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CVE-2026-23293 is a Linux kernel vulnerability in the VXLAN networking subsystem. When a system is booted with the kernel parameter 'ipv6.disable=1', IPv6 initialization exits early in inet6_init() before ndisc_init() runs, leaving the IPv6 neighbor discovery table (nd_tbl) uninitialized. If an IPv6 packet is then injected into a VXLAN interface, the VXLAN transmit path can reach route_shortcircuit(), which proceeds into neigh_lookup() and dereferences the missing neighbor table, causing a kernel NULL pointer dereference. The published trace shows the crash in neigh_lookup(), reached from vxlan_xmit(). The fix adds an early check in route_shortcircuit() for ETH_P_IPV6 traffic to avoid this path when IPv6 is disabled.
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No public exploit code observed for this vulnerability.
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Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
16 sources tracked across advisories and community write-ups. News coverage will land here when it surfaces.
No news coverage yet. Advisories and community discussion only.
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Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.