What is CVE-2026-43369?

CVE-2026-43369 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-2026-43369 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2026-43369?

CVE-2026-43369 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-2026-43369?

Yes, CVE-2026-43369 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-2026-43369 actively exploited?

CVE-2026-43369 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-2026-43369

Medium

In the Linux kernel, the following vulnerability has been resolved: drm/amd: Fix NULL pointer dereference in device cleanup When GPU initialization fails due to an unsupported HW block IP blocks may have a NULL version pointer. During cleanup in amdgpu_device_fini_hw, the code calls amdgpu_device_set_pg_state and amdgpu_device_set_cg_state which iterate over all IP blocks and access adev->ip_blocks[i].version without NULL checks, leading to a kernel NULL pointer dereference. Add NULL checks for adev->ip_blocks[i].version in both amdgpu_device_set_cg_state and amdgpu_device_set_pg_state to prevent dereferencing NULL pointers during GPU teardown when initialization has failed. (cherry picked from commit b7ac77468cda92eecae560b05f62f997a12fe2f2)

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-2026-43369 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/062ea905fff7756b2e87143ffccaece5cdb44267

Patch
Kernel Git
https://git.kernel.org/stable/c/43025c941aced9a9009f9ff20eea4eb78c61deb8

Patch
Kernel Git
https://git.kernel.org/stable/c/767cd24d3c4ae847688877def4891943f6611ecd

Patch

Details

CVE ID CVE-2026-43369

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-2026-43369?

CVE-2026-43369 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-2026-43369 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2026-43369?

CVE-2026-43369 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-2026-43369?

Yes. CVE-2026-43369 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-2026-43369 actively exploited?

No. CVE-2026-43369 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.