Bug 2482010 (CVE-2026-45930) - CVE-2026-45930 kernel: net: mctp: ensure our nlmsg responses are initialised
Summary: CVE-2026-45930 kernel: net: mctp: ensure our nlmsg responses are initialised
Keywords:
Status: NEW
Alias: CVE-2026-45930
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
unspecified
unspecified
Target Milestone: ---
Assignee: Product Security
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-05-27 15:06 UTC by OSIDB Bzimport
Modified: 2026-05-28 00:52 UTC (History)
2 users (show)

Fixed In Version:
Clone Of:
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Description OSIDB Bzimport 2026-05-27 15:06:53 UTC 
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.
Comment 1 Keith Grant 2026-05-28 00:50:29 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2026052726-CVE-2026-45930-1ec6@gregkh/T
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