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CVE-2023-42754 is a NULL pointer dereference in the Linux kernel IPv4 routing stack, in ipv4_send_dest_unreach() in net/ipv4/route.c. The function assumes that a socket buffer has an associated network device and passes dev_net(skb->dev) to __ip_options_compile(). Packets rerouted through IPVS can have skb->dev set to NULL, causing the dev_net() call to dereference a NULL device pointer. The resulting fault can panic the kernel.
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What an attacker gets, and what they’ve been doing with it.
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Patch, then assume compromise.
No public exploits tracked yet. Mallory keeps watching.
No public exploit code observed for this vulnerability.
Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.
Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
9 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
Linux kernel IPv4 NULL pointer dereference vulnerability.
Linux kernel IPv4 null-pointer dereference in ipv4_send_dest_unreach.
Linux kernel IPv4 NULL-pointer dereference vulnerability.
Linux kernel IPv4 NULL-pointer dereference vulnerability.
Query your assets running an affected version, and investigate the blast radius.
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.