The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - tun: free page on short-frame rejection in tun_xdp_one() tun_xdp_one() returns -EINVAL on a frame shorter     than ETH_HLEN without freeing the page that vhost_net_build_xdp() allocated for it. tun_sendmsg() discards     that -EINVAL and still returns total_len, so vhost_tx_batch() takes the success path and never frees the     page; each short frame in a batch leaks one page-frag chunk. A local process that can open /dev/net/tun     and /dev/vhost-net can hit this path: it attaches a tun/tap device as the vhost-net backend and feeds TX     descriptors whose length minus the virtio-net header is below ETH_HLEN. Each kick leaks the page-frag     chunks for that batch, and a tight submission loop exhausts host memory and triggers an OOM panic. Free     the page before returning -EINVAL, matching the XDP-program error path in the same function.
    (CVE-2026-46321)

Note that Nessus relies on the presence of the package as reported by the vendor.

Detections

Analytics

Linux Distros Unpatched Vulnerability : CVE-2026-46321

high Nessus Plugin ID 320148

Version 1.2

Version 1.1

Version 1.2 Jun 10, 2026, 6:51 AM CVSS metrics ("CVSSv2 score" set to 5.6) CVSS metrics ("CVSSv2 vector" set to "CVSS2#AV:L/AC:L/Au:N/C:N/I:P/A:C") Detection (updated detection logic) Plugin metadata Plugin Feed: 202606100651
Version 1.1 Jun 10, 2026, 12:51 AM New Plugin Feed: 202606100051