fkie_cve-2022-48643
Vulnerability from fkie_nvd
Published
2024-04-28 13:15
Modified
2025-09-18 14:06
Severity ?
5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Summary
In the Linux kernel, the following vulnerability has been resolved: netfilter: nf_tables: fix nft_counters_enabled underflow at nf_tables_addchain() syzbot is reporting underflow of nft_counters_enabled counter at nf_tables_addchain() [1], for commit 43eb8949cfdffa76 ("netfilter: nf_tables: do not leave chain stats enabled on error") missed that nf_tables_chain_destroy() after nft_basechain_init() in the error path of nf_tables_addchain() decrements the counter because nft_basechain_init() makes nft_is_base_chain() return true by setting NFT_CHAIN_BASE flag. Increment the counter immediately after returning from nft_basechain_init().
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/710e3f526bd23a0d33435dedc52c3144de284378Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/8bcad2a931313aeba076b76922d5813ef97d0a91Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/91aa52652f4b37089aff3cb53e83049d826fef6dPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/921ebde3c0d22c8cba74ce8eb3cc4626abff1ccdPatch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/710e3f526bd23a0d33435dedc52c3144de284378Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/8bcad2a931313aeba076b76922d5813ef97d0a91Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/91aa52652f4b37089aff3cb53e83049d826fef6dPatch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/921ebde3c0d22c8cba74ce8eb3cc4626abff1ccdPatch
Impacted products
Vendor Product Version
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel 6.0
linux linux_kernel 6.0
linux linux_kernel 6.0
linux linux_kernel 6.0


To clipboard 

{
  "configurations": [
    {
      "nodes": [
        {
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  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnetfilter: nf_tables: fix nft_counters_enabled underflow at nf_tables_addchain()\n\nsyzbot is reporting underflow of nft_counters_enabled counter at\nnf_tables_addchain() [1], for commit 43eb8949cfdffa76 (\"netfilter:\nnf_tables: do not leave chain stats enabled on error\") missed that\nnf_tables_chain_destroy() after nft_basechain_init() in the error path of\nnf_tables_addchain() decrements the counter because nft_basechain_init()\nmakes nft_is_base_chain() return true by setting NFT_CHAIN_BASE flag.\n\nIncrement the counter immediately after returning from\nnft_basechain_init()."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: netfilter: nf_tables: corrige el desbordamiento de nft_counters_enabled en nf_tables_addchain() syzbot informa el desbordamiento del contador nft_counters_enabled en nf_tables_addchain() [1], para el commit 43eb8949cfdffa76 (\"netfilter: nf_tables: no salir estad\u00edsticas de cadena habilitadas en caso de error\") pas\u00f3 por alto que nf_tables_chain_destroy() despu\u00e9s de nft_basechain_init() en la ruta de error de nf_tables_addchain() disminuye el contador porque nft_basechain_init() hace que nft_is_base_chain() devuelva verdadero al configurar el indicador NFT_CHAIN_BASE. Incrementa el contador inmediatamente despu\u00e9s de regresar de nft_basechain_init()."
    }
  ],
  "id": "CVE-2022-48643",
  "lastModified": "2025-09-18T14:06:18.913",
  "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"
      }
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  },
  "published": "2024-04-28T13:15:07.040",
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  "vulnStatus": "Analyzed",
  "weaknesses": [
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          "lang": "en",
          "value": "CWE-191"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}


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