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

  - af_packet: Don't send zero-byte data in tpacket_snd(). syzbot reported a WARNING in __dev_queue_xmit()     triggered via tpacket_snd(): skb_assert_len WARNING: at include/linux/skbuff.h:2753 skb_assert_len     WARNING: at __dev_queue_xmit+0x21bc/0x4970 net/core/dev.c:4781 Call Trace: <TASK> dev_queue_xmit     include/linux/netdevice.h:3448 [inline] packet_xmit+0x243/0x310 net/packet/af_packet.c:276 tpacket_snd     net/packet/af_packet.c:2907 [inline] packet_sendmsg+0x28d6/0x4eb0 net/packet/af_packet.c:3134 When sending     0-byte packets via TPACKET ring buffer on devices with no hard header (e.g. dev->hard_header_len == 0),     tpacket_fill_skb() populates an skb with skb->len == 0 and returns 0. tpacket_snd() then forwards this     empty skb to packet_xmit(), causing __dev_queue_xmit() to hit skb_assert_len(skb). Similar checks exist in     packet_snd() via commit dc633700f00f (net/af_packet: check len when min_header_len equals to 0) and in     packet_sendmsg_spkt() via commit 6a341729fb31 (af_packet: Don't send zero-byte data in     packet_sendmsg_spkt().). Return -EINVAL in tpacket_fill_skb() when skb->len is zero to reject zero-length     packets in tpacket_snd(). (CVE-2026-80742)

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

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Linux Distros Unpatched Vulnerability : CVE-2026-80742

medium Nessus Plugin ID 342757

Version 1.8

Version 1.7

Version 1.6

Version 1.4

Version 1.3

Version 1.2

Version 1.1

Version 1.8 Nov 5, 2026, 10:52 AM Detection (updated detection logic) Plugin Feed: 202611051052
Version 1.7 Nov 4, 2026, 12:13 PM Detection (updated detection logic) Plugin metadata Plugin Feed: 202611041213
Version 1.6 Oct 22, 2026, 12:02 AM CVSS metrics ("CVSSv2 vector" set to "CVSS2#AV:L/AC:L/Au:N/C:N/I:N/A:C") CVSSv2 severity (based on CVE-2026-80742, severity decreased from "High" to "Medium") Detection (updated detection logic) Plugin metadata Plugin Feed: 202610220002
Version 1.4 Oct 13, 2026, 2:52 AM Detection (updated detection logic) Plugin metadata Plugin Feed: 202610130252
Version 1.3 Sep 9, 2026, 2:39 AM CVSS metrics ("CVSSv2 vector" set to "CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:C") Detection (updated detection logic) Plugin metadata Plugin Feed: 202609090239
Version 1.2 Sep 5, 2026, 1:14 PM CVSS metrics ("CVSSv3 vector" set to "CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H") CVSSv3 severity (based on None, severity decreased from "High" to "Medium") Detection (updated detection logic) Plugin metadata CVSS metrics ("CVSSv2 score" set to 7.8) CVSS metrics ("CVSSv2 vector" set to "CVSS2#AV:A/AC:L/Au:N/C:N/I:C/A:C") CVSS metrics ("CVSSv3 score" set to 5.5) Plugin Feed: 202609051314
Version 1.1 Sep 4, 2026, 12:58 PM New Plugin Feed: 202609041258