Loading vulnerability…
CVE-2026-74684 is a denial-of-service vulnerability in the Linux kernel TAP driver's XDP transmit path, specifically tap_get_user_xdp(). The function parsed a virtio-net header through tun_vnet_hdr_to_skb() before associating the socket buffer with its TAP network device. For an XDP buffer containing a GSO virtio-net header with a zero protocol value, parsing can invoke dev_parse_header_protocol(), which dereferences skb->dev while it is NULL. The defect was an incomplete application of the ordering fix previously applied to tap_get_user().
Mallory correlates every CVE against your assets, your vendors, and active adversary campaigns. Know which vulnerabilities matter for you, not just which ones are loud.
What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.
What an attacker gets, and what they’ve been doing with it.
If you can’t patch tonight, do this now.
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.
2 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
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.