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vuln-cve/data/2026/53xxx/CVE-2026-53252.json
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{
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"cveMetadata": {
"cveId": "CVE-2026-53252",
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"state": "PUBLISHED",
"assignerShortName": "Linux",
"dateReserved": "2026-06-09T07:44:35.394Z",
"datePublished": "2026-06-25T08:39:43.951Z",
"dateUpdated": "2026-11-06T16:34:15.874Z"
},
"containers": {
"cna": {
"providerMetadata": {
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux",
"dateUpdated": "2026-06-25T08:39:43.951Z"
},
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: fix memory leak in error path of hci_alloc_dev()\n\nEarly failures in Bluetooth HCI UART configuration leak SRCU percpu\nmemory.\n\nWhen device initialization fails before hci_register_dev() completes,\nthe HCI_UNREGISTER flag is never set. As a result, when the device\nreference count reaches zero, bt_host_release() evaluates this flag as\nfalse and falls back to a direct kfree(hdev).\n\nBecause hci_release_dev() is bypassed, the SRCU struct initialized\nearly in hci_alloc_dev() is never cleaned up, resulting in a leak of\npercpu memory.\n\nFix the leak by explicitly calling cleanup_srcu_struct() in the\nfallback (unregistered) branch of bt_host_release() before freeing\nthe device."
}
],
"affected": [
{
"product": "Linux",
"vendor": "Linux",
"defaultStatus": "unaffected",
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"programFiles": [
"net/bluetooth/hci_sysfs.c"
],
"versions": [
{
"version": "90dee0a0ff84fac8accd5be98412b3819f667149",
"lessThan": "5b7dfca6f852e6b9d809fd0263b5427cc9fb33fd",
"status": "affected",
"versionType": "git"
},
{
"version": "c56b177efce8b62798e4d96bdb9867106cb7c4a0",
"lessThan": "c016118b9e51eeaf5bc93850d4c455a3b583c0aa",
"status": "affected",
"versionType": "git"
},
{
"version": "bc0819a25e04cd68ef3568cfa51b63118fea39a7",
"lessThan": "0622e527a31d4b44737fed5c1a2ac1fc2cfb5184",
"status": "affected",
"versionType": "git"
},
{
"version": "ce23b73f0f27e2dbeb81734a79db710f05aa33c6",
"lessThan": "bc2efe73c194a74839d7cf57b63880d97e21d309",
"status": "affected",
"versionType": "git"
},
{
"version": "1d6123102e9fbedc8d25bf4731da6d513173e49e",
"lessThan": "ce4b4cac3c5749b6aa75e62e2991ae2263f2f889",
"status": "affected",
"versionType": "git"
},
{
"version": "1d6123102e9fbedc8d25bf4731da6d513173e49e",
"lessThan": "f82799407a50af7bcacacf09cc9b279af8fe9b81",
"status": "affected",
"versionType": "git"
},
{
"version": "1d6123102e9fbedc8d25bf4731da6d513173e49e",
"lessThan": "37b3009bf5976e8ab77c8b9a9bc3bbd7ff49e37f",
"status": "affected",
"versionType": "git"
},
{
"version": "dd4becd3fd4102696e1c15e6d260a1712a2d8685",
"status": "affected",
"versionType": "git"
},
{
"version": "0e5c144c557df910ab64d9c25d06399a9a735e65",
"status": "affected",
"versionType": "git"
},
{
"version": "5.15.209",
"lessThan": "5.15.210",
"status": "affected",
"versionType": "semver"
},
{
"version": "6.1.167",
"lessThan": "6.1.176",
"status": "affected",
"versionType": "semver"
},
{
"version": "6.6.97",
"lessThan": "6.6.143",
"status": "affected",
"versionType": "semver"
},
{
"version": "6.12.36",
"lessThan": "6.12.94",
"status": "affected",
"versionType": "semver"
},
{
"version": "5.10.259",
"lessThan": "5.11",
"status": "affected",
"versionType": "semver"
},
{
"version": "6.15.5",
"lessThan": "6.16",
"status": "affected",
"versionType": "semver"
}
]
},
{
"product": "Linux",
"vendor": "Linux",
"defaultStatus": "affected",
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"programFiles": [
"net/bluetooth/hci_sysfs.c"
],
"versions": [
{
"version": "6.16",
"status": "affected"
},
{
"version": "0",
"lessThan": "6.16",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "5.15.210",
"lessThanOrEqual": "5.15.*",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "6.1.176",
"lessThanOrEqual": "6.1.*",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "6.6.143",
"lessThanOrEqual": "6.6.*",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "6.12.94",
"lessThanOrEqual": "6.12.*",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "6.18.36",
"lessThanOrEqual": "6.18.*",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "7.0.13",
"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": "5.15.209",
"versionEndExcluding": "5.15.210"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "6.1.167",
"versionEndExcluding": "6.1.176"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "6.6.97",
"versionEndExcluding": "6.6.143"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "6.12.36",
"versionEndExcluding": "6.12.94"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "6.16",
"versionEndExcluding": "6.18.36"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "6.16",
"versionEndExcluding": "7.0.13"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "6.16",
"versionEndExcluding": "7.1"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "5.10.259"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "6.15.5"
}
]
}
]
}
],
"references": [
{
"url": "https://git.kernel.org/stable/c/5b7dfca6f852e6b9d809fd0263b5427cc9fb33fd"
},
{
"url": "https://git.kernel.org/stable/c/c016118b9e51eeaf5bc93850d4c455a3b583c0aa"
},
{
"url": "https://git.kernel.org/stable/c/0622e527a31d4b44737fed5c1a2ac1fc2cfb5184"
},
{
"url": "https://git.kernel.org/stable/c/bc2efe73c194a74839d7cf57b63880d97e21d309"
},
{
"url": "https://git.kernel.org/stable/c/ce4b4cac3c5749b6aa75e62e2991ae2263f2f889"
},
{
"url": "https://git.kernel.org/stable/c/f82799407a50af7bcacacf09cc9b279af8fe9b81"
},
{
"url": "https://git.kernel.org/stable/c/37b3009bf5976e8ab77c8b9a9bc3bbd7ff49e37f"
}
],
"title": "Bluetooth: fix memory leak in error path of hci_alloc_dev()",
"x_generator": {
"engine": "bippy-1.2.0"
}
},
"adp": [
{
"metrics": [
{
"other": {
"type": "ssvc",
"content": {
"id": "CVE-2026-53252",
"role": "CISA Coordinator",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "partial"
}
],
"version": "2.0.3",
"timestamp": "2026-11-06T16:24:05.966694Z"
}
}
}
],
"title": "CISA ADP Vulnrichment",
"providerMetadata": {
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP",
"dateUpdated": "2026-11-06T16:34:15.874Z"
}
}
]
}
}