{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-72326",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2026-08-09T03:40:39.919Z",
        "datePublished": "2026-08-15T05:55:36.811Z",
        "dateUpdated": "2026-08-17T05:12:32.814Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-08-17T05:12:32.814Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet/sched: cake: reject overhead values that underflow length\n\nCAKE accepts signed overhead values and stores them in an s16, but the\nadjusted packet length calculation uses unsigned arithmetic.  A negative\neffective length can therefore wrap to a large value.\n\nSuch configurations make rate accounting depend on integer wraparound\nrather than on the packet size userspace intended to model.  A static\nnetlink lower bound is not enough because packets reaching CAKE can be\nsmaller than any reasonable manual-overhead allowance.\n\nFold the signed overhead adjustment into the existing datapath MPU clamp\nso negative adjusted lengths are clamped before link-layer framing\nadjustments."
                }
            ],
            "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": "a729b7f0bd5bf4919306556aed614438f5174537",
                            "lessThan": "f511dd7bf6077aa7afbe72914520553fedaacbb4",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "a729b7f0bd5bf4919306556aed614438f5174537",
                            "lessThan": "e1df6cff03aad8c96e55a8b2a991e505c7a3ff6f",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "a729b7f0bd5bf4919306556aed614438f5174537",
                            "lessThan": "297f459865360b46a887667cbf3aac6a6f013841",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "a729b7f0bd5bf4919306556aed614438f5174537",
                            "lessThan": "336c1e414fc0e9844d445174e8ada2a7dd8d1c4b",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "a729b7f0bd5bf4919306556aed614438f5174537",
                            "lessThan": "bcdf3a3664f7d2c4e37e155f30f72ef33f041804",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "a729b7f0bd5bf4919306556aed614438f5174537",
                            "lessThan": "7aa0e64fea778a9e3df73e64da95367ff8ad2ea5",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "a729b7f0bd5bf4919306556aed614438f5174537",
                            "lessThan": "f1e7807df5bf2d42a40266430e9f82f37633cdcf",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "a729b7f0bd5bf4919306556aed614438f5174537",
                            "lessThan": "b7f97cae7ec1b6c3c32843c42be218690d310467",
                            "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": "5.10.261",
                            "lessThanOrEqual": "5.10.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.15.212",
                            "lessThanOrEqual": "5.15.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.1.178",
                            "lessThanOrEqual": "6.1.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.6.145",
                            "lessThanOrEqual": "6.6.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.12.97",
                            "lessThanOrEqual": "6.12.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.18.40",
                            "lessThanOrEqual": "6.18.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.1.5",
                            "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": "5.10.261"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.19",
                                    "versionEndExcluding": "5.15.212"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.19",
                                    "versionEndExcluding": "6.1.178"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.19",
                                    "versionEndExcluding": "6.6.145"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.19",
                                    "versionEndExcluding": "6.12.97"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.19",
                                    "versionEndExcluding": "6.18.40"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.19",
                                    "versionEndExcluding": "7.1.5"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.19",
                                    "versionEndExcluding": "7.2"
                                }
                            ]
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/f511dd7bf6077aa7afbe72914520553fedaacbb4"
                },
                {
                    "url": "https://git.kernel.org/stable/c/e1df6cff03aad8c96e55a8b2a991e505c7a3ff6f"
                },
                {
                    "url": "https://git.kernel.org/stable/c/297f459865360b46a887667cbf3aac6a6f013841"
                },
                {
                    "url": "https://git.kernel.org/stable/c/336c1e414fc0e9844d445174e8ada2a7dd8d1c4b"
                },
                {
                    "url": "https://git.kernel.org/stable/c/bcdf3a3664f7d2c4e37e155f30f72ef33f041804"
                },
                {
                    "url": "https://git.kernel.org/stable/c/7aa0e64fea778a9e3df73e64da95367ff8ad2ea5"
                },
                {
                    "url": "https://git.kernel.org/stable/c/f1e7807df5bf2d42a40266430e9f82f37633cdcf"
                },
                {
                    "url": "https://git.kernel.org/stable/c/b7f97cae7ec1b6c3c32843c42be218690d310467"
                }
            ],
            "title": "net/sched: cake: reject overhead values that underflow length",
            "x_generator": {
                "engine": "bippy-1.2.0"
            }
        }
    }
}