CVE-2026-23392 In the Linux kernel, the following vulnerability has been resolved: netfilter: nf_tables: release flowtable after rcu…
Description
In the Linux kernel, the following vulnerability has been resolved: netfilter: nf_tables: release flowtable after rcu grace period on error Call synchronize_rcu() after unregistering the hooks from error path, since a hook that already refers to this flowtable can be already registered, exposing this flowtable to packet path and nfnetlink_hook control plane. This error path is rare, it should only happen by reaching the maximum number hooks or by failing to set up to hardware offload, just call synchronize_rcu(). There is a check for already used device hooks by different flowtable that could result in EEXIST at this late stage. The hook parser can be updated to perform this check earlier to this error path really becomes rarely exercised. Uncovered by KASAN reported as use-after-free from nfnetlink_hook path when dumping hooks.
Produits et versions touchés
| Produit | Versions touchées | Corrigé en |
|---|---|---|
| Linux 7.0 | premières → < 7.0 | 7.0 |
| Linux 6.19 | premières → < 6.19.10 | 6.19.10 |
| Linux 6.18 | premières → < 6.18.20 | 6.18.20 |
| Linux 6.12 | premières → < 6.12.78 | 6.12.78 |
| Linux 6.6 | premières → < 6.6.130 | 6.6.130 |
| Linux 6.1 | premières → < 6.1.167 | 6.1.167 |
| Linux 5.15 | premières → < 5.15.224 | 5.15.224 |
| Linux 5.10 | premières → < 5.10.273 | 5.10.273 |
| Linux | 4.16 | Pas de correctif indiqué |
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| 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 |