{"apiVersion":"1.0","identifier":"CVE-2026-80664","description":"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. ]","publishedAt":"2026-08-28T08:16:51","lastModifiedAt":"2026-08-28T08:16:51","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-80664","cvssScore":null,"cvssVector":"Pending","epssProbability":0.00176,"riskScore":0,"affectedProduct":"Linux kernel","affectedVersions":"unknown","vulnerabilityType":"Kernel","operatingSystems":[],"links":{"self":"https://www.redsauce.net/api/cves/CVE-2026-80664","webPages":{"es":"https://www.redsauce.net/es/cves/CVE-2026-80664","en":"https://www.redsauce.net/en/cves/CVE-2026-80664","fr":"https://www.redsauce.net/fr/cves/CVE-2026-80664","pt":"https://www.redsauce.net/pt/cves/CVE-2026-80664","de":"https://www.redsauce.net/de/cves/CVE-2026-80664","sk":"https://www.redsauce.net/sk/cves/CVE-2026-80664","el":"https://www.redsauce.net/el/cves/CVE-2026-80664"},"source":"https://nvd.nist.gov/vuln/detail/CVE-2026-80664"}}