CVE-2023-54214 (GCVE-0-2023-54214)
Vulnerability from cvelistv5 – Published: 2025-12-30 12:11 – Updated: 2025-12-30 12:11
VLAI?
Title
Bluetooth: L2CAP: Fix potential user-after-free
Summary
In the Linux kernel, the following vulnerability has been resolved:
Bluetooth: L2CAP: Fix potential user-after-free
This fixes all instances of which requires to allocate a buffer calling
alloc_skb which may release the chan lock and reacquire later which
makes it possible that the chan is disconnected in the meantime.
Severity ?
No CVSS data available.
Assigner
References
Impacted products
| Vendor | Product | Version | |||||||
|---|---|---|---|---|---|---|---|---|---|
| Linux | Linux |
Affected:
a6a5568c03c4805d4d250f6bd9d468eeeb4ea059 , < b2fde8cb2a25125111f2144604e0e7c0ebcc4bba
(git)
Affected: a6a5568c03c4805d4d250f6bd9d468eeeb4ea059 , < a6a7d1541fefddf7ca0cfb34c1bff63ff809cc49 (git) Affected: a6a5568c03c4805d4d250f6bd9d468eeeb4ea059 , < 60aaccf16d1e099c16bebfb96428ae762cb528f7 (git) Affected: a6a5568c03c4805d4d250f6bd9d468eeeb4ea059 , < b8ed41cc04fb74005aa51d17865ca3d022760335 (git) Affected: a6a5568c03c4805d4d250f6bd9d468eeeb4ea059 , < 31a288a4df7f6a28e65da22a4ab2add4a963738e (git) Affected: a6a5568c03c4805d4d250f6bd9d468eeeb4ea059 , < 64e28ecf44e46de9f01915a4146706a21c3469d2 (git) Affected: a6a5568c03c4805d4d250f6bd9d468eeeb4ea059 , < 994e3e18908f5c4a12d07b44018e6aa85f071048 (git) Affected: a6a5568c03c4805d4d250f6bd9d468eeeb4ea059 , < df5703348813235874d851934e957c3723d71644 (git) |
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{
"containers": {
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{
"defaultStatus": "unaffected",
"product": "Linux",
"programFiles": [
"net/bluetooth/l2cap_core.c",
"net/bluetooth/l2cap_sock.c"
],
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"vendor": "Linux",
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"versionType": "git"
},
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},
{
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{
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],
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"vendor": "Linux",
"versions": [
{
"status": "affected",
"version": "3.5"
},
{
"lessThan": "3.5",
"status": "unaffected",
"version": "0",
"versionType": "semver"
},
{
"lessThanOrEqual": "4.14.*",
"status": "unaffected",
"version": "4.14.308",
"versionType": "semver"
},
{
"lessThanOrEqual": "4.19.*",
"status": "unaffected",
"version": "4.19.276",
"versionType": "semver"
},
{
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"status": "unaffected",
"version": "5.4.235",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.10.*",
"status": "unaffected",
"version": "5.10.173",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.15.*",
"status": "unaffected",
"version": "5.15.99",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.1.*",
"status": "unaffected",
"version": "6.1.16",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.2.*",
"status": "unaffected",
"version": "6.2.3",
"versionType": "semver"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "6.3",
"versionType": "original_commit_for_fix"
}
]
}
],
"cpeApplicability": [
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"nodes": [
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},
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},
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{
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{
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],
"negate": false,
"operator": "OR"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: L2CAP: Fix potential user-after-free\n\nThis fixes all instances of which requires to allocate a buffer calling\nalloc_skb which may release the chan lock and reacquire later which\nmakes it possible that the chan is disconnected in the meantime."
}
],
"providerMetadata": {
"dateUpdated": "2025-12-30T12:11:11.383Z",
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux"
},
"references": [
{
"url": "https://git.kernel.org/stable/c/b2fde8cb2a25125111f2144604e0e7c0ebcc4bba"
},
{
"url": "https://git.kernel.org/stable/c/a6a7d1541fefddf7ca0cfb34c1bff63ff809cc49"
},
{
"url": "https://git.kernel.org/stable/c/60aaccf16d1e099c16bebfb96428ae762cb528f7"
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{
"url": "https://git.kernel.org/stable/c/b8ed41cc04fb74005aa51d17865ca3d022760335"
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{
"url": "https://git.kernel.org/stable/c/df5703348813235874d851934e957c3723d71644"
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"title": "Bluetooth: L2CAP: Fix potential user-after-free",
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"cveId": "CVE-2023-54214",
"datePublished": "2025-12-30T12:11:11.383Z",
"dateReserved": "2025-12-30T12:06:44.500Z",
"dateUpdated": "2025-12-30T12:11:11.383Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"vulnerability-lookup:meta": {
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}
}
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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