Bluetooth: hci_sync: hold conn in hci_connect_acl/le_sync() callbacks

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-80692
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-08-28 08:16:54 UTC
Updated2026-08-29 07:16:51 UTC
DescriptionIn the Linux kernel, the following vulnerability has been resolved: Bluetooth: hci_sync: hold conn in hci_connect_acl/le_sync() callbacks There is theoretical UAF if the conn is freed while the hci_sync task is running. Hold refcount to avoid that.

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: 0.001550000 probability, percentile 0.049790000 (date 2026-08-28)

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 881559af5f5c545f6828e7c74d79813eb886d523 9a77f296aff4b2ca5f2928ab3a3220c82d8b4074 git Not specified
CNA Linux Linux affected 881559af5f5c545f6828e7c74d79813eb886d523 2f5d635ad5906b0235bc0c870e8beba3116e1e98 git Not specified
CNA Linux Linux affected d948e1ffa1d40240d5c81af6dcbcb87b39cb8d3c git Not specified
CNA Linux Linux affected 5dd0bd277a0a936708a33ecc447dce77a08cbde6 git Not specified
CNA Linux Linux affected 6.6.51 6.7 semver Not specified
CNA Linux Linux affected 6.8.9 6.9 semver Not specified
CNA Linux Linux affected 6.9 Not specified
CNA Linux Linux unaffected 6.9 semver Not specified
CNA Linux Linux unaffected 7.1.8 7.1.* semver Not specified
CNA Linux Linux unaffected 7.2 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/9a77f296aff4b2ca5f2928ab3a3220c82d8b4074 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/2f5d635ad5906b0235bc0c870e8beba3116e1e98 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
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