Loading vulnerability…
CVE-2025-37799 is an information-disclosure vulnerability in the Linux kernel vmxnet3 network driver’s XDP processing path. For ring0 packet buffers, generally packets from 128 bytes through 3 KB, vmxnet3_process_xdp initialized the XDP buffer using an incorrect buffer length rather than the descriptor-reported packet length. This can cause the transmitted frame length to exceed the legitimate packet contents, appending uninitialized data from the backing kernel page to outbound traffic.
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.
8 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A Linux kernel VMware vmxnet3 driver vulnerability caused by malformed packet sizing in vmxnet3_process_xdp.
A Linux kernel vmxnet3 issue involving malformed packet sizing in vmxnet3_process_xdp.
A Linux kernel vmxnet3 network-driver XDP packet-sizing vulnerability. Incorrect buffer-length handling in vmxnet3_process_xdp can leak uninitialized kernel memory onto the network and produce oversized packets, causing MTU-related connectivity failures.
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.