Aller au contenu
en Se connecter
9.1 Critique

CVE-2026-52999 In the Linux kernel, the following vulnerability has been resolved: netfilter: nfnetlink_osf: fix out-of-bounds read…

Description

In the Linux kernel, the following vulnerability has been resolved: netfilter: nfnetlink_osf: fix out-of-bounds read on option matching In nf_osf_match(), the nf_osf_hdr_ctx structure is initialized once and passed by reference to nf_osf_match_one() for each fingerprint checked. During TCP option parsing, nf_osf_match_one() advances the shared ctx->optp pointer. If a fingerprint perfectly matches, the function returns early without restoring ctx->optp to its initial state. If the user has configured NF_OSF_LOGLEVEL_ALL, the loop continues to the next fingerprint. However, because ctx->optp was not restored, the next call to nf_osf_match_one() starts parsing from the end of the options buffer. This causes subsequent matches to read garbage data and fail immediately, making it impossible to log more than one match or logging incorrect matches. Instead of using a shared ctx->optp pointer, pass the context as a constant pointer and use a local pointer (optp) for TCP option traversal. This makes nf_osf_match_one() strictly stateless from the caller's perspective, ensuring every fingerprint check starts at the correct option offset.

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 5.0 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

Autres CVE de Linux

Les 18283 CVE de Linux →
CVE-2026-99270 In the Linux kernel, the following vulnerability has been resolved: tcp: Fix potential UAF in reqsk_timer_handler() 8.1 Élevée CVE-2026-99269 In the Linux kernel, the following vulnerability has been resolved: sched_ext: Wait for SCX_OPSS_DISPATCHING before… 7.8 Élevée CVE-2026-99261 In the Linux kernel, the following vulnerability has been resolved: drm/amdgpu: correct reservation fence slots for… Non notée CVE-2026-99260 In the Linux kernel, the following vulnerability has been resolved: ntfs: fix resident conversion in ntfs_new_attr_flags… Non notée
Suivre cette CVE