78e45ad4d1cec171 to before cac577854826950dda4d53569728b1da6c1425d5Affected 9881fe0ca187c213eb3a6a8e78e45ad4d1cec171 to before 4b532b271c91790b7ab661cd488a7ad36f5c4f6bAffected 9881fe0ca187c213eb3a6a8e78e45ad4d1cec171 to before 271e57a936dcdbaecb4b1bd005d9a285bbe60ab4Affected 9881fe0ca187c213eb3a6a8e78e45ad4d1cec171 to before df941e6851da17fc53c7f6af2bdcc7383d17babcAffected 9881fe0ca187c213eb3a6a8e78e45ad4d1cec171 to before 5c62095acc2a952099688774513c4a637bcdb2b5Affected 9881fe0ca187c213eb3a6a8e78e45ad4d1cec171 to before ae614f48712156fb0f55b207338d48d422c58bc0Affected 9881fe0ca187c213eb3a6a8e78e45ad4d1cec171 to before 1924d0788caa6c66fd320dd4704fae99487fd2c7Affected
LinuxLinux	4.8Affected before 4.8Not affected 5.10.270 through 5.10.Not affected 5.15.221 through 5.15.Not affected 6.1.188 through 6.1.Not affected 6.6.157 through 6.6.Not affected 6.12.110 through 6.12.Not affected 6.18.51 through 6.18.Not affected 7.2.5 through 7.2.*Not affected 7.3 and laterNot affected

Product

Versions

LinuxLinux

9881fe0ca187c213eb3a6a8e78e45ad4d1cec171 to before efc829b4b937f98c4467bffe9243f756b7cfbf7fAffected
9881fe0ca187c213eb3a6a8e78e45ad4d1cec171 to before cac577854826950dda4d53569728b1da6c1425d5Affected
9881fe0ca187c213eb3a6a8e78e45ad4d1cec171 to before 4b532b271c91790b7ab661cd488a7ad36f5c4f6bAffected
9881fe0ca187c213eb3a6a8e78e45ad4d1cec171 to before 271e57a936dcdbaecb4b1bd005d9a285bbe60ab4Affected
9881fe0ca187c213eb3a6a8e78e45ad4d1cec171 to before df941e6851da17fc53c7f6af2bdcc7383d17babcAffected
9881fe0ca187c213eb3a6a8e78e45ad4d1cec171 to before 5c62095acc2a952099688774513c4a637bcdb2b5Affected
9881fe0ca187c213eb3a6a8e78e45ad4d1cec171 to before ae614f48712156fb0f55b207338d48d422c58bc0Affected
9881fe0ca187c213eb3a6a8e78e45ad4d1cec171 to before 1924d0788caa6c66fd320dd4704fae99487fd2c7Affected

LinuxLinux

4.8Affected
before 4.8Not affected
5.10.270 through 5.10.*Not affected
5.15.221 through 5.15.*Not affected
6.1.188 through 6.1.*Not affected
6.6.157 through 6.6.*Not affected
6.12.110 through 6.12.*Not affected
6.18.51 through 6.18.*Not affected
7.2.5 through 7.2.*Not affected
7.3 and laterNot affected

References

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