What is CVE-2026-43022?

CVE-2026-43022 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10, affecting Linux kernel versions from 6.1.120 onward and patched in 6.19.12 and 7.0. CVE-2026-43022 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2026-43022?

CVE-2026-43022 has a CVSS score of 5.5 out of 10, rated Medium severity. The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.

Is there a patch available for CVE-2026-43022?

Yes, CVE-2026-43022 has been patched. Fixed versions include 6.19.12 and 7.0. If you are running Linux kernel 6.1.120 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2026-43022 actively exploited?

CVE-2026-43022 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2026-43022

Medium

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.

Package Linux Kernel

Published 2026-05-01

Last modified 2026-05-08

CVSS version 3.1

Patch available

Yes

CVSS 3.1 score

5.5

out of 10

Medium

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

None

Availability

High

Vector string

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

Affected versions

Linux kernel versions 6.1.120, 6.6.51, 6.8.9, 6.9 and later are affected. Fixed in 6.19.12, 7.0 and their respective stable series.

Affected from

≥ 6.1.120 ≥ 6.6.51 ≥ 6.8.9 ≥ 6.9

Fixed in

✓ 6.19.12 6.19.x ✓ 7.0

References

The following references provide additional information about CVE-2026-43022 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.

Kernel patch commit
https://git.kernel.org/stable/c/0ad2ce230b38cd4b3f6732cc609e270461e626e5
Patch
Kernel patch commit
https://git.kernel.org/stable/c/2969554bcfccb5c609f6b6cd4a014933f3a66dd0
Patch

Details

CVE ID CVE-2026-43022

Severity Medium

CVSS score 5.5 / 10

CVSS version 3.1

Published 2026-05-01

Modified 2026-05-08

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2026-43022?

CVE-2026-43022 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10 . It affects Linux kernel versions from 6.1.120 onward and has been patched in 6.19.12 and 7.0. CVE-2026-43022 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2026-43022?

CVE-2026-43022 has a CVSS score of 5.5 out of 10, rated Medium severity (CVSS 3.1). The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.
Is there a patch available for CVE-2026-43022?

Yes — CVE-2026-43022 has been patched. Fixed versions include 6.19.12 and 7.0. If you are running Linux kernel 6.1.120 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2026-43022 actively exploited?

No — CVE-2026-43022 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.