{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.1",
    "cveMetadata": {
        "cveId": "CVE-2021-47367",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2024-05-21T14:58:30.810Z",
        "datePublished": "2024-05-21T15:03:33.861Z",
        "dateUpdated": "2024-08-04T05:32:08.538Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2024-05-29T05:06:44.441Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nvirtio-net: fix pages leaking when building skb in big mode\n\nWe try to use build_skb() if we had sufficient tailroom. But we forget\nto release the unused pages chained via private in big mode which will\nleak pages. Fixing this by release the pages after building the skb in\nbig mode."
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "drivers/net/virtio_net.c"
                    ],
                    "versions": [
                        {
                            "version": "fb32856b16ad",
                            "lessThan": "f020bb63b5d2",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "fb32856b16ad",
                            "lessThan": "afd92d82c9d7",
                            "status": "affected",
                            "versionType": "git"
                        }
                    ]
                },
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "affected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "drivers/net/virtio_net.c"
                    ],
                    "versions": [
                        {
                            "version": "5.13",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "5.13",
                            "status": "unaffected",
                            "versionType": "custom"
                        },
                        {
                            "version": "5.14.9",
                            "lessThanOrEqual": "5.14.*",
                            "status": "unaffected",
                            "versionType": "custom"
                        },
                        {
                            "version": "5.15",
                            "lessThanOrEqual": "*",
                            "status": "unaffected",
                            "versionType": "original_commit_for_fix"
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/f020bb63b5d2e5576acadd10e158fe3b04af67ba"
                },
                {
                    "url": "https://git.kernel.org/stable/c/afd92d82c9d715fb97565408755acad81573591a"
                }
            ],
            "title": "virtio-net: fix pages leaking when building skb in big mode",
            "x_generator": {
                "engine": "bippy-a5840b7849dd"
            }
        },
        "adp": [
            {
                "problemTypes": [
                    {
                        "descriptions": [
                            {
                                "type": "CWE",
                                "cweId": "CWE-119",
                                "lang": "en",
                                "description": "CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer"
                            }
                        ]
                    }
                ],
                "affected": [
                    {
                        "vendor": "linux",
                        "product": "linux_kernel",
                        "cpes": [
                            "cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*"
                        ],
                        "defaultStatus": "unknown",
                        "versions": [
                            {
                                "version": "5.13",
                                "status": "affected"
                            }
                        ]
                    },
                    {
                        "vendor": "linux",
                        "product": "linux_kernel",
                        "cpes": [
                            "cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*"
                        ],
                        "defaultStatus": "unknown",
                        "versions": [
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                                "version": "fb32856b16ad",
                                "status": "affected",
                                "lessThan": "f020bb63b5d2",
                                "versionType": "custom"
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                        ]
                    },
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                        "product": "linux_kernel",
                        "cpes": [
                            "cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*"
                        ],
                        "defaultStatus": "unknown",
                        "versions": [
                            {
                                "version": "fb32856b16ad",
                                "status": "affected",
                                "lessThan": "afd92d82c9d7",
                                "versionType": "custom"
                            }
                        ]
                    },
                    {
                        "vendor": "linux",
                        "product": "linux_kernel",
                        "cpes": [
                            "cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*"
                        ],
                        "defaultStatus": "unknown",
                        "versions": [
                            {
                                "version": "0",
                                "status": "unaffected",
                                "lessThan": "5.13",
                                "versionType": "custom"
                            }
                        ]
                    },
                    {
                        "vendor": "linux",
                        "product": "linux_kernel",
                        "cpes": [
                            "cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*"
                        ],
                        "defaultStatus": "unknown",
                        "versions": [
                            {
                                "version": "5.15",
                                "status": "unaffected"
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                        "product": "linux_kernel",
                        "cpes": [
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                        ],
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                        "versions": [
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                                "version": "5.14.9",
                                "status": "unaffected",
                                "lessThanOrEqual": "5.15",
                                "versionType": "custom"
                            }
                        ]
                    }
                ],
                "metrics": [
                    {
                        "cvssV3_1": {
                            "scope": "UNCHANGED",
                            "version": "3.1",
                            "baseScore": 5.5,
                            "attackVector": "LOCAL",
                            "baseSeverity": "MEDIUM",
                            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N",
                            "integrityImpact": "NONE",
                            "userInteraction": "NONE",
                            "attackComplexity": "LOW",
                            "availabilityImpact": "NONE",
                            "privilegesRequired": "LOW",
                            "confidentialityImpact": "HIGH"
                        }
                    },
                    {
                        "other": {
                            "type": "ssvc",
                            "content": {
                                "timestamp": "2024-06-06T15:00:03.181537Z",
                                "id": "CVE-2021-47367",
                                "options": [
                                    {
                                        "Exploitation": "none"
                                    },
                                    {
                                        "Automatable": "no"
                                    },
                                    {
                                        "Technical Impact": "partial"
                                    }
                                ],
                                "role": "CISA Coordinator",
                                "version": "2.0.3"
                            }
                        }
                    }
                ],
                "title": "CISA ADP Vulnrichment",
                "providerMetadata": {
                    "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
                    "shortName": "CISA-ADP",
                    "dateUpdated": "2024-06-06T15:30:00.591Z"
                }
            },
            {
                "providerMetadata": {
                    "orgId": "af854a3a-2127-422b-91ae-364da2661108",
                    "shortName": "CVE",
                    "dateUpdated": "2024-08-04T05:32:08.538Z"
                },
                "title": "CVE Program Container",
                "references": [
                    {
                        "url": "https://git.kernel.org/stable/c/f020bb63b5d2e5576acadd10e158fe3b04af67ba",
                        "tags": [
                            "x_transferred"
                        ]
                    },
                    {
                        "url": "https://git.kernel.org/stable/c/afd92d82c9d715fb97565408755acad81573591a",
                        "tags": [
                            "x_transferred"
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                ]
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        ]
    }
}