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9.8 Critique

CVE-2026-43011 In the Linux kernel, the following vulnerability has been resolved: net/x25: Fix potential double free of skb When…

Description

In the Linux kernel, the following vulnerability has been resolved: net/x25: Fix potential double free of skb When alloc_skb fails in x25_queue_rx_frame it calls kfree_skb(skb) at line 48 and returns 1 (error). This error propagates back through the call chain: x25_queue_rx_frame returns 1 | v x25_state3_machine receives the return value 1 and takes the else branch at line 278, setting queued=0 and returning 0 | v x25_process_rx_frame returns queued=0 | v x25_backlog_rcv at line 452 sees queued=0 and calls kfree_skb(skb) again This would free the same skb twice. Looking at x25_backlog_rcv: net/x25/x25_in.c:x25_backlog_rcv() { ... queued = x25_process_rx_frame(sk, skb); ... if (!queued) kfree_skb(skb); }

Produits et versions touchés

Produit Versions touchées Corrigé en
Linux 7.0 premières → < 7.0 7.0
Linux 6.19 premières → < 6.19.12 6.19.12
Linux 6.18 premières → < 6.18.22 6.18.22
Linux 6.12 premières → < 6.12.81 6.12.81
Linux 6.6 premières → < 6.6.134 6.6.134
Linux 6.1 premières → < 6.1.168 6.1.168
Linux 5.15 premières → < 5.15.203 5.15.203
Linux 5.10 premières → < 5.10.253 5.10.253
Linux 2.6.12 Pas de correctif indiqué
Afficher les 3 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

Références

Chronologie

  1. Publiée
  2. Dernière modification

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