What is CVE-2026-43154?

CVE-2026-43154 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10, affecting Linux kernel versions from 6.18 onward and patched in 6.18.16, 6.19.6 and 7.0. CVE-2026-43154 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2026-43154?

CVE-2026-43154 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-2026-43154?

Yes, CVE-2026-43154 has been patched. Fixed versions include 6.18.16, 6.19.6 and 7.0. If you are running Linux kernel 6.18 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2026-43154 actively exploited?

CVE-2026-43154 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2026-43154

Medium

In the Linux kernel, the following vulnerability has been resolved: erofs: fix incorrect early exits in volume label handling Crafted EROFS images containing valid volume labels can trigger incorrect early returns, leading to folio reference leaks. However, this does not cause system crashes or other severe issues.

Package Linux Kernel

Published 2026-05-06

Last modified 2026-05-13

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 6.18 and later are affected. Fixed in 6.18.16, 6.19.6, 7.0 and their respective stable series.

Affected from

≥ 6.18

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-2026-43154 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/3afa4da38802a4cba1c23848a32284e7e57b831b
Patch
Kernel patch commit
https://git.kernel.org/stable/c/8d8a878ef60801d867119b3df6a93e2982d62a71
Patch
Kernel patch commit
https://git.kernel.org/stable/c/d498bd168494ad4a4bce16192bfb9ce04ca19c9a
Patch

Details

CVE ID CVE-2026-43154

Severity Medium

CVSS score 5.5 / 10

CVSS version 3.1

Published 2026-05-06

Modified 2026-05-13

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2026-43154?

CVE-2026-43154 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10 . It affects Linux kernel versions from 6.18 onward and has been patched in 6.18.16, 6.19.6 and 7.0. CVE-2026-43154 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2026-43154?

CVE-2026-43154 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-2026-43154?

Yes — CVE-2026-43154 has been patched. Fixed versions include 6.18.16, 6.19.6 and 7.0. If you are running Linux kernel 6.18 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2026-43154 actively exploited?

No — CVE-2026-43154 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.