Upstream information

CVE-2026-31738 at MITRE

Description

In the Linux kernel, the following vulnerability has been resolved:

vxlan: validate ND option lengths in vxlan_na_create

vxlan_na_create() walks ND options according to option-provided
lengths. A malformed option can make the parser advance beyond the
computed option span or use a too-short source LLADDR option payload.

Validate option lengths against the remaining NS option area before
advancing, and only read source LLADDR when the option is large enough
for an Ethernet address.

SUSE information

Overall state of this security issue: Does not affect SUSE products

SUSE Bugzilla entries: 1264059 [NEW], 1264060 [NEW]

No SUSE Security Announcements cross referenced.

SUSE Timeline for this CVE

CVE page created: Tue May 5 15:28:20 2026
CVE page last modified: Fri May 8 12:08:52 2026