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9.4 Critique

CVE-2026-31685 In the Linux kernel, the following vulnerability has been resolved: netfilter: ip6t_eui64: reject invalid MAC header for…

Description

In the Linux kernel, the following vulnerability has been resolved: netfilter: ip6t_eui64: reject invalid MAC header for all packets `eui64_mt6()` derives a modified EUI-64 from the Ethernet source address and compares it with the low 64 bits of the IPv6 source address. The existing guard only rejects an invalid MAC header when `par->fragoff != 0`. For packets with `par->fragoff == 0`, `eui64_mt6()` can still reach `eth_hdr(skb)` even when the MAC header is not valid. Fix this by removing the `par->fragoff != 0` condition so that packets with an invalid MAC header are rejected before accessing `eth_hdr(skb)`.

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 2.6.12 Pas de correctif indiqué
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Produit Versions touchées Corrigé en
SIMATIC S7-1500 TM MFP - GNU/Linux subsystem Versions non publiées

Références

Chronologie

  1. Publiée
  2. Dernière modification
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