What is CVE-2026-43301?

CVE-2026-43301 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10, affecting Linux kernel versions from 6.8 onward and patched in 6.18.16, 6.19.6 and 7.0. CVE-2026-43301 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2026-43301?

CVE-2026-43301 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-2026-43301?

Yes, CVE-2026-43301 has been patched. Fixed versions include 6.18.16, 6.19.6 and 7.0. If you are running Linux kernel 6.8 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2026-43301 actively exploited?

CVE-2026-43301 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2026-43301

Medium

In the Linux kernel, the following vulnerability has been resolved: media: chips-media: wave5: Fix PM runtime usage count underflow Replace pm_runtime_put_sync() with pm_runtime_dont_use_autosuspend() in the remove path to properly pair with pm_runtime_use_autosuspend() from probe. This allows pm_runtime_disable() to handle reference count cleanup correctly regardless of current suspend state. The driver calls pm_runtime_put_sync() unconditionally in remove, but the device may already be suspended due to autosuspend configured in probe. When autosuspend has already suspended the device, the usage count is 0, and pm_runtime_put_sync() decrements it to -1. This causes the following warning on module unload: ------------[ cut here ]------------ WARNING: CPU: 1 PID: 963 at kernel/kthread.c:1430 kthread_destroy_worker+0x84/0x98 ... vdec 30210000.video-codec: Runtime PM usage count underflow!

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-191

CVE-2026-43301 is classified as CWE-191

See CWE-191 on MITRE CWE for full details on this weakness type.

Affected versions

Linux kernel versions 6.8 and later are affected. Fixed in 6.18.16, 6.19.6, 7.0 and their respective stable series.

Affected from

≥ 6.8

Fixed in

✓ 6.18.16 6.18.x ✓ 6.19.6 6.19.x ✓ 7.0

References

The following references provide additional information about CVE-2026-43301 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/0bffda02317989f8d5cdc2d4462a4110b1290cf0
Patch
Kernel patch commit
https://git.kernel.org/stable/c/3a278a55ead50db2444c8f01410c7f5a68723990
Patch
Kernel patch commit
https://git.kernel.org/stable/c/9cf4452e824c1e2d41c9c0b13cc8a32a0a7dec38
Patch

Details

CVE ID CVE-2026-43301

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-2026-43301?

CVE-2026-43301 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10 . It affects Linux kernel versions from 6.8 onward and has been patched in 6.18.16, 6.19.6 and 7.0. CVE-2026-43301 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2026-43301?

CVE-2026-43301 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-2026-43301?

Yes — CVE-2026-43301 has been patched. Fixed versions include 6.18.16, 6.19.6 and 7.0. If you are running Linux kernel 6.8 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2026-43301 actively exploited?

No — CVE-2026-43301 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.