{
  "schema_version": "1.6.1",
  "id": "RPI-CVE-2025-38441",
  "modified": "2026-10-07T17:22:01Z",
  "upstream": [
    "CVE-2025-38441"
  ],
  "published": "2025-07-25T15:35:02Z",
  "summary": "netfilter: flowtable: account for Ethernet header in nf_flow_pppoe_proto()",
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nnetfilter: flowtable: account for Ethernet header in nf_flow_pppoe_proto()\n\nsyzbot found a potential access to uninit-value in nf_flow_pppoe_proto()\n\nBlamed commit forgot the Ethernet header.\n\nBUG: KMSAN: uninit-value in nf_flow_offload_inet_hook+0x7e4/0x940 net/netfilter/nf_flow_table_inet.c:27\n  nf_flow_offload_inet_hook+0x7e4/0x940 net/netfilter/nf_flow_table_inet.c:27\n  nf_hook_entry_hookfn include/linux/netfilter.h:157 [inline]\n  nf_hook_slow+0xe1/0x3d0 net/netfilter/core.c:623\n  nf_hook_ingress include/linux/netfilter_netdev.h:34 [inline]\n  nf_ingress net/core/dev.c:5742 [inline]\n  __netif_receive_skb_core+0x4aff/0x70c0 net/core/dev.c:5837\n  __netif_receive_skb_one_core net/core/dev.c:5975 [inline]\n  __netif_receive_skb+0xcc/0xac0 net/core/dev.c:6090\n  netif_receive_skb_internal net/core/dev.c:6176 [inline]\n  netif_receive_skb+0x57/0x630 net/core/dev.c:6235\n  tun_rx_batched+0x1df/0x980 drivers/net/tun.c:1485\n  tun_get_user+0x4ee0/0x6b40 drivers/net/tun.c:1938\n  tun_chr_write_iter+0x3e9/0x5c0 drivers/net/tun.c:1984\n  new_sync_write fs/read_write.c:593 [inline]\n  vfs_write+0xb4b/0x1580 fs/read_write.c:686\n  ksys_write fs/read_write.c:738 [inline]\n  __do_sys_write fs/read_write.c:749 [inline]",
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  ],
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.cve.org/CVERecord?id=CVE-2025-38441"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/a3aea97d55964e70a1e6426aa4cafdc036e8a2dd"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/eed8960b289327235185b7c32649c3470a3e969b"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/9fbc49429a23b02595ba82536c5ea425fdabb221"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/e0dd2e9729660f3f4fcb16e0aef87342911528ef"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/cfbf0665969af2c69d10c377d4c3d306e717efb4"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/18cdb3d982da8976b28d57691eb256ec5688fad2"
    }
  ],
  "database_specific": {
    "source": "https://git.kernel.org/pub/scm/linux/security/vulns.git",
    "upstream_modified": "2026-05-24T06:48:58Z"
  }
}