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

  - virtio-net: fix len check in receive_big() receive_big() bounds the device-announced length by     (big_packets_num_skbfrags + 1) * PAGE_SIZE. That is still too loose: add_recvbuf_big() sets sg[1] to start     at offset sizeof(struct padded_vnet_hdr) into the first page, so the chain actually carries hdr_len +     (PAGE_SIZE - sizeof(padded_vnet_hdr)) + big_packets_num_skbfrags * PAGE_SIZE bytes -- 20 bytes less than     the check allows for the common hdr_len == 12 case. A malicious virtio backend can announce a len in that     gap. page_to_skb() then walks one frag past the page chain, storing a NULL page->private into     skb_shinfo()->frags[MAX_SKB_FRAGS], which is both an out-of-bounds write past the static frag array and a     NULL frag handed up the rx path. Bound len by the size add_recvbuf_big() actually advertised.
    (CVE-2026-64552)

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Linux Distros Unpatched Vulnerability : CVE-2026-64552

high Nessus Plugin ID 330235

Version 1.5