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vuln-cve/data/2026/46xxx/CVE-2026-46140.json
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{
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"cveMetadata": {
"cveId": "CVE-2026-46140",
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"state": "PUBLISHED",
"assignerShortName": "Linux",
"dateReserved": "2026-05-13T15:03:33.100Z",
"datePublished": "2026-05-28T09:35:56.104Z",
"dateUpdated": "2026-11-06T16:13:40.864Z"
},
"containers": {
"cna": {
"providerMetadata": {
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux",
"dateUpdated": "2026-07-04T11:50:42.029Z"
},
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: btmtk: validate WMT event SKB length before struct access\n\nbtmtk_usb_hci_wmt_sync() casts the WMT event response SKB data to\nstruct btmtk_hci_wmt_evt (7 bytes) and struct btmtk_hci_wmt_evt_funcc\n(9 bytes) without first checking that the SKB contains enough data.\nA short firmware response causes out-of-bounds reads from SKB tailroom.\n\nUse skb_pull_data() to validate and advance past the base WMT event\nheader. For the FUNC_CTRL case, pull the additional status field bytes\nbefore accessing them."
}
],
"affected": [
{
"product": "Linux",
"vendor": "Linux",
"defaultStatus": "unaffected",
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"programFiles": [
"drivers/bluetooth/btmtk.c"
],
"versions": [
{
"version": "f0457842215438786e2e205ad06a4fbb8ab63cd0",
"lessThan": "36c85f7029484d5ede769f8873d16e9c8e35533c",
"status": "affected",
"versionType": "git"
},
{
"version": "d019930b0049fc2648a6b279893d8ad330596e81",
"lessThan": "c411cf1bfde951cfa821809cf4020ba177f76e0c",
"status": "affected",
"versionType": "git"
},
{
"version": "d019930b0049fc2648a6b279893d8ad330596e81",
"lessThan": "624fb79dadc1b65757986a9d0fdde5c0cf3fe179",
"status": "affected",
"versionType": "git"
},
{
"version": "d019930b0049fc2648a6b279893d8ad330596e81",
"lessThan": "70d37a8b9229e394cc17ddad47e90b81d80fcd09",
"status": "affected",
"versionType": "git"
},
{
"version": "d019930b0049fc2648a6b279893d8ad330596e81",
"lessThan": "634a4408c0615c523cf7531790f4f14a422b9206",
"status": "affected",
"versionType": "git"
},
{
"version": "6.6.142",
"lessThan": "6.6.144",
"status": "affected",
"versionType": "semver"
}
]
},
{
"product": "Linux",
"vendor": "Linux",
"defaultStatus": "affected",
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"programFiles": [
"drivers/bluetooth/btmtk.c"
],
"versions": [
{
"version": "6.11",
"status": "affected"
},
{
"version": "0",
"lessThan": "6.11",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "6.6.144",
"lessThanOrEqual": "6.6.*",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "6.12.88",
"lessThanOrEqual": "6.12.*",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "6.18.30",
"lessThanOrEqual": "6.18.*",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "7.0.7",
"lessThanOrEqual": "7.0.*",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "7.1",
"lessThanOrEqual": "*",
"status": "unaffected",
"versionType": "original_commit_for_fix"
}
]
}
],
"cpeApplicability": [
{
"nodes": [
{
"operator": "OR",
"negate": false,
"cpeMatch": [
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "6.6.142",
"versionEndExcluding": "6.6.144"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "6.11",
"versionEndExcluding": "6.12.88"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "6.11",
"versionEndExcluding": "6.18.30"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "6.11",
"versionEndExcluding": "7.0.7"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "6.11",
"versionEndExcluding": "7.1"
}
]
}
]
}
],
"references": [
{
"url": "https://git.kernel.org/stable/c/36c85f7029484d5ede769f8873d16e9c8e35533c"
},
{
"url": "https://git.kernel.org/stable/c/c411cf1bfde951cfa821809cf4020ba177f76e0c"
},
{
"url": "https://git.kernel.org/stable/c/624fb79dadc1b65757986a9d0fdde5c0cf3fe179"
},
{
"url": "https://git.kernel.org/stable/c/70d37a8b9229e394cc17ddad47e90b81d80fcd09"
},
{
"url": "https://git.kernel.org/stable/c/634a4408c0615c523cf7531790f4f14a422b9206"
}
],
"title": "Bluetooth: btmtk: validate WMT event SKB length before struct access",
"x_generator": {
"engine": "bippy-1.2.0"
}
},
"adp": [
{
"metrics": [
{
"other": {
"type": "ssvc",
"content": {
"id": "CVE-2026-46140",
"role": "CISA Coordinator",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "partial"
}
],
"version": "2.0.3",
"timestamp": "2026-11-06T16:09:42.665541Z"
}
}
}
],
"title": "CISA ADP Vulnrichment",
"providerMetadata": {
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP",
"dateUpdated": "2026-11-06T16:13:40.864Z"
}
}
]
}
}