7.3

CVE-2026-80664

netfilter: xt_nat: reject unsupported target families

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. ]
Daten sind bereitgestellt durch das CVE Programm von einer CVE Numbering Authority (CNA) (Unstrukturiert).
HerstellerLinux
≫
Produkt Linux
Default Statusunaffected
Version c7232c9979cba684c50b64c513c4a83c9aa70563
Version < 49abe564391411057a26a9a943c8e17867c3b9b4
Status affected
Version c7232c9979cba684c50b64c513c4a83c9aa70563
Version < 0afc9ad987c0faa80ab5f8d6e7815085ac8dbb82
Status affected
Version c7232c9979cba684c50b64c513c4a83c9aa70563
Version < 4fbc2bac02edabb665beb2aa87ca6f1e1d4c4777
Status affected
Version c7232c9979cba684c50b64c513c4a83c9aa70563
Version < a842dab87cab29f2a5798a47b2dc5e6a449950bf
Status affected
Version c7232c9979cba684c50b64c513c4a83c9aa70563
Version < e35c048d7511e9d4c2a537b8a231c49606e97c16
Status affected
Version c7232c9979cba684c50b64c513c4a83c9aa70563
Version < 679ced28a9dc2f6dc679eb05027d779693e60902
Status affected
Version c7232c9979cba684c50b64c513c4a83c9aa70563
Version < ec88fa71c82072e9189983b05b499d3507550271
Status affected
Version c7232c9979cba684c50b64c513c4a83c9aa70563
Version < 5d1a2240935ea47e2673d0ea17fdb058e4dc91dd
Status affected
HerstellerLinux
≫
Produkt Linux
Default Statusaffected
Version 3.7
Status affected
Version 0
Version < 3.7
Status unaffected
Version <= 5.10.*
Version 5.10.261
Status unaffected
Version <= 5.15.*
Version 5.15.212
Status unaffected
Version <= 6.1.*
Version 6.1.178
Status unaffected
Version <= 6.6.*
Version 6.6.145
Status unaffected
Version <= 6.12.*
Version 6.12.97
Status unaffected
Version <= 6.18.*
Version 6.18.40
Status unaffected
Version <= 7.1.*
Version 7.1.5
Status unaffected
Version <= *
Version 7.2
Status unaffected
VulnDex Vulnerability Enrichment
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.13% 0.027
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
416baaa9-dc9f-4396-8d5f-8c081fb06d67 7.3 1.8 5.5
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:H
Es wurden noch keine Informationen zu CWE veröffentlicht.
https://git.kernel.org/stable/c/49abe564391411057a26a9a943c8e17867c3b9b4
https://git.kernel.org/stable/c/0afc9ad987c0faa80ab5f8d6e7815085ac8dbb82
https://git.kernel.org/stable/c/4fbc2bac02edabb665beb2aa87ca6f1e1d4c4777
https://git.kernel.org/stable/c/a842dab87cab29f2a5798a47b2dc5e6a449950bf
https://git.kernel.org/stable/c/e35c048d7511e9d4c2a537b8a231c49606e97c16
https://git.kernel.org/stable/c/679ced28a9dc2f6dc679eb05027d779693e60902
https://git.kernel.org/stable/c/ec88fa71c82072e9189983b05b499d3507550271
https://git.kernel.org/stable/c/5d1a2240935ea47e2673d0ea17fdb058e4dc91dd