{
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "FFF78B38-3E68-45EF-A942-449C644E7C34",
              "versionEndExcluding": "6.11.7",
              "versionStartIncluding": "6.10",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:6.12:rc1:*:*:*:*:*:*",
              "matchCriteriaId": "7F361E1D-580F-4A2D-A509-7615F73167A1",
              "vulnerable": true
            },
            {
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              "matchCriteriaId": "925478D0-3E3D-4E6F-ACD5-09F28D5DF82C",
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          "negate": false,
          "operator": "OR"
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  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nlib: alloc_tag_module_unload must wait for pending kfree_rcu calls\n\nBen Greear reports following splat:\n ------------[ cut here ]------------\n net/netfilter/nf_nat_core.c:1114 module nf_nat func:nf_nat_register_fn has 256 allocated at module unload\n WARNING: CPU: 1 PID: 10421 at lib/alloc_tag.c:168 alloc_tag_module_unload+0x22b/0x3f0\n Modules linked in: nf_nat(-) btrfs ufs qnx4 hfsplus hfs minix vfat msdos fat\n...\n Hardware name: Default string Default string/SKYBAY, BIOS 5.12 08/04/2020\n RIP: 0010:alloc_tag_module_unload+0x22b/0x3f0\n  codetag_unload_module+0x19b/0x2a0\n  ? codetag_load_module+0x80/0x80\n\nnf_nat module exit calls kfree_rcu on those addresses, but the free\noperation is likely still pending by the time alloc_tag checks for leaks.\n\nWait for outstanding kfree_rcu operations to complete before checking\nresolves this warning.\n\nReproducer:\nunshare -n iptables-nft -t nat -A PREROUTING -p tcp\ngrep nf_nat /proc/allocinfo # will list 4 allocations\nrmmod nft_chain_nat\nrmmod nf_nat                # will WARN.\n\n[akpm@linux-foundation.org: add comment]"
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: lib: alloc_tag_module_unload debe esperar llamadas kfree_rcu pendientes Ben Greear informa del siguiente splat: ------------[ cortar aqu\u00ed ]------------ net/netfilter/nf_nat_core.c:1114 m\u00f3dulo nf_nat func:nf_nat_register_fn tiene 256 asignados en la descarga del m\u00f3dulo ADVERTENCIA: CPU: 1 PID: 10421 en lib/alloc_tag.c:168 alloc_tag_module_unload+0x22b/0x3f0 M\u00f3dulos vinculados en: nf_nat(-) btrfs ufs qnx4 hfsplus hfs minix vfat msdos fat ... Nombre del hardware: Cadena predeterminada Cadena predeterminada/SKYBAY, BIOS 5.12 08/04/2020 RIP: 0010:alloc_tag_module_unload+0x22b/0x3f0 codetag_unload_module+0x19b/0x2a0 ? codetag_load_module+0x80/0x80 La salida del m\u00f3dulo nf_nat llama a kfree_rcu en esas direcciones, pero es probable que la operaci\u00f3n de liberaci\u00f3n a\u00fan est\u00e9 pendiente en el momento en que alloc_tag verifique si hay fugas. Espere a que se completen las operaciones kfree_rcu pendientes antes de que la verificaci\u00f3n resuelva esta advertencia. Reproductor: unshare -n iptables-nft -t nat -A PREROUTING -p tcp grep nf_nat /proc/allocinfo # enumerar\u00e1 4 asignaciones rmmod nft_chain_nat rmmod nf_nat # emitir\u00e1 una ADVERTENCIA. [akpm@linux-foundation.org: agregar comentario]"
    }
  ],
  "id": "CVE-2024-50212",
  "lastModified": "2025-09-26T18:21:11.440",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 5.5,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 3.6,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ]
  },
  "published": "2024-11-09T11:15:04.940",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/24211fb49c9ac1b576470b7e393a5a0b50af2707"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/dc783ba4b9df3fb3e76e968b2cbeb9960069263c"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-401"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}