{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2022-49921",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2025-05-01T14:05:17.252Z",
        "datePublished": "2025-05-01T14:11:00.309Z",
        "dateUpdated": "2026-05-23T15:23:15.476Z"
    },
    "containers": {
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                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-05-23T15:23:15.476Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: sched: Fix use after free in red_enqueue()\n\nWe can't use \"skb\" again after passing it to qdisc_enqueue().  This is\nbasically identical to commit 2f09707d0c97 (\"sch_sfb: Also store skb\nlen before calling child enqueue\")."
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "net/sched/sch_red.c"
                    ],
                    "versions": [
                        {
                            "version": "d7f4f332f082c4d4ba53582f902ed6b44fd6f45e",
                            "lessThan": "795afe0b9bb6c915f0299a8e309936519be01619",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
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                            "status": "affected",
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                        },
                        {
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                            "lessThan": "52e0429471976785c155bfbf51d80990c6cd46e2",
                            "status": "affected",
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                        },
                        {
                            "version": "d7f4f332f082c4d4ba53582f902ed6b44fd6f45e",
                            "lessThan": "5960b9081baca85cc7dcb14aec1de85999ea9d36",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "d7f4f332f082c4d4ba53582f902ed6b44fd6f45e",
                            "lessThan": "fc4b50adb400ee5ec527a04073174e8e73a139fa",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "d7f4f332f082c4d4ba53582f902ed6b44fd6f45e",
                            "lessThan": "170e5317042c302777ed6d59fdb84af9b0219d4e",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "d7f4f332f082c4d4ba53582f902ed6b44fd6f45e",
                            "lessThan": "8bdc2acd420c6f3dd1f1c78750ec989f02a1e2b9",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "ab0b3b9dbf559a5633d460e748144697bd2d3aa3",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "4.4.163",
                            "lessThan": "4.5",
                            "status": "affected",
                            "versionType": "semver"
                        }
                    ]
                },
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "affected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "net/sched/sch_red.c"
                    ],
                    "versions": [
                        {
                            "version": "4.7",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "4.7",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "4.9.333",
                            "lessThanOrEqual": "4.9.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "4.14.299",
                            "lessThanOrEqual": "4.14.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "4.19.265",
                            "lessThanOrEqual": "4.19.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.4.224",
                            "lessThanOrEqual": "5.4.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.10.154",
                            "lessThanOrEqual": "5.10.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.15.78",
                            "lessThanOrEqual": "5.15.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.0.8",
                            "lessThanOrEqual": "6.0.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.1",
                            "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": "4.7",
                                    "versionEndExcluding": "4.9.333"
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                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.7",
                                    "versionEndExcluding": "4.14.299"
                                },
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                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.7",
                                    "versionEndExcluding": "4.19.265"
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                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.7",
                                    "versionEndExcluding": "6.0.8"
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                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.7",
                                    "versionEndExcluding": "6.1"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.4.163"
                                }
                            ]
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/795afe0b9bb6c915f0299a8e309936519be01619"
                },
                {
                    "url": "https://git.kernel.org/stable/c/a238cdcf2bdc72207c74375fc8be13ee549ca9db"
                },
                {
                    "url": "https://git.kernel.org/stable/c/e877f8fa49fbccc63cb2df2e9179bddc695b825a"
                },
                {
                    "url": "https://git.kernel.org/stable/c/52e0429471976785c155bfbf51d80990c6cd46e2"
                },
                {
                    "url": "https://git.kernel.org/stable/c/5960b9081baca85cc7dcb14aec1de85999ea9d36"
                },
                {
                    "url": "https://git.kernel.org/stable/c/fc4b50adb400ee5ec527a04073174e8e73a139fa"
                },
                {
                    "url": "https://git.kernel.org/stable/c/170e5317042c302777ed6d59fdb84af9b0219d4e"
                },
                {
                    "url": "https://git.kernel.org/stable/c/8bdc2acd420c6f3dd1f1c78750ec989f02a1e2b9"
                }
            ],
            "title": "net: sched: Fix use after free in red_enqueue()",
            "x_generator": {
                "engine": "bippy-1.2.0"
            }
        },
        "adp": [
            {
                "problemTypes": [
                    {
                        "descriptions": [
                            {
                                "type": "CWE",
                                "cweId": "CWE-416",
                                "lang": "en",
                                "description": "CWE-416 Use After Free"
                            }
                        ]
                    }
                ],
                "metrics": [
                    {
                        "cvssV3_1": {
                            "scope": "UNCHANGED",
                            "version": "3.1",
                            "baseScore": 7.8,
                            "attackVector": "LOCAL",
                            "baseSeverity": "HIGH",
                            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
                            "integrityImpact": "HIGH",
                            "userInteraction": "NONE",
                            "attackComplexity": "LOW",
                            "availabilityImpact": "HIGH",
                            "privilegesRequired": "LOW",
                            "confidentialityImpact": "HIGH"
                        }
                    },
                    {
                        "other": {
                            "type": "ssvc",
                            "content": {
                                "timestamp": "2025-10-01T14:58:28.989555Z",
                                "id": "CVE-2022-49921",
                                "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": "2025-10-01T14:58:31.797Z"
                }
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        ]
    }
}