CVE-2021-47245 (GCVE-0-2021-47245)
Vulnerability from cvelistv5
Published
2024-05-21 14:19
Modified
2026-08-05 08:46
Summary
In the Linux kernel, the following vulnerability has been resolved: netfilter: synproxy: Fix out of bounds when parsing TCP options The TCP option parser in synproxy (synproxy_parse_options) could read one byte out of bounds. When the length is 1, the execution flow gets into the loop, reads one byte of the opcode, and if the opcode is neither TCPOPT_EOL nor TCPOPT_NOP, it reads one more byte, which exceeds the length of 1. This fix is inspired by commit 9609dad263f8 ("ipv4: tcp_input: fix stack out of bounds when parsing TCP options."). v2 changes: Added an early return when length < 0 to avoid calling skb_header_pointer with negative length.
Impacted products
Vendor Product Version
Linux Linux Version: 48b1de4c110a7afa4b85862f6c75af817db26fad
Version: 48b1de4c110a7afa4b85862f6c75af817db26fad
Version: 48b1de4c110a7afa4b85862f6c75af817db26fad
Version: 48b1de4c110a7afa4b85862f6c75af817db26fad
Version: 48b1de4c110a7afa4b85862f6c75af817db26fad
Version: 48b1de4c110a7afa4b85862f6c75af817db26fad
Version: 48b1de4c110a7afa4b85862f6c75af817db26fad
Version: 48b1de4c110a7afa4b85862f6c75af817db26fad
Create a notification for this product.
Show details on NVD website


