{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-74704",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2026-08-15T05:44:03.927Z",
        "datePublished": "2026-08-22T15:33:03.491Z",
        "dateUpdated": "2026-08-22T15:33:03.491Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-08-22T15:33:03.491Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet/sched: sch_cake: drop WARN_ON(1) for malformed packets in ACK filter\n\nThe sch_cake ACK filter parses packets to find the TCP header and filter\nduplicated ACKs if the flow is backlogged. The parsing code contains a\nWARN_ON(1) which can be triggered by a malformed IP header in certain\ncases. Depending on the system configuration, this leads either to\neither spamming dmesg with warnings, or a panic if panic_on_warn is set.\n\nThe code already correctly skips the offending packet in the branch that\ntriggers the warning, so the WARN_ON itself doesn't really serve any\npurpose. So just drop it altogether to avoid the inconvenient side\neffects."
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "net/sched/sch_cake.c"
                    ],
                    "versions": [
                        {
                            "version": "8b7138814f29933898ecd31dfc83e35a30ee69f5",
                            "lessThan": "c1693b7844a6c06d31a565e5a494948034dfd235",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "8b7138814f29933898ecd31dfc83e35a30ee69f5",
                            "lessThan": "a4b52612004a5639c4bfc30ba93ba414b8326e2a",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "8b7138814f29933898ecd31dfc83e35a30ee69f5",
                            "lessThan": "ae1b2f8e21a41e7c7e75511bea0c4ccc59ec1bd3",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "8b7138814f29933898ecd31dfc83e35a30ee69f5",
                            "lessThan": "0c4882bff34558d8d53fb04c3e96da5c327c7dc8",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "8b7138814f29933898ecd31dfc83e35a30ee69f5",
                            "lessThan": "2504a76e5c0694e14e15562730e1339f2d9f9458",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "8b7138814f29933898ecd31dfc83e35a30ee69f5",
                            "lessThan": "cd2f1d9fe8a507c2dc86ad326fe221f121c47734",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "8b7138814f29933898ecd31dfc83e35a30ee69f5",
                            "lessThan": "a1ae353d8355407c1bea971d1c1af5e7f242bb7d",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "8b7138814f29933898ecd31dfc83e35a30ee69f5",
                            "lessThan": "2a33516f9ef59ad11844d4fc152f889449b5daf3",
                            "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/sched/sch_cake.c"
                    ],
                    "versions": [
                        {
                            "version": "4.19",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "4.19",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.10.265",
                            "lessThanOrEqual": "5.10.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.15.216",
                            "lessThanOrEqual": "5.15.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.1.183",
                            "lessThanOrEqual": "6.1.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.6.152",
                            "lessThanOrEqual": "6.6.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.12.104",
                            "lessThanOrEqual": "6.12.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.18.45",
                            "lessThanOrEqual": "6.18.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.1.9",
                            "lessThanOrEqual": "7.1.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.2",
                            "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": "4.19",
                                    "versionEndExcluding": "5.10.265"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.19",
                                    "versionEndExcluding": "5.15.216"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.19",
                                    "versionEndExcluding": "6.1.183"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.19",
                                    "versionEndExcluding": "6.6.152"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.19",
                                    "versionEndExcluding": "6.12.104"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.19",
                                    "versionEndExcluding": "6.18.45"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.19",
                                    "versionEndExcluding": "7.1.9"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.19",
                                    "versionEndExcluding": "7.2"
                                }
                            ]
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/c1693b7844a6c06d31a565e5a494948034dfd235"
                },
                {
                    "url": "https://git.kernel.org/stable/c/a4b52612004a5639c4bfc30ba93ba414b8326e2a"
                },
                {
                    "url": "https://git.kernel.org/stable/c/ae1b2f8e21a41e7c7e75511bea0c4ccc59ec1bd3"
                },
                {
                    "url": "https://git.kernel.org/stable/c/0c4882bff34558d8d53fb04c3e96da5c327c7dc8"
                },
                {
                    "url": "https://git.kernel.org/stable/c/2504a76e5c0694e14e15562730e1339f2d9f9458"
                },
                {
                    "url": "https://git.kernel.org/stable/c/cd2f1d9fe8a507c2dc86ad326fe221f121c47734"
                },
                {
                    "url": "https://git.kernel.org/stable/c/a1ae353d8355407c1bea971d1c1af5e7f242bb7d"
                },
                {
                    "url": "https://git.kernel.org/stable/c/2a33516f9ef59ad11844d4fc152f889449b5daf3"
                }
            ],
            "title": "net/sched: sch_cake: drop WARN_ON(1) for malformed packets in ACK filter",
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    }
}