Bluetooth: hci_sync: hci_cmd_sync_queue_once() return -EEXIST if exists

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Summary

CVECVE-2026-43022
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-05-01 15:16:46 UTC
Updated2026-05-08 14:53:58 UTC
DescriptionIn the Linux kernel, the following vulnerability has been resolved: Bluetooth: hci_sync: hci_cmd_sync_queue_once() return -EEXIST if exists hci_cmd_sync_queue_once() needs to indicate whether a queue item was added, so caller can know if callbacks are called, so it can avoid leaking resources. Change the function to return -EEXIST if queue item already exists. Modify all callsites to handle that.

Risk And Classification

Primary CVSS: v3.1 5.5 MEDIUM from [email protected]

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

EPSS: 0.000140000 probability, percentile 0.029270000 (date 2026-05-12)

Problem Types: NVD-CWE-noinfo

CVSS v3.1 Breakdown

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

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

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Operating System Linux Linux Kernel All All All All
Operating System Linux Linux Kernel 6.1.120 All All All
Operating System Linux Linux Kernel 6.6.51 All All All
Operating System Linux Linux Kernel 6.8.9 All All All
Operating System Linux Linux Kernel 7.0 rc1 All All
Operating System Linux Linux Kernel 7.0 rc2 All All
Operating System Linux Linux Kernel 7.0 rc3 All All
Operating System Linux Linux Kernel 7.0 rc4 All All
Operating System Linux Linux Kernel 7.0 rc5 All All
Operating System Linux Linux Kernel 7.0 rc6 All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected 505ea2b295929e7be2b4e1bc86ee31cb7862fb01 0ad2ce230b38cd4b3f6732cc609e270461e626e5 git Not specified
CNA Linux Linux affected 505ea2b295929e7be2b4e1bc86ee31cb7862fb01 2969554bcfccb5c609f6b6cd4a014933f3a66dd0 git Not specified
CNA Linux Linux affected f00f36db76eb8fd10d13e80e2590f23b5beaa54d git Not specified
CNA Linux Linux affected 1499f79995c7ee58e3bfeeff75f6d1b37dcda881 git Not specified
CNA Linux Linux affected 357603f4d396d85fbf0045512efaf1d7f7394ed7 git Not specified
CNA Linux Linux affected 6.9 Not specified
CNA Linux Linux unaffected 6.9 semver Not specified
CNA Linux Linux unaffected 6.19.12 6.19.* semver Not specified
CNA Linux Linux unaffected 7.0 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/2969554bcfccb5c609f6b6cd4a014933f3a66dd0 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/0ad2ce230b38cd4b3f6732cc609e270461e626e5 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
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