{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2021-47245",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2024-05-23T18:09:52.562711Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2024-06-04T17:13:37.955Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      },
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-04T05:32:07.394Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/e1eb98cfeafdd85537e7e3cefe93ca9bfbcc3ea8"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/576c1526b4d83c44ad7b673cb841f36cbc6cb6c4"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/674b5f0c6a4fc5d3abce877048290cea6091fcb1"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/7d9a9a1a88a3da574e019b4de756bc73337b3b0b"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/6defc77d48eff74075b80ad5925061b2fc010d98"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/9cdf299ba4e153b5e56187648420de22c6216f02"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/f648089337cb8ed40b2bb96e244f72b9d97dc96b"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/5fc177ab759418c9537433e63301096e733fb915"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "net/netfilter/nf_synproxy_core.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "e1eb98cfeafdd85537e7e3cefe93ca9bfbcc3ea8",
              "status": "affected",
              "version": "48b1de4c110a7afa4b85862f6c75af817db26fad",
              "versionType": "git"
            },
            {
              "lessThan": "576c1526b4d83c44ad7b673cb841f36cbc6cb6c4",
              "status": "affected",
              "version": "48b1de4c110a7afa4b85862f6c75af817db26fad",
              "versionType": "git"
            },
            {
              "lessThan": "674b5f0c6a4fc5d3abce877048290cea6091fcb1",
              "status": "affected",
              "version": "48b1de4c110a7afa4b85862f6c75af817db26fad",
              "versionType": "git"
            },
            {
              "lessThan": "7d9a9a1a88a3da574e019b4de756bc73337b3b0b",
              "status": "affected",
              "version": "48b1de4c110a7afa4b85862f6c75af817db26fad",
              "versionType": "git"
            },
            {
              "lessThan": "6defc77d48eff74075b80ad5925061b2fc010d98",
              "status": "affected",
              "version": "48b1de4c110a7afa4b85862f6c75af817db26fad",
              "versionType": "git"
            },
            {
              "lessThan": "9cdf299ba4e153b5e56187648420de22c6216f02",
              "status": "affected",
              "version": "48b1de4c110a7afa4b85862f6c75af817db26fad",
              "versionType": "git"
            },
            {
              "lessThan": "f648089337cb8ed40b2bb96e244f72b9d97dc96b",
              "status": "affected",
              "version": "48b1de4c110a7afa4b85862f6c75af817db26fad",
              "versionType": "git"
            },
            {
              "lessThan": "5fc177ab759418c9537433e63301096e733fb915",
              "status": "affected",
              "version": "48b1de4c110a7afa4b85862f6c75af817db26fad",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "net/netfilter/nf_synproxy_core.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "3.12"
            },
            {
              "lessThan": "3.12",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "4.4.*",
              "status": "unaffected",
              "version": "4.4.274",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "4.9.*",
              "status": "unaffected",
              "version": "4.9.274",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "4.14.*",
              "status": "unaffected",
              "version": "4.14.238",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "4.19.*",
              "status": "unaffected",
              "version": "4.19.196",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.4.*",
              "status": "unaffected",
              "version": "5.4.128",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.46",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.12.*",
              "status": "unaffected",
              "version": "5.12.13",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "5.13",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "4.4.274",
                  "versionStartIncluding": "3.12",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "4.9.274",
                  "versionStartIncluding": "3.12",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "4.14.238",
                  "versionStartIncluding": "3.12",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "4.19.196",
                  "versionStartIncluding": "3.12",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.4.128",
                  "versionStartIncluding": "3.12",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.10.46",
                  "versionStartIncluding": "3.12",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.12.13",
                  "versionStartIncluding": "3.12",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.13",
                  "versionStartIncluding": "3.12",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnetfilter: synproxy: Fix out of bounds when parsing TCP options\n\nThe TCP option parser in synproxy (synproxy_parse_options) could read\none byte out of bounds. When the length is 1, the execution flow gets\ninto the loop, reads one byte of the opcode, and if the opcode is\nneither TCPOPT_EOL nor TCPOPT_NOP, it reads one more byte, which exceeds\nthe length of 1.\n\nThis fix is inspired by commit 9609dad263f8 (\"ipv4: tcp_input: fix stack\nout of bounds when parsing TCP options.\").\n\nv2 changes:\n\nAdded an early return when length \u003c 0 to avoid calling\nskb_header_pointer with negative length."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 8.2,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H",
            "version": "3.1"
