{
  "schema_version": "1.6.1",
  "id": "RPI-CVE-2024-50130",
  "modified": "2026-10-07T17:22:01Z",
  "upstream": [
    "CVE-2024-50130"
  ],
  "published": "2024-11-05T17:11:07Z",
  "summary": "netfilter: bpf: must hold reference on net namespace",
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nnetfilter: bpf: must hold reference on net namespace\n\nBUG: KASAN: slab-use-after-free in __nf_unregister_net_hook+0x640/0x6b0\nRead of size 8 at addr ffff8880106fe400 by task repro/72=\nbpf_nf_link_release+0xda/0x1e0\nbpf_link_free+0x139/0x2d0\nbpf_link_release+0x68/0x80\n__fput+0x414/0xb60\n\nEric says:\n It seems that bpf was able to defer the __nf_unregister_net_hook()\n after exit()/close() time.\n Perhaps a netns reference is missing, because the netns has been\n dismantled/freed already.\n bpf_nf_link_attach() does :\n link->net = net;\n But I do not see a reference being taken on net.\n\nAdd such a reference and release it after hook unreg.\nNote that I was unable to get syzbot reproducer to work, so I\ndo not know if this resolves this splat.",
  "affected": [
    {
      "package": {
        "ecosystem": "Raspberry Pi OS:12",
        "name": "linux"
      },
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        "1:6.6.51-1+rpt1",
        "1:6.6.51-1+rpt2",
        "1:6.6.51-1+rpt3"
      ],
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  ],
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.cve.org/CVERecord?id=CVE-2024-50130"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/f41bd93b3e0508edc7ba820357f949071dcc0acc"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/d0d7939543a1b3bb93af9a18d258a774daf8f162"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/1230fe7ad3974f7bf6c78901473e039b34d4fb1f"
    }
  ],
  "database_specific": {
    "source": "https://git.kernel.org/pub/scm/linux/security/vulns.git",
    "upstream_modified": "2026-08-05T11:52:36Z"
  }
}
