What is CVE-2026-43004?

CVE-2026-43004 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10, affecting Linux kernel versions from 6.15 onward and patched in 6.18.22, 6.19.12 and 7.0. CVE-2026-43004 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2026-43004?

CVE-2026-43004 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-2026-43004?

Yes, CVE-2026-43004 has been patched. Fixed versions include 6.18.22, 6.19.12 and 7.0. If you are running Linux kernel 6.15 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2026-43004 actively exploited?

CVE-2026-43004 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2026-43004

Medium

In the Linux kernel, the following vulnerability has been resolved: spi: stm32-ospi: Fix resource leak in remove() callback The remove() callback returned early if pm_runtime_resume_and_get() failed, skipping the cleanup of spi controller and other resources. Remove the early return so cleanup completes regardless of PM resume result.

Package Linux Kernel

Published 2026-05-01

Last modified 2026-05-12

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 6.15 and later are affected. Fixed in 6.18.22, 6.19.12, 7.0 and their respective stable series.

Affected from

≥ 6.15

Fixed in

✓ 6.18.22 6.18.x ✓ 6.19.12 6.19.x ✓ 7.0

References

The following references provide additional information about CVE-2026-43004 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/0807532c5ebb72751bfe773e6ae79db0e9c57ab9
Patch
Kernel patch commit
https://git.kernel.org/stable/c/73cd1f97946ae3796544448ff12c07f399bb2881
Patch
Kernel patch commit
https://git.kernel.org/stable/c/b4ec54c974c6ea68b309989dcc3d3511068f45f3
Patch

Details

CVE ID CVE-2026-43004

Severity Medium

CVSS score 5.5 / 10

CVSS version 3.1

Published 2026-05-01

Modified 2026-05-12

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2026-43004?

CVE-2026-43004 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10 . It affects Linux kernel versions from 6.15 onward and has been patched in 6.18.22, 6.19.12 and 7.0. CVE-2026-43004 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2026-43004?

CVE-2026-43004 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-2026-43004?

Yes — CVE-2026-43004 has been patched. Fixed versions include 6.18.22, 6.19.12 and 7.0. If you are running Linux kernel 6.15 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2026-43004 actively exploited?

No — CVE-2026-43004 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.