{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2021-46973",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2024-02-27T18:42:55.944Z",
        "datePublished": "2024-02-27T18:47:07.880Z",
        "dateUpdated": "2026-05-11T13:45:30.725Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-05-11T13:45:30.725Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: qrtr: Avoid potential use after free in MHI send\n\nIt is possible that the MHI ul_callback will be invoked immediately\nfollowing the queueing of the skb for transmission, leading to the\ncallback decrementing the refcount of the associated sk and freeing the\nskb.\n\nAs such the dereference of skb and the increment of the sk refcount must\nhappen before the skb is queued, to avoid the skb to be used after free\nand potentially the sk to drop its last refcount.."
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "net/qrtr/mhi.c"
                    ],
                    "versions": [
                        {
                            "version": "6e728f321393b1fce9e1c2c3e55f9f7c15991321",
                            "lessThan": "48ec949ac979b4b42d740f67b6177797af834f80",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "6e728f321393b1fce9e1c2c3e55f9f7c15991321",
                            "lessThan": "ea474054c2cc6e1284604b21361f475c7cc8c0a0",
                            "status": "affected",
                            "versionType": "git"
                        },
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                            "version": "6e728f321393b1fce9e1c2c3e55f9f7c15991321",
                            "lessThan": "03c649dee8b1eb5600212a249542a70f47a5ab40",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "6e728f321393b1fce9e1c2c3e55f9f7c15991321",
                            "lessThan": "47a017f33943278570c072bc71681809b2567b3a",
                            "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/qrtr/mhi.c"
                    ],
                    "versions": [
                        {
                            "version": "5.8",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "5.8",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.10.35",
                            "lessThanOrEqual": "5.10.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.11.19",
                            "lessThanOrEqual": "5.11.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.12.2",
                            "lessThanOrEqual": "5.12.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.13",
                            "lessThanOrEqual": "*",
                            "status": "unaffected",
                            "versionType": "original_commit_for_fix"
                        }
                    ]
                }
            ],
            "cpeApplicability": [
                {
                    "nodes": [
                        {
                            "operator": "OR",
                            "negate": false,
                            "cpeMatch": [
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.8",
                                    "versionEndExcluding": "5.10.35"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.8",
                                    "versionEndExcluding": "5.11.19"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.8",
                                    "versionEndExcluding": "5.12.2"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.8",
                                    "versionEndExcluding": "5.13"
                                }
                            ]
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/48ec949ac979b4b42d740f67b6177797af834f80"
                },
                {
                    "url": "https://git.kernel.org/stable/c/ea474054c2cc6e1284604b21361f475c7cc8c0a0"
                },
                {
                    "url": "https://git.kernel.org/stable/c/03c649dee8b1eb5600212a249542a70f47a5ab40"
                },
                {
                    "url": "https://git.kernel.org/stable/c/47a017f33943278570c072bc71681809b2567b3a"
                }
            ],
            "title": "net: qrtr: Avoid potential use after free in MHI send",
            "x_generator": {
                "engine": "bippy-1.2.0"
            }
        },
        "adp": [
            {
                "problemTypes": [
                    {
                        "descriptions": [
                            {
                                "type": "CWE",
                                "cweId": "CWE-416",
                                "lang": "en",
                                "description": "CWE-416 Use After Free"
                            }
                        ]
                    }
                ],
                "affected": [
                    {
                        "vendor": "linux",
                        "product": "linux_kernel",
                        "cpes": [
                            "cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*"
                        ],
                        "defaultStatus": "unknown",
                        "versions": [
                            {
                                "version": "6e728f321393",
                                "status": "affected",
                                "lessThan": "48ec949ac979",
                                "versionType": "git"
                            },
                            {
                                "version": "6e728f321393",
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                                "lessThan": "ea474054c2cc",
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                            },
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                                "status": "affected",
                                "lessThan": "47a017f33943",
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                            },
                            {
                                "version": "5.8",
                                "status": "affected"
                            },
                            {
                                "version": "0",
                                "status": "unaffected",
                                "lessThan": "5.8",
                                "versionType": "custom"
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                            {
                                "version": "5.10.35",
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                                "lessThanOrEqual": "5.11",
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                            {
                                "version": "5.11.19",
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                                "lessThanOrEqual": "5.12",
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                            },
                            {
                                "version": "5.12.2",
                                "status": "unaffected",
                                "lessThanOrEqual": "5.13",
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                            },
                            {
                                "version": "5.13",
                                "status": "unaffected",
                                "lessThanOrEqual": "*",
                                "versionType": "custom"
                            }
                        ]
                    }
                ],
                "metrics": [
                    {
                        "cvssV3_1": {
                            "scope": "UNCHANGED",
                            "version": "3.1",
                            "baseScore": 8.4,
                            "attackVector": "LOCAL",
                            "baseSeverity": "HIGH",
                            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
                            "integrityImpact": "HIGH",
                            "userInteraction": "NONE",
                            "attackComplexity": "LOW",
                            "availabilityImpact": "HIGH",
                            "privilegesRequired": "NONE",
                            "confidentialityImpact": "HIGH"
                        }
                    },
                    {
                        "other": {
                            "type": "ssvc",
                            "content": {
                                "timestamp": "2024-02-28T18:49:05.463431Z",
                                "id": "CVE-2021-46973",
                                "options": [
                                    {
                                        "Exploitation": "none"
                                    },
                                    {
                                        "Automatable": "no"
                                    },
                                    {
                                        "Technical Impact": "total"
                                    }
                                ],
                                "role": "CISA Coordinator",
                                "version": "2.0.3"
                            }
                        }
                    }
                ],
                "title": "CISA ADP Vulnrichment",
                "providerMetadata": {
                    "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
                    "shortName": "CISA-ADP",
                    "dateUpdated": "2024-07-25T15:54:16.377Z"
                }
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                    "shortName": "CVE",
                    "dateUpdated": "2024-08-04T05:17:42.894Z"
                },
                "title": "CVE Program Container",
                "references": [
                    {
                        "url": "https://git.kernel.org/stable/c/48ec949ac979b4b42d740f67b6177797af834f80",
                        "tags": [
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                    },
                    {
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