net: mctp: ensure our nlmsg responses are initialised

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Summary

CVECVE-2026-45930
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-05-27 14:17:08 UTC
Updated2026-05-27 14:48:03 UTC
DescriptionIn 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.

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected 583be982d93479ea3d85091b0fd0b01201ede87d 6fb6a97c86abb8592158088afaea0eb464cf9de1 git Not specified
CNA Linux Linux affected 583be982d93479ea3d85091b0fd0b01201ede87d a6a9bc544b675d8b5180f2718ec985ad267b5cbf git Not specified
CNA Linux Linux affected 5.15 Not specified
CNA Linux Linux unaffected 5.15 semver Not specified
CNA Linux Linux unaffected 6.19.4 6.19.* semver Not specified
CNA Linux Linux unaffected 7.0 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/a6a9bc544b675d8b5180f2718ec985ad267b5cbf 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/6fb6a97c86abb8592158088afaea0eb464cf9de1 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
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