{
   "containers": {
      "cna": {
         "providerMetadata": {
            "orgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038"
         },
         "descriptions": [
            {
               "lang": "en",
               "value": "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": [
            {
               "product": "Linux",
               "vendor": "Linux",
               "defaultStatus": "unaffected",
               "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
               "programFiles": [
                  "net/netfilter/nf_conntrack_h323_asn1.c"
               ],
               "versions": [
                  {
                     "version": "5e35941d9901",
                     "lessThan": "98db42191329",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "5e35941d9901",
                     "lessThan": "4bafcc43baf7",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "5e35941d9901",
                     "lessThan": "ccd1108b16ab",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "5e35941d9901",
                     "lessThan": "b3c0f5538205",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "5e35941d9901",
                     "lessThan": "39001e3c4200",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "5e35941d9901",
                     "lessThan": "014a807f1cc9",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "5e35941d9901",
                     "lessThan": "80ee5054435a",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "5e35941d9901",
                     "lessThan": "767146637efc",
                     "status": "affected",
                     "versionType": "git"
                  }
               ]
            },
            {
               "product": "Linux",
               "vendor": "Linux",
               "defaultStatus": "affected",
               "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
               "programFiles": [
                  "net/netfilter/nf_conntrack_h323_asn1.c"
               ],
               "versions": [
                  {
                     "version": "2.6.17",
                     "status": "affected"
                  },
                  {
                     "version": "0",
                     "lessThan": "2.6.17",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "4.19.310",
                     "lessThanOrEqual": "4.19.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "5.4.272",
                     "lessThanOrEqual": "5.4.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "5.10.213",
                     "lessThanOrEqual": "5.10.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "5.15.152",
                     "lessThanOrEqual": "5.15.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "6.1.82",
                     "lessThanOrEqual": "6.1.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "6.6.22",
                     "lessThanOrEqual": "6.6.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "6.7.10",
                     "lessThanOrEqual": "6.7.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "6.8",
                     "lessThanOrEqual": "*",
                     "status": "unaffected",
                     "versionType": "original_commit_for_fix"
                  }
               ]
            }
         ],
         "references": [
            {
               "url": "https://git.kernel.org/stable/c/98db42191329c679f4ca52bec0b319689e1ad8cb"
            },
            {
               "url": "https://git.kernel.org/stable/c/4bafcc43baf7bcf93566394dbd15726b5b456b7a"
            },
            {
               "url": "https://git.kernel.org/stable/c/ccd1108b16ab572d9bf635586b0925635dbd6bbc"
            },
            {
               "url": "https://git.kernel.org/stable/c/b3c0f553820516ad4b62a9390ecd28d6f73a7b13"
            },
            {
               "url": "https://git.kernel.org/stable/c/39001e3c42000e7c2038717af0d33c32319ad591"
            },
            {
               "url": "https://git.kernel.org/stable/c/014a807f1cc9c9d5173c1cd935835553b00d211c"
            },
            {
               "url": "https://git.kernel.org/stable/c/80ee5054435a11c87c9a4f30f1ff750080c96416"
            },
            {
               "url": "https://git.kernel.org/stable/c/767146637efc528b5e3d31297df115e85a2fd362"
            }
         ],
         "title": "netfilter: nf_conntrack_h323: Add protection for bmp length out of range",
         "x_generator": {
            "engine": "bippy-a5840b7849dd"
         }
      }
   },
   "cveMetadata": {
      "assignerOrgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038",
      "cveID": "CVE-2024-26851",
      "requesterUserId": "gregkh@kernel.org",
      "serial": "1",
      "state": "PUBLISHED"
   },
   "dataType": "CVE_RECORD",
   "dataVersion": "5.0"
}