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CVE-2026-31681 In the Linux kernel, the following vulnerability has been resolved: netfilter: xt_multiport: validate range encoding…

Description

In the Linux kernel, the following vulnerability has been resolved: netfilter: xt_multiport: validate range encoding in checkentry ports_match_v1() treats any non-zero pflags entry as the start of a port range and unconditionally consumes the next ports[] element as the range end. The checkentry path currently validates protocol, flags and count, but it does not validate the range encoding itself. As a result, malformed rules can mark the last slot as a range start or place two range starts back to back, leaving ports_match_v1() to step past the last valid ports[] element while interpreting the rule. Reject malformed multiport v1 rules in checkentry by validating that each range start has a following element and that the following element is not itself marked as another range start.

Produits et versions touchés

Produit Versions touchées Corrigé en
Linux 7.0 premières → < 7.0 7.0
Linux 6.19 premières → < 6.19.14 6.19.14
Linux 6.18 premières → < 6.18.24 6.18.24
Linux 6.12 premières → < 6.12.83 6.12.83
Linux 6.6 premières → < 6.6.136 6.6.136
Linux 6.1 premières → < 6.1.175 6.1.175
Linux 5.15 premières → < 5.15.209 5.15.209
Linux 5.10 premières → < 5.10.258 5.10.258
Linux 2.6.17 Pas de correctif indiqué
Afficher les 4 autres branches
Produit Versions touchées Corrigé en
SIMATIC S7-1500 CPU 1518-4 PN/DP MFP 3.1 3.1.7 → dernières Pas de correctif indiqué
SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP 3.1 3.1.7 → dernières Pas de correctif indiqué
SIPLUS S7-1500 CPU 1518-4 PN/DP MFP 3.1 3.1.7 → dernières Pas de correctif indiqué
SIMATIC S7-1500 TM MFP - GNU/Linux subsystem Versions non publiées

Références

Chronologie

  1. Publiée
  2. Dernière modification

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