CVE-2026-43022

MEDIUM
MEDIUM Priority: 0.01 BB Relevance: 36/100
Published: 2026-05-01 Modified: 2026-10-30 First seen: 2026-10-30 Status: active

Attack Surface

Low Complexity No Interaction

CVSS Vector Breakdown

AV: Local
AC: Low
PR: Low
UI: None
S: Unchanged
C: None
I: None
A: High

Description

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.

Affected Software (21)

VendorProductVersion
Linux Linux f00f36db76eb8fd10d13e80e2590f23b5beaa54d < da531f7108218ab6a779861e4646562fc769c9b3
Linux Linux 1499f79995c7ee58e3bfeeff75f6d1b37dcda881 < dfee8da127bafa46530b72347bce3ccae736296d
Linux Linux 505ea2b295929e7be2b4e1bc86ee31cb7862fb01 < 799e2e5fbf3f14874b5c6cc289a0dd68b2ca1979
Linux Linux 505ea2b295929e7be2b4e1bc86ee31cb7862fb01 < 5cfa4f537a056c91ac6c09bc3ab58a4455217df7
Linux Linux 505ea2b295929e7be2b4e1bc86ee31cb7862fb01 < 0ad2ce230b38cd4b3f6732cc609e270461e626e5
Linux Linux 505ea2b295929e7be2b4e1bc86ee31cb7862fb01 < 2969554bcfccb5c609f6b6cd4a014933f3a66dd0
Linux Linux 357603f4d396d85fbf0045512efaf1d7f7394ed7
Linux Linux 6.1.120 < 6.1.191
Linux Linux 6.6.51 < 6.6.160
Linux Linux 6.8.9 < 6.9
Linux Linux 6.9
linux linux_kernel 6.9 – 6.19.12
linux linux_kernel 6.1.120
linux linux_kernel 6.6.51
linux linux_kernel 6.8.9
linux linux_kernel 7.0
linux linux_kernel 7.0
linux linux_kernel 7.0
linux linux_kernel 7.0
linux linux_kernel 7.0
linux linux_kernel 7.0

Bug Bounty Relevance

36 / 100
✓ Low complexity
✓ No user interaction

CVSS Score

5.5 / 10.0 v3.1
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

EPSS — Exploitation Probability

0.16%
Raw Score 0.001560
Percentile 4.7%
Date 2026-11-01

EPSS Trend

2026-11-01
0.00156
2026-10-31
0.00156
2026-10-30
0.00155
2026-10-29
0.00155

Intelligence Sources

mitre ref →
nvd ref →