What is CVE-2026-43367?

CVE-2026-43367 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10, classified as a NULL Pointer Dereference flaw (CWE-476), affecting Linux kernel versions from 6.18.16 onward and patched in 6.18.19 and 6.19.9. CVE-2026-43367 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2026-43367?

CVE-2026-43367 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-2026-43367?

Yes, CVE-2026-43367 has been patched. Fixed versions include 6.18.19 and 6.19.9. If you are running Linux kernel 6.18.16 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2026-43367 actively exploited?

CVE-2026-43367 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is NULL Pointer Dereference (CWE-476)?

The product dereferences a pointer that it expects to be valid but is NULL, typically causing a crash. See MITRE CWE for full details: https://cwe.mitre.org/data/definitions/476.html

CVE-2026-43367

Medium

In the Linux kernel, the following vulnerability has been resolved: drm/amd: Fix a few more NULL pointer dereference in device cleanup I found a few more paths that cleanup fails due to a NULL version pointer on unsupported hardware. Add NULL checks as applicable. (cherry picked from commit f5a05f8414fc10f307eb965f303580c7778f8dd2)

Package Linux Kernel

Published 2026-05-08

Last modified 2026-05-15

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

Weakness type

CWE-476

CVE-2026-43367 is a NULL Pointer Dereference vulnerability

What is NULL Pointer Dereference?

The product dereferences a pointer that it expects to be valid but is NULL, typically causing a crash. Learn more on MITRE CWE

Affected versions

Linux kernel versions 6.18.16, 6.19.6 and later are affected. Fixed in 6.18.19, 6.19.9 and their respective stable series.

Affected from

≥ 6.18.16 ≥ 6.19.6

Fixed in

✓ 6.18.19 6.18.x ✓ 6.19.9 6.19.x

References

3 total

Kernel Git
https://git.kernel.org/stable/c/38f1640db7f8bf57b9e09c5b0b8b205a598f1b3e

Patch
Kernel Git
https://git.kernel.org/stable/c/5edcb0d6729b88f192ec8b0896aaf581e3593c9c

Patch
Kernel Git
https://git.kernel.org/stable/c/72ecb1dae72775fa9fea0159d8445d620a0a2295

Patch

Details

CVE ID CVE-2026-43367

Severity Medium

CVSS score 5.5 / 10

CVSS version 3.1

Published 2026-05-08

Modified 2026-05-15

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2026-43367?

CVE-2026-43367 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10 , classified as a NULL Pointer Dereference flaw (CWE-476) . It affects Linux kernel versions from 6.18.16 onward and has been patched in 6.18.19 and 6.19.9. CVE-2026-43367 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2026-43367?

CVE-2026-43367 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-2026-43367?

Yes. CVE-2026-43367 has been patched. Fixed versions include 6.18.19 and 6.19.9. If you are running Linux kernel 6.18.16 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2026-43367 actively exploited?

No. CVE-2026-43367 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.