{
  "schemaVersion": 1,
  "attribution": [
    {
      "source": "CISA Known Exploited Vulnerabilities",
      "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog",
      "licence": "US government work"
    },
    {
      "source": "GitHub Advisory Database",
      "url": "https://github.com/advisories",
      "licence": "CC BY 4.0"
    },
    {
      "source": "Have I Been Pwned",
      "url": "https://haveibeenpwned.com/",
      "licence": "CC BY 4.0"
    },
    {
      "source": "CVE Program (CVE records)",
      "url": "https://www.cve.org/Legal/TermsOfUse",
      "licence": "CVE Terms of Use",
      "notice": "Copyright © 1999-2026, The MITRE Corporation. CVE is a trademark and the CVE logo is a registered trademark of The MITRE Corporation.",
      "terms": "CVE Usage: MITRE hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute Common Vulnerabilities and Exposures (CVE™). Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy."
    },
    {
      "source": "FIRST EPSS",
      "url": "https://www.first.org/epss/",
      "licence": "free to use; FIRST requests attribution"
    }
  ],
  "record": {
    "id": "CVE-2024-26851",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2024-26851",
    "idYear": 2024,
    "status": "PUBLISHED",
    "publishedAt": "2024-04-17T10:17:15.298Z",
    "updatedAt": "2026-10-15T00:38:45.123Z",
    "importedAt": "2026-10-24T01:57:07.518Z",
    "snapshot": {
      "id": "cve_2026-10-24_midnight_baseline",
      "at": "2026-10-24T00:00:00.000Z",
      "source": "https://github.com/CVEProject/cvelistV5/releases/tag/cve_2026-10-24_0100Z"
    },
    "facts": {
      "title": "netfilter: nf_conntrack_h323: Add protection for bmp length out of range",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nnetfilter: nf_conntrack_h323: Add protection for bmp length out of range\n\nUBSAN load reports an exception of BRK#5515 SHIFT_ISSUE:Bitwise shifts\nthat are out of bounds for their data type.\n\nvmlinux   get_bitmap(b=75) + 712\n<net/netfilter/nf_conntrack_h323_asn1.c:0>\nvmlinux   decode_seq(bs=0xFFFFFFD008037000, f=0xFFFFFFD008037018, level=134443100) + 1956\n<net/netfilter/nf_conntrack_h323_asn1.c:592>\nvmlinux   decode_choice(base=0xFFFFFFD0080370F0, level=23843636) + 1216\n<net/netfilter/nf_conntrack_h323_asn1.c:814>\nvmlinux   decode_seq(f=0xFFFFFFD0080371A8, level=134443500) + 812\n<net/netfilter/nf_conntrack_h323_asn1.c:576>\nvmlinux   decode_choice(base=0xFFFFFFD008037280, level=0) + 1216\n<net/netfilter/nf_conntrack_h323_asn1.c:814>\nvmlinux   DecodeRasMessage() + 304\n<net/netfilter/nf_conntrack_h323_asn1.c:833>\nvmlinux   ras_help() + 684\n<net/netfilter/nf_conntrack_h323_main.c:1728>\nvmlinux   nf_confirm() + 188\n<net/netfilter/nf_conntrack_proto.c:137>\n\nDue to abnormal data in skb->data, the extension bitmap length\nexceeds 32 when decoding ras message then uses the length to make\na shift operation. It will change into negative after several loop.\nUBSAN load could detect a negative shift as an undefined behaviour\nand reports exception.\nSo we add the protection to avoid the length exceeding 32. Or else\nit will return out of range error and stop decoding.",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "5e35941d990123f155b02d5663e51a24f816b6f3",
              "status": "affected",
              "versionType": "git",
              "lessThan": "98db42191329c679f4ca52bec0b319689e1ad8cb"
            },
            {
              "version": "5e35941d990123f155b02d5663e51a24f816b6f3",
              "status": "affected",
              "versionType": "git",
              "lessThan": "4bafcc43baf7bcf93566394dbd15726b5b456b7a"
            },
            {
              "version": "5e35941d990123f155b02d5663e51a24f816b6f3",
              "status": "affected",
              "versionType": "git",
              "lessThan": "ccd1108b16ab572d9bf635586b0925635dbd6bbc"
            },
            {
              "version": "5e35941d990123f155b02d5663e51a24f816b6f3",
              "status": "affected",
              "versionType": "git",
              "lessThan": "b3c0f553820516ad4b62a9390ecd28d6f73a7b13"
            },
            {
              "version": "5e35941d990123f155b02d5663e51a24f816b6f3",
              "status": "affected",
              "versionType": "git",
              "lessThan": "39001e3c42000e7c2038717af0d33c32319ad591"
            },
            {
              "version": "5e35941d990123f155b02d5663e51a24f816b6f3",
              "status": "affected",
              "versionType": "git",
              "lessThan": "014a807f1cc9c9d5173c1cd935835553b00d211c"
            },
            {
              "version": "5e35941d990123f155b02d5663e51a24f816b6f3",
              "status": "affected",
              "versionType": "git",
              "lessThan": "80ee5054435a11c87c9a4f30f1ff750080c96416"
            },
            {
              "version": "5e35941d990123f155b02d5663e51a24f816b6f3",
              "status": "affected",
              "versionType": "git",
              "lessThan": "767146637efc528b5e3d31297df115e85a2fd362"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "2.6.17",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "2.6.17"
            },
            {
              "version": "4.19.310",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "4.19.*"
            },
            {
              "version": "5.4.272",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.4.*"
            },
            {
              "version": "5.10.213",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.10.*"
            },
            {
              "version": "5.15.152",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.15.*"
            },
            {
              "version": "6.1.82",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.1.*"
            },
            {
              "version": "6.6.22",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.6.*"
            },
            {
              "version": "6.7.10",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.7.*"
            },
            {
              "version": "6.8",
              "status": "unaffected",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ]
        }
      ]
    }
  }
}