          },
          "scenarios": [
            {
              "lang": "en",
              "value": "AV:N - synproxy_parse_options runs on received TCP packets in ipt_SYNPROXY/nft_synproxy and ipv4/ipv6_synproxy_hook; SYNPROXY is deployed on internet-facing hosts to mitigate SYN floods, so a remote peer triggers it with crafted TCP options.\nAC:L - The attacker fully controls the TCP option bytes and can reliably produce length==1 (e.g., NOPs plus a non-EOL/NOP kind) so the parser reads one byte past the end of the option data; no race or external condition is required.\nPR:N - Exploitation needs only the ability to send TCP segments to a host where SYNPROXY is enabled; no authentication or local account is required on that network path.\nUI:N - The vulnerable parser runs automatically on matching inbound TCP packets; no victim user action is required.\nS:U - Impact stays within the same kernel/host security authority; there is no VM, IOMMU, or other cross-boundary escape.\nC:L - The bug is a strictly one-byte out-of-bounds read (stack buf[40] or past copied option bytes) into a local opsize; per guidance that is a limited/bounded read (C:L), not an arbitrary read primitive.\nI:N - This is a read-only OOB; the byte is only used for length checks and is not written to attacker-controlled state, so there is no integrity or write primitive.\nA:H - Out-of-bounds kernel memory access can fault or otherwise disrupt the host (and is treated as DoS by multiple vendors); when uncertain, availability is scored High."
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-05T08:46:56.392Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/e1eb98cfeafdd85537e7e3cefe93ca9bfbcc3ea8"
        },
        {
          "url": "https://git.kernel.org/stable/c/576c1526b4d83c44ad7b673cb841f36cbc6cb6c4"
        },
        {
          "url": "https://git.kernel.org/stable/c/674b5f0c6a4fc5d3abce877048290cea6091fcb1"
        },
        {
          "url": "https://git.kernel.org/stable/c/7d9a9a1a88a3da574e019b4de756bc73337b3b0b"
        },
        {
          "url": "https://git.kernel.org/stable/c/6defc77d48eff74075b80ad5925061b2fc010d98"
        },
        {
          "url": "https://git.kernel.org/stable/c/9cdf299ba4e153b5e56187648420de22c6216f02"
        },
        {
          "url": "https://git.kernel.org/stable/c/f648089337cb8ed40b2bb96e244f72b9d97dc96b"
        },
        {
          "url": "https://git.kernel.org/stable/c/5fc177ab759418c9537433e63301096e733fb915"
        }
      ],
      "title": "netfilter: synproxy: Fix out of bounds when parsing TCP options",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2021-47245",
    "datePublished": "2024-05-21T14:19:43.648Z",
    "dateReserved": "2024-04-10T18:59:19.533Z",
    "dateUpdated": "2026-08-05T08:46:56.392Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "vulnrichment": {
      "containers": "{\"adp\": [{\"title\": \"CVE Program Container\", \"references\": [{\"url\": \"https://git.kernel.org/stable/c/e1eb98cfeafdd85537e7e3cefe93ca9bfbcc3ea8\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/576c1526b4d83c44ad7b673cb841f36cbc6cb6c4\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/674b5f0c6a4fc5d3abce877048290cea6091fcb1\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/7d9a9a1a88a3da574e019b4de756bc73337b3b0b\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/6defc77d48eff74075b80ad5925061b2fc010d98\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/9cdf299ba4e153b5e56187648420de22c6216f02\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/f648089337cb8ed40b2bb96e244f72b9d97dc96b\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/5fc177ab759418c9537433e63301096e733fb915\", \"tags\": [\"x_transferred\"]}], \"providerMetadata\": {\"orgId\": \"af854a3a-2127-422b-91ae-364da2661108\", \"shortName\": \"CVE\", \"dateUpdated\": \"2024-08-04T05:32:07.394Z\"}}, {\"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2021-47245\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2024-05-23T18:09:52.562711Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2024-05-23T18:09:57.179Z\"}, \"title\": \"CISA ADP Vulnrichment\"}], \"cna\": {\"title\": \"netfilter: synproxy: Fix out of bounds when parsing TCP options\", \"metrics\": [{\"cvssV3_1\": {\"version\": \"3.1\", \"baseScore\": 8.2, \"baseSeverity\": \"HIGH\", \"vectorString\": \"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H\"}, \"scenarios\": [{\"lang\": \"en\", \"value\": \"AV:N - synproxy_parse_options runs on received TCP packets in ipt_SYNPROXY/nft_synproxy and ipv4/ipv6_synproxy_hook; SYNPROXY is deployed on internet-facing hosts to mitigate SYN floods, so a remote peer triggers it with crafted TCP options.\\nAC:L - The attacker fully controls the TCP option bytes and can reliably produce length==1 (e.g., NOPs plus a non-EOL/NOP kind) so the parser reads one byte past the end of the option data; no race or external condition is required.\\nPR:N - Exploitation needs only the ability to send TCP segments to a host where SYNPROXY is enabled; no authentication or local account is required on that network path.\\nUI:N - The vulnerable parser runs automatically on matching inbound TCP packets; no victim user action is required.\\nS:U - Impact stays within the same kernel/host security authority; there is no VM, IOMMU, or other cross-boundary escape.\\nC:L - The bug is a strictly one-byte out-of-bounds read (stack buf[40] or past copied option bytes) into a local opsize; per guidance that is a limited/bounded read (C:L), not an arbitrary read primitive.\\nI:N - This is a read-only OOB; the byte is only used for length checks and is not written to attacker-controlled state, so there is no integrity or write primitive.\\nA:H - Out-of-bounds kernel memory access can fault or otherwise disrupt the host (and is treated as DoS by multiple vendors); when uncertain, availability is scored High.