CVE-2026-80692
Full vulnerability record from the local CVENow database.
Description
In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hci_sync: hold conn in hci_connect_acl/le_sync() callbacks There is theoretical UAF if the conn is freed while the hci_sync task is running. Hold refcount to avoid that.
Severity
HIGH
CVSS score
8.8
(v3.1)
Vulnerability status
Received
Source identifier
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Published
2026-08-28 08:16:54.690000
Last modified
2026-10-21 13:19:58.097000
View original CVE JSON
{
"id": "CVE-2026-80692",
"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"published": "2026-08-28T08:16:54.690",
"lastModified": "2026-10-21T13:19:58.097",
"vulnStatus": "Received",
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: hci_sync: hold conn in hci_connect_acl/le_sync() callbacks\n\nThere is theoretical UAF if the conn is freed while the hci_sync task\nis running.\n\nHold refcount to avoid that."
}
],
"affected": [
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"affectedData": [
{
"vendor": "Linux",
"product": "Linux",
"defaultStatus": "unaffected",
"programFiles": [
"net/bluetooth/hci_sync.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"versions": [
{
"version": "d948e1ffa1d40240d5c81af6dcbcb87b39cb8d3c",
"lessThan": "f0a544ef6e38e4063d0ed72ad83d6bf0f4e70805",
"versionType": "git",
"status": "affected"
},
{
"version": "881559af5f5c545f6828e7c74d79813eb886d523",
"lessThan": "301a4e2e89313dee10f0e8cb084daedbbe4a3dce",
"versionType": "git",
"status": "affected"
},
{
"version": "881559af5f5c545f6828e7c74d79813eb886d523",
"lessThan": "a4de6fc95b2f36967fc247ae51cad2171194f7cd",
"versionType": "git",
"status": "affected"
},
{
"version": "881559af5f5c545f6828e7c74d79813eb886d523",
"lessThan": "9a77f296aff4b2ca5f2928ab3a3220c82d8b4074",
"versionType": "git",
"status": "affected"
},
{
"version": "881559af5f5c545f6828e7c74d79813eb886d523",
"lessThan": "2f5d635ad5906b0235bc0c870e8beba3116e1e98",
"versionType": "git",
"status": "affected"
},
{
"version": "5dd0bd277a0a936708a33ecc447dce77a08cbde6",
"versionType": "git",
"status": "affected"
},
{
"version": "6.6.51",
"lessThan": "6.6.160",
"versionType": "semver",
"status": "affected"
},
{
"version": "6.8.9",
"lessThan": "6.9",
"versionType": "semver",
"status": "affected"
}
]
},
{
"vendor": "Linux",
"product": "Linux",
"defaultStatus": "affected",
"programFiles": [
"net/bluetooth/hci_sync.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"versions": [
{
"version": "6.9",
"status": "affected"
},
{
"version": "0",
"lessThan": "6.9",
"versionType": "semver",
"status": "unaffected"
},
{
"version": "6.6.160",
"lessThanOrEqual": "6.6.*",
"versionType": "semver",
"status": "unaffected"
},
{
"version": "6.12.114",
"lessThanOrEqual": "6.12.*",
"versionType": "semver",
"status": "unaffected"
},
{
"version": "6.18.57",
"lessThanOrEqual": "6.18.*",
"versionType": "semver",
"status": "unaffected"
},
{
"version": "7.1.8",
"lessThanOrEqual": "7.1.*",
"versionType": "semver",
"status": "unaffected"
},
{
"version": "7.2",
"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:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"baseScore": 8.8,
"baseSeverity": "HIGH",
"attackVector": "ADJACENT_NETWORK",
"attackComplexity": "LOW",
"privilegesRequired": "NONE",
"userInteraction": "NONE",
"scope": "UNCHANGED",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"availabilityImpact": "HIGH"
},
"exploitabilityScore": 2.8,
"impactScore": 5.9
}
],
"ssvcV203": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
"timestamp": "2026-10-16T19:20:08.082830Z",
"id": "CVE-2026-80692",
"options": [
{
"exploitation": "none"
},
{
"automatable": "no"
},
{
"technicalImpact": "total"
}
],
"role": "CISA Coordinator",
"version": "2.0.3"
}
}
]
},
"references": [
{
"url": "https://git.kernel.org/stable/c/2f5d635ad5906b0235bc0c870e8beba3116e1e98",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/301a4e2e89313dee10f0e8cb084daedbbe4a3dce",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/9a77f296aff4b2ca5f2928ab3a3220c82d8b4074",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/a4de6fc95b2f36967fc247ae51cad2171194f7cd",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/f0a544ef6e38e4063d0ed72ad83d6bf0f4e70805",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}
]
}