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9.8 Critique

CVE-2026-52993 In the Linux kernel, the following vulnerability has been resolved: tipc: fix double-free in tipc_buf_append()…

Description

In the Linux kernel, the following vulnerability has been resolved: tipc: fix double-free in tipc_buf_append() tipc_msg_validate() can potentially reallocate the skb it is validating, freeing the old one. In tipc_buf_append(), it was being called with a pointer to a local variable which was a copy of the caller's skb pointer. If the skb was reallocated and validation subsequently failed, the error handling path would free the original skb pointer, which had already been freed, leading to double-free. Fix this by checking if head now points to a newly allocated reassembled skb. If it does, reassign *headbuf for later freeing operations.

Produits et versions touchés

Produit Versions touchées Corrigé en
Linux 7.1 premières → < 7.1 7.1
Linux 7.0 premières → < 7.0.10 7.0.10
Linux 6.18 premières → < 6.18.33 6.18.33
Linux 6.12 premières → < 6.12.91 6.12.91
Linux 6.6 premières → < 6.6.141 6.6.141
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 4.15 Pas de correctif indiqué
Afficher les 5 autres branches
Produit Versions touchées Corrigé en
Red Hat Enterprise Linux 10 Versions non publiées
Red Hat Enterprise Linux 8 Versions non publiées
Red Hat Enterprise Linux 9 Versions non publiées
Red Hat Enterprise Linux 6 Versions non publiées
Red Hat Enterprise Linux 7 Versions non publiées

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