CVE-2026-45930 | net: mctp: ensure our nlmsg responses are initialised

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.

Published: 2026-05-27 Last update: 2026-06-09 Assigner: 416baaa9-dc9f-4396-8d5f-8c081fb06d67 Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
NVD Status：Awaiting Analysis，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2026-45930 is rated Low Risk (5.3/100): low exploitation likelihood (EPSS 0.02%). Low composite risk—no urgent action required; patch on your normal maintenance cycle and revisit priority if CVSS or EPSS increases.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2026-45930

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-05-28 — 0.02% —

Full EPSS history (1 record total)

Common vulnerability scoring system (CVSS) metrics for CVE-2026-45930

CVSS metrics for this CVE.

No CVSS data in dataset for this CVE.

Weakness enumeration for CVE-2026-45930

GitHub Security Advisory for CVE-2026-45930

GHSA-m7mh-8j45-fp89 · Severity: unknown — In the Linux kernel, the following vulnerability has been resolved: net: mctp: ensure our nlmsg...

OS Trackers for CVE-2026-45930

vendor priority summary link
debian unimportant CVE-2026-45930 unimportant priority: Debian including 1 source packages (linux), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 3, open 2. https://security-tracker.debian.org/tracker/CVE-2026-45930
redhat — — https://access.redhat.com/security/cve/CVE-2026-45930
suse — — https://www.suse.com/security/cve/CVE-2026-45930/
ubuntu medium CVE-2026-45930 medium priority: Ubuntu including 158 source packages (linux, linux-allwinner-5.19, …), 1422 status rows across 9 suites (bionic, focal, jammy, noble, questing, resolute, trusty, upstream, xenial): DNE 1024, ignored 169, needed 89, released 84, not-affected 55, needs-triage 1. https://ubuntu.com/security/CVE-2026-45930

Affected software / configurations for CVE-2026-45930

Vendor Product Version Raw CPE
No affected products in dataset.

References for CVE-2026-45930

cvelogic Threat Intelligence