What is CVE-2026-43346?

CVE-2026-43346 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10, affecting Linux kernel versions from 6.12.11 onward and patched in 6.18.24, 6.19.14 and 7.0. CVE-2026-43346 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2026-43346?

CVE-2026-43346 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-2026-43346?

Yes, CVE-2026-43346 has been patched. Fixed versions include 6.18.24, 6.19.14 and 7.0. If you are running Linux kernel 6.12.11 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2026-43346 actively exploited?

CVE-2026-43346 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2026-43346

Medium

In the Linux kernel, the following vulnerability has been resolved: ice: ptp: don't WARN when controlling PF is unavailable In VFIO passthrough setups, it is possible to pass through only a PF which doesn't own the source timer. In that case the PTP controlling PF (adapter->ctrl_pf) is never initialized in the VM, so ice_get_ctrl_ptp() returns NULL and triggers WARN_ON() in ice_ptp_setup_pf(). Since this is an expected behavior in that configuration, replace WARN_ON() with an informational message and return -EOPNOTSUPP.

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-617

CVE-2026-43346 is classified as CWE-617

See CWE-617 on MITRE CWE for full details on this weakness type.

Affected versions

Linux kernel versions 6.12.11, 6.13 and later are affected. Fixed in 6.18.24, 6.19.14, 7.0 and their respective stable series.

Affected from

≥ 6.12.11 ≥ 6.13

Fixed in

✓ 6.18.24 6.18.x ✓ 6.19.14 6.19.x ✓ 7.0

References

The following references provide additional information about CVE-2026-43346 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/bb3f21edc7056cdf44a7f7bd7ba65af40741838c
Patch
Kernel patch commit
https://git.kernel.org/stable/c/c73f365707d3b1b78b7d16e1f029020d1ae50d0f
Patch
Kernel patch commit
https://git.kernel.org/stable/c/e19675b384e9dcaca1bd5e4a67b8ad136eccfbe8
Patch

Details

CVE ID CVE-2026-43346

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-2026-43346?

CVE-2026-43346 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10 . It affects Linux kernel versions from 6.12.11 onward and has been patched in 6.18.24, 6.19.14 and 7.0. CVE-2026-43346 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2026-43346?

CVE-2026-43346 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-2026-43346?

Yes — CVE-2026-43346 has been patched. Fixed versions include 6.18.24, 6.19.14 and 7.0. If you are running Linux kernel 6.12.11 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2026-43346 actively exploited?

No — CVE-2026-43346 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.