CVE-2026-80664

CVE CVE-2026-80664EUVD EUVD-2026-67540Published 2026-08-28T06:49:07.000ZLast changed 2026-08-29T06:21:50.000ZCVSS 7.3

What the advisory describes

In the Linux kernel, the following vulnerability has been resolved: netfilter: xt_nat: reject unsupported target families xt_nat SNAT and DNAT target handlers assume IP-family conntrack state is present and can dereference a NULL pointer when instantiated from an unsupported family through nft_compat. A bridge-family compat rule can therefore trigger a NULL-dereference in nf_nat_setup_info(). Reject non-IP families in xt_nat_checkentry() so unsupported targets cannot be installed. Keep NFPROTO_INET allowed for valid inet NAT compat users and leave the runtime fast path unchanged. [ The crash was fixed via 9dbba7e694ec ("netfilter: nft_compat: ebtables emulation must reject non-bridge targets"), so this patch is no longer critical. Nevertheless, NAT is only relevant for ipv4/ipv6, so this extra family check is a good idea in any case. ]

Source: EUVD (ENISA), in the words of the advisory.

Products the advisory names

These come from the advisory itself, not from any check we performed.

Linux — Linux patch: 0; patch: 6.1.178; patch: 7.1.5; patch: 6.12.97; c7232c9979cba684c50b64c513c4a83c9aa70563 <a842dab87cab29f2a5798a47b2dc5e6a449950bf; c7232c9979cba684c50b64c513c4a83c9aa70563 <4fbc2bac02edabb665beb2aa87ca6f1e1d4c4777; c7232c9979cba684c50b64c513c4a83c9aa70563 <49abe564391411057a26a9a943c8e17867c3b9b4; patch: 5.15.212; c7232c9979cba684c50b64c513c4a83c9aa70563 <ec88fa71c82072e9189983b05b499d3507550271; patch: 7.2; patch: 6.18.40; c7232c9979cba684c50b64c513c4a83c9aa70563 <0afc9ad987c0faa80ab5f8d6e7815085ac8dbb82; c7232c9979cba684c50b64c513c4a83c9aa70563 <e35c048d7511e9d4c2a537b8a231c49606e97c16; c7232c9979cba684c50b64c513c4a83c9aa70563 <5d1a2240935ea47e2673d0ea17fdb058e4dc91dd; patch: 5.10.261; 3.7; patch: 6.6.145; c7232c9979cba684c50b64c513c4a83c9aa70563 <679ced28a9dc2f6dc679eb05027d779693e60902

The versions shown are the advisory's own. Patchlage compares no version numbers and derives no judgement from them — which version is installed is something a person has to look up.

Carried in the product catalogue

An estate covering these products can be recorded in Patchlage. An advisory about them appears in the next morning's situation report.

Linux — Linux

Does this concern one of your customers?

This page cannot answer that — it does not know your estate. Whoever has recorded their environments gets the answer the morning after publication, together with a paragraph they can forward to the customer unedited.

Try it for 28 days

Patchlage reports hits and suspected hits. About everything else this system says nothing — neither this page nor the situation report ever claims that an estate is safe.