{"id":"CVE-2026-89897","title":"In the Linux kernel, the following vulnerability has been resolved:\n\nmedia: cec: Serialize exclusive follower delivery\n\ncec_receive_notify() reads the exclusive follower pointer without the\nadapter lock","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\nmedia: cec: Serialize exclusive follower delivery\n\ncec_receive_notify() reads the exclusive follower pointer without the\nadapter lock. Serialize the no-follower check a…","severity":"high","cvss":7.5,"cvssVector":"CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","vendor":"Linux","product":"Linux","affected":["Linux >= 9881fe0ca187c213eb3a6a8e78e45ad4d1cec171 < efc829b4b937f98c4467bffe9243f756b7cfbf7f","Linux >= 9881fe0ca187c213eb3a6a8e78e45ad4d1cec171 < cac577854826950dda4d53569728b1da6c1425d5","Linux >= 9881fe0ca187c213eb3a6a8e78e45ad4d1cec171 < 4b532b271c91790b7ab661cd488a7ad36f5c4f6b","Linux >= 9881fe0ca187c213eb3a6a8e78e45ad4d1cec171 < 271e57a936dcdbaecb4b1bd005d9a285bbe60ab4","Linux >= 9881fe0ca187c213eb3a6a8e78e45ad4d1cec171 < df941e6851da17fc53c7f6af2bdcc7383d17babc","Linux >= 9881fe0ca187c213eb3a6a8e78e45ad4d1cec171 < 5c62095acc2a952099688774513c4a637bcdb2b5","Linux >= 9881fe0ca187c213eb3a6a8e78e45ad4d1cec171 < ae614f48712156fb0f55b207338d48d422c58bc0","Linux >= 9881fe0ca187c213eb3a6a8e78e45ad4d1cec171 < 1924d0788caa6c66fd320dd4704fae99487fd2c7","Linux 4.8"],"published":"2026-09-16","updated":"2026-09-16","sourceUpdated":"2026-09-16T15:18:15.943","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-89897","references":[{"url":"https://git.kernel.org/stable/c/1924d0788caa6c66fd320dd4704fae99487fd2c7","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/271e57a936dcdbaecb4b1bd005d9a285bbe60ab4","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/4b532b271c91790b7ab661cd488a7ad36f5c4f6b","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/5c62095acc2a952099688774513c4a637bcdb2b5","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/ae614f48712156fb0f55b207338d48d422c58bc0","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/cac577854826950dda4d53569728b1da6c1425d5","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/df941e6851da17fc53c7f6af2bdcc7383d17babc","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/efc829b4b937f98c4467bffe9243f756b7cfbf7f","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-89897.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-89897"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2535123"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-89897"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-89897"},{"url":"https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-89897.mbox"},{"url":"https://kernelcve.org/list/?q=CVE-2026-89897"}],"tags":["nvd","cve.org","csaf","vex","red-hat","score-dispute"],"ingestedAt":"2026-09-16T10:53:53.978Z","epss":0.00307,"epssPercentile":0.23312,"cwe":["CWE-416"],"scores":{"nvd":7.5,"vendor":4.8},"slug":"CVE-2026-89897","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nmedia: cec: Serialize exclusive follower delivery\n\ncec_receive_notify() reads the exclusive follower pointer without the\nadapter lock. Serialize the no-follower check and message delivery\nagainst mode changes and release.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.\n\n## Vendor advisories\n\n- **Red Hat VEX** · Moderate · affected: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9, Red Hat OpenShift Container Platform 4 · no fix planned: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9, Red Hat OpenShift Container Platform 4 · updated 2026-10-24 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-89897.json)","depth":"twilight","depthScore":41,"depthScoreParts":{"impact":41.3,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[{"seq":205156,"id":"CVE-2026-89897","ts":1789570705504,"field":"cvss","old":null,"new":"7.5"},{"seq":205155,"id":"CVE-2026-89897","ts":1789570705504,"field":"severity","old":"none","new":"high"}]}