CVE-2026-43022

In 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.

CVSS 3.1

5.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

EPSS

0.2% chance of exploitation in the next 30 days; higher than 4% of CVEs (scores of 2026-10-25)

Published

2026-05-01

Modified

2026-10-21

Record from

the NVD, synced 2026-10-22

Affected

• linux:linux_kernel

References

• https://git.kernel.org/stable/c/0ad2ce230b38cd4b3f6732cc609e270461e626e5
• https://git.kernel.org/stable/c/2969554bcfccb5c609f6b6cd4a014933f3a66dd0
• https://git.kernel.org/stable/c/5cfa4f537a056c91ac6c09bc3ab58a4455217df7
• https://git.kernel.org/stable/c/799e2e5fbf3f14874b5c6cc289a0dd68b2ca1979
• https://git.kernel.org/stable/c/dfee8da127bafa46530b72347bce3ccae736296d

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