Bluetooth: bnep: pin L2CAP connection during netdev registration

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-64408
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-07-25 10:17:24 UTC
Updated2026-07-27 05:16:47 UTC
DescriptionIn the Linux kernel, the following vulnerability has been resolved: Bluetooth: bnep: pin L2CAP connection during netdev registration bnep_add_connection() reads the L2CAP connection without holding the channel lock, then passes its HCI device to register_netdev(). Controller teardown can clear and release that connection concurrently, leaving the network device registration path to dereference a freed parent device. Take a reference to the L2CAP connection while holding the channel lock. Retain it until register_netdev() has taken the parent device reference.

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: 0.002620000 probability, percentile 0.178850000 (date 2026-07-27)

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 65f53e9802dbfae0e5758a91793c3f5f8bece49b 390b5db3ff8745187f094c4e915663b7b1f98944 git Not specified
CNA Linux Linux affected 65f53e9802dbfae0e5758a91793c3f5f8bece49b 46a88784c4c9b96954dd86f747ce93f65efa1302 git Not specified
CNA Linux Linux affected 65f53e9802dbfae0e5758a91793c3f5f8bece49b 551ae773ec64045b4e72099132654887e0270bcc git Not specified
CNA Linux Linux affected 65f53e9802dbfae0e5758a91793c3f5f8bece49b ae215c5b6422d8eda443b861b124bd1be6969c31 git Not specified
CNA Linux Linux affected 65f53e9802dbfae0e5758a91793c3f5f8bece49b df22adc7eafc22e651561813c11dc51a796b12ee git Not specified
CNA Linux Linux affected 65f53e9802dbfae0e5758a91793c3f5f8bece49b a6b22dbd80926556290ad2243be25218d6956a19 git Not specified
CNA Linux Linux affected 65f53e9802dbfae0e5758a91793c3f5f8bece49b 563a8573047182f550b1e1e030615755cd8c41da git Not specified
CNA Linux Linux affected 65f53e9802dbfae0e5758a91793c3f5f8bece49b bb067a99a0356196c0b89a95721985485ebce5a5 git Not specified
CNA Linux Linux affected 3.13 Not specified
CNA Linux Linux unaffected 3.13 semver Not specified
CNA Linux Linux unaffected 5.10.261 5.10.* semver Not specified
CNA Linux Linux unaffected 5.15.212 5.15.* semver Not specified
CNA Linux Linux unaffected 6.1.178 6.1.* semver Not specified
CNA Linux Linux unaffected 6.6.145 6.6.* semver Not specified
CNA Linux Linux unaffected 6.12.96 6.12.* semver Not specified
CNA Linux Linux unaffected 6.18.39 6.18.* semver Not specified
CNA Linux Linux unaffected 7.1.4 7.1.* semver Not specified
CNA Linux Linux unaffected 7.2-rc3 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/563a8573047182f550b1e1e030615755cd8c41da 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/390b5db3ff8745187f094c4e915663b7b1f98944 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/ae215c5b6422d8eda443b861b124bd1be6969c31 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/df22adc7eafc22e651561813c11dc51a796b12ee 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/a6b22dbd80926556290ad2243be25218d6956a19 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/551ae773ec64045b4e72099132654887e0270bcc 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/46a88784c4c9b96954dd86f747ce93f65efa1302 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/bb067a99a0356196c0b89a95721985485ebce5a5 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
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