CVE-2026-89897
Full vulnerability record from the local CVENow database.
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.
Severity
HIGH
CVSS score
7.5
(v3.1)
Vulnerability status
Received
Source identifier
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Published
2026-09-16 11:16:58.533000
Last modified
2026-10-19 09:18:34.933000
View original CVE JSON
{
"id": "CVE-2026-89897",
"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"published": "2026-09-16T11:16:58.533",
"lastModified": "2026-10-19T09:18:34.933",
"vulnStatus": "Received",
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "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 and message delivery\nagainst mode changes and release."
}
],
"affected": [
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"affectedData": [
{
"vendor": "Linux",
"product": "Linux",
"defaultStatus": "unaffected",
"programFiles": [
"drivers/media/cec/core/cec-adap.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"versions": [
{
"version": "9881fe0ca187c213eb3a6a8e78e45ad4d1cec171",
"lessThan": "efc829b4b937f98c4467bffe9243f756b7cfbf7f",
"versionType": "git",
"status": "affected"
},
{
"version": "9881fe0ca187c213eb3a6a8e78e45ad4d1cec171",
"lessThan": "cac577854826950dda4d53569728b1da6c1425d5",
"versionType": "git",
"status": "affected"
},
{
"version": "9881fe0ca187c213eb3a6a8e78e45ad4d1cec171",
"lessThan": "4b532b271c91790b7ab661cd488a7ad36f5c4f6b",
"versionType": "git",
"status": "affected"
},
{
"version": "9881fe0ca187c213eb3a6a8e78e45ad4d1cec171",
"lessThan": "271e57a936dcdbaecb4b1bd005d9a285bbe60ab4",
"versionType": "git",
"status": "affected"
},
{
"version": "9881fe0ca187c213eb3a6a8e78e45ad4d1cec171",
"lessThan": "df941e6851da17fc53c7f6af2bdcc7383d17babc",
"versionType": "git",
"status": "affected"
},
{
"version": "9881fe0ca187c213eb3a6a8e78e45ad4d1cec171",
"lessThan": "5c62095acc2a952099688774513c4a637bcdb2b5",
"versionType": "git",
"status": "affected"
},
{
"version": "9881fe0ca187c213eb3a6a8e78e45ad4d1cec171",
"lessThan": "ae614f48712156fb0f55b207338d48d422c58bc0",
"versionType": "git",
"status": "affected"
},
{
"version": "9881fe0ca187c213eb3a6a8e78e45ad4d1cec171",
"lessThan": "1924d0788caa6c66fd320dd4704fae99487fd2c7",
"versionType": "git",
"status": "affected"
}
]
},
{
"vendor": "Linux",
"product": "Linux",
"defaultStatus": "affected",
"programFiles": [
"drivers/media/cec/core/cec-adap.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"versions": [
{
"version": "4.8",
"status": "affected"
},
{
"version": "0",
"lessThan": "4.8",
"versionType": "semver",
"status": "unaffected"
},
{
"version": "5.10.270",
"lessThanOrEqual": "5.10.*",
"versionType": "semver",
"status": "unaffected"
},
{
"version": "5.15.221",
"lessThanOrEqual": "5.15.*",
"versionType": "semver",
"status": "unaffected"
},
{
"version": "6.1.188",
"lessThanOrEqual": "6.1.*",
"versionType": "semver",
"status": "unaffected"
},
{
"version": "6.6.157",
"lessThanOrEqual": "6.6.*",
"versionType": "semver",
"status": "unaffected"
},
{
"version": "6.12.110",
"lessThanOrEqual": "6.12.*",
"versionType": "semver",
"status": "unaffected"
},
{
"version": "6.18.51",
"lessThanOrEqual": "6.18.*",
"versionType": "semver",
"status": "unaffected"
},
{
"version": "7.2.5",
"lessThanOrEqual": "7.2.*",
"versionType": "semver",
"status": "unaffected"
},
{
"version": "7.3",
"lessThanOrEqual": "*",
"versionType": "original_commit_for_fix",
"status": "unaffected"
}
]
}
]
}
],
"metrics": {
"cvssMetricV31": [
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"type": "Secondary",
"cvssData": {
"version": "3.1",
"vectorString": "CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
"baseScore": 7.5,
"baseSeverity": "HIGH",
"attackVector": "ADJACENT_NETWORK",
"attackComplexity": "HIGH",
"privilegesRequired": "NONE",
"userInteraction": "NONE",
"scope": "UNCHANGED",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"availabilityImpact": "HIGH"
},
"exploitabilityScore": 1.6,
"impactScore": 5.9
}
]
},
"references": [
{
"url": "https://git.kernel.org/stable/c/1924d0788caa6c66fd320dd4704fae99487fd2c7",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/271e57a936dcdbaecb4b1bd005d9a285bbe60ab4",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/4b532b271c91790b7ab661cd488a7ad36f5c4f6b",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/5c62095acc2a952099688774513c4a637bcdb2b5",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/ae614f48712156fb0f55b207338d48d422c58bc0",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/cac577854826950dda4d53569728b1da6c1425d5",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/df941e6851da17fc53c7f6af2bdcc7383d17babc",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/efc829b4b937f98c4467bffe9243f756b7cfbf7f",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}
]
}