\"}]}], \"affected\": [{\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"48b1de4c110a7afa4b85862f6c75af817db26fad\", \"lessThan\": \"e1eb98cfeafdd85537e7e3cefe93ca9bfbcc3ea8\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"48b1de4c110a7afa4b85862f6c75af817db26fad\", \"lessThan\": \"576c1526b4d83c44ad7b673cb841f36cbc6cb6c4\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"48b1de4c110a7afa4b85862f6c75af817db26fad\", \"lessThan\": \"674b5f0c6a4fc5d3abce877048290cea6091fcb1\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"48b1de4c110a7afa4b85862f6c75af817db26fad\", \"lessThan\": \"7d9a9a1a88a3da574e019b4de756bc73337b3b0b\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"48b1de4c110a7afa4b85862f6c75af817db26fad\", \"lessThan\": \"6defc77d48eff74075b80ad5925061b2fc010d98\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"48b1de4c110a7afa4b85862f6c75af817db26fad\", \"lessThan\": \"9cdf299ba4e153b5e56187648420de22c6216f02\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"48b1de4c110a7afa4b85862f6c75af817db26fad\", \"lessThan\": \"f648089337cb8ed40b2bb96e244f72b9d97dc96b\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"48b1de4c110a7afa4b85862f6c75af817db26fad\", \"lessThan\": \"5fc177ab759418c9537433e63301096e733fb915\", \"versionType\": \"git\"}], \"programFiles\": [\"net/netfilter/nf_synproxy_core.c\"], \"defaultStatus\": \"unaffected\"}, {\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"3.12\"}, {\"status\": \"unaffected\", \"version\": \"0\", \"lessThan\": \"3.12\", \"versionType\": \"semver\"}, {\"status\": \"unaffected\", \"version\": \"4.4.274\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"4.4.*\"}, {\"status\": \"unaffected\", \"version\": \"4.9.274\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"4.9.*\"}, {\"status\": \"unaffected\", \"version\": \"4.14.238\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"4.14.*\"}, {\"status\": \"unaffected\", \"version\": \"4.19.196\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"4.19.*\"}, {\"status\": \"unaffected\", \"version\": \"5.4.128\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.4.*\"}, {\"status\": \"unaffected\", \"version\": \"5.10.46\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.10.*\"}, {\"status\": \"unaffected\", \"version\": \"5.12.13\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.12.*\"}, {\"status\": \"unaffected\", \"version\": \"5.13\", \"versionType\": \"original_commit_for_fix\", \"lessThanOrEqual\": \"*\"}], \"programFiles\": [\"net/netfilter/nf_synproxy_core.c\"], \"defaultStatus\": \"affected\"}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/e1eb98cfeafdd85537e7e3cefe93ca9bfbcc3ea8\"}, {\"url\": \"https://git.kernel.org/stable/c/576c1526b4d83c44ad7b673cb841f36cbc6cb6c4\"}, {\"url\": \"https://git.kernel.org/stable/c/674b5f0c6a4fc5d3abce877048290cea6091fcb1\"}, {\"url\": \"https://git.kernel.org/stable/c/7d9a9a1a88a3da574e019b4de756bc73337b3b0b\"}, {\"url\": \"https://git.kernel.org/stable/c/6defc77d48eff74075b80ad5925061b2fc010d98\"}, {\"url\": \"https://git.kernel.org/stable/c/9cdf299ba4e153b5e56187648420de22c6216f02\"}, {\"url\": \"https://git.kernel.org/stable/c/f648089337cb8ed40b2bb96e244f72b9d97dc96b\"}, {\"url\": \"https://git.kernel.org/stable/c/5fc177ab759418c9537433e63301096e733fb915\"}], \"x_generator\": {\"engine\": \"bippy-1.2.0\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\nnetfilter: synproxy: Fix out of bounds when parsing TCP options\\n\\nThe TCP option parser in synproxy (synproxy_parse_options) could read\\none byte out of bounds. When the length is 1, the execution flow gets\\ninto the loop, reads one byte of the opcode, and if the opcode is\\nneither TCPOPT_EOL nor TCPOPT_NOP, it reads one more byte, which exceeds\\nthe length of 1.\\n\\nThis fix is inspired by commit 9609dad263f8 (\\\"ipv4: tcp_input: fix stack\\nout of bounds when parsing TCP options.\\\").\\n\\nv2 changes:\\n\\nAdded an early return when length \u003c 0 to avoid calling\\nskb_header_pointer with negative length.\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"4.4.274\", \"versionStartIncluding\": \"3.12\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"4.9.274\", \"versionStartIncluding\": \"3.12\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"4.14.238\", \"versionStartIncluding\": \"3.12\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"4.19.196\", \"versionStartIncluding\": \"3.12\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.4.128\", \"versionStartIncluding\": \"3.12\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.10.46\", \"versionStartIncluding\": \"3.12\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.12.13\", \"versionStartIncluding\": \"3.12\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.13\", \"versionStartIncluding\": \"3.12\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2026-08-05T08:46:56.392Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2021-47245\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-08-05T08:46:56.392Z\", \"dateReserved\": \"2024-04-10T18:59:19.533Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2024-05-21T14:19:43.648Z\", \"assignerShortName\": \"Linux\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}


Log in or create an account to share your comment.




Tags
Taxonomy of the tags.


Loading…

Loading…

Loading…

Sightings

Author Source Type Date

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
  • Confirmed: The vulnerability is confirmed from an analyst perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
  • Patched: This vulnerability was successfully patched by the user reporting the sighting.
  • Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
  • Not confirmed: The user expresses doubt about the veracity of the vulnerability.
  • Not patched: This vulnerability was not successfully patched by the user reporting the sighting.


Loading…

Loading…