Non notée
CVE-2026-43085 netfilter: nfnetlink_log: initialize nfgenmsg in NLMSG_DONE terminator
Description
In the Linux kernel, the following vulnerability has been resolved: netfilter: nfnetlink_log: initialize nfgenmsg in NLMSG_DONE terminator When batching multiple NFLOG messages (inst->qlen > 1), __nfulnl_send() appends an NLMSG_DONE terminator with sizeof(struct nfgenmsg) payload via nlmsg_put(), but never initializes the nfgenmsg bytes. The nlmsg_put() helper only zeroes alignment padding after the payload, not the payload itself, so four bytes of stale kernel heap data are leaked to userspace in the NLMSG_DONE message body. Use nfnl_msg_put() to build the NLMSG_DONE terminator, which initializes the nfgenmsg payload via nfnl_fill_hdr(), consistent with how __build_packet_message() already constructs NFULNL_MSG_PACKET headers.
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 | 2.6.23 | 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 |
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