What is CVE-2026-45930?

CVE-2026-45930 is a unscored severity Linux kernel vulnerability, affecting Linux kernel versions from 5.15 onward and patched in 6.19.4 and 7.0. CVE-2026-45930 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2026-45930?

CVE-2026-45930 has a CVSS score of pending NVD analysis out of 10, rated awaiting scoring severity.

Is there a patch available for CVE-2026-45930?

Yes, CVE-2026-45930 has been patched. Fixed versions include 6.19.4 and 7.0. If you are running Linux kernel 5.15 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2026-45930 actively exploited?

CVE-2026-45930 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2026-45930

In the Linux kernel, the following vulnerability has been resolved: net: mctp: ensure our nlmsg responses are initialised Syed Faraz Abrar (@farazsth98) from Zellic, and Pumpkin (@u1f383) from DEVCORE Research Team working with Trend Micro Zero Day Initiative report that a RTM_GETNEIGH will return uninitalised data in the pad bytes of the ndmsg data. Ensure we're initialising the netlink data to zero, in the link, addr and neigh response messages.

Package Linux Kernel

Published 2026-05-27

Last modified 2026-05-27

Patch available

Yes

Affected versions

Linux kernel versions 5.15 and later are affected. Fixed in 6.19.4, 7.0 and their respective stable series.

Affected from

≥ 5.15

Fixed in

✓ 6.19.4 6.19.x ✓ 7.0

References

The following references provide additional information about CVE-2026-45930 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/6fb6a97c86abb8592158088afaea0eb464cf9de1
Patch
Kernel patch commit
https://git.kernel.org/stable/c/a6a9bc544b675d8b5180f2718ec985ad267b5cbf
Patch

Frequently asked questions

What is CVE-2026-45930?

CVE-2026-45930 is a unscored severity Linux kernel vulnerability . It affects Linux kernel versions from 5.15 onward and has been patched in 6.19.4 and 7.0. CVE-2026-45930 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
Is there a patch available for CVE-2026-45930?

Yes — CVE-2026-45930 has been patched. Fixed versions include 6.19.4 and 7.0. If you are running Linux kernel 5.15 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2026-45930 actively exploited?

No — CVE-2026-45930 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.