Bluetooth: L2CAP: Fix potential user-after-free

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2023-54214
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2025-12-30 13:16:09 UTC
Updated2026-10-15 22:17:55 UTC
DescriptionIn 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.

Risk And Classification

Primary CVSS: v3.1 8.8 HIGH from 416baaa9-dc9f-4396-8d5f-8c081fb06d67

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS: 0.002750000 probability, percentile 0.196050000 (date 2026-08-06)

VersionSourceTypeScoreSeverityVector
3.1416baaa9-dc9f-4396-8d5f-8c081fb06d67Secondary8.8HIGHCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
3.1CNADECLARED8.8HIGHCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS v3.1 Breakdown

Attack Vector
Adjacent
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected a6a5568c03c4805d4d250f6bd9d468eeeb4ea059 b2fde8cb2a25125111f2144604e0e7c0ebcc4bba git Not specified
CNA Linux Linux affected a6a5568c03c4805d4d250f6bd9d468eeeb4ea059 a6a7d1541fefddf7ca0cfb34c1bff63ff809cc49 git Not specified
CNA Linux Linux affected a6a5568c03c4805d4d250f6bd9d468eeeb4ea059 60aaccf16d1e099c16bebfb96428ae762cb528f7 git Not specified
CNA Linux Linux affected a6a5568c03c4805d4d250f6bd9d468eeeb4ea059 b8ed41cc04fb74005aa51d17865ca3d022760335 git Not specified
CNA Linux Linux affected a6a5568c03c4805d4d250f6bd9d468eeeb4ea059 31a288a4df7f6a28e65da22a4ab2add4a963738e git Not specified
CNA Linux Linux affected a6a5568c03c4805d4d250f6bd9d468eeeb4ea059 64e28ecf44e46de9f01915a4146706a21c3469d2 git Not specified
CNA Linux Linux affected a6a5568c03c4805d4d250f6bd9d468eeeb4ea059 994e3e18908f5c4a12d07b44018e6aa85f071048 git Not specified
CNA Linux Linux affected a6a5568c03c4805d4d250f6bd9d468eeeb4ea059 df5703348813235874d851934e957c3723d71644 git Not specified
CNA Linux Linux affected 3.5 Not specified
CNA Linux Linux unaffected 3.5 semver Not specified
CNA Linux Linux unaffected 4.14.308 4.14.* semver Not specified
CNA Linux Linux unaffected 4.19.276 4.19.* semver Not specified
CNA Linux Linux unaffected 5.4.235 5.4.* semver Not specified
CNA Linux Linux unaffected 5.10.173 5.10.* semver Not specified
CNA Linux Linux unaffected 5.15.99 5.15.* semver Not specified
CNA Linux Linux unaffected 6.1.16 6.1.* semver Not specified
CNA Linux Linux unaffected 6.2.3 6.2.* semver Not specified
CNA Linux Linux unaffected 6.3 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/31a288a4df7f6a28e65da22a4ab2add4a963738e 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/60aaccf16d1e099c16bebfb96428ae762cb528f7 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/a6a7d1541fefddf7ca0cfb34c1bff63ff809cc49 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/df5703348813235874d851934e957c3723d71644 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/994e3e18908f5c4a12d07b44018e6aa85f071048 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/b2fde8cb2a25125111f2144604e0e7c0ebcc4bba 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/64e28ecf44e46de9f01915a4146706a21c3469d2 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/b8ed41cc04fb74005aa51d17865ca3d022760335 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
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