{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-98010",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2026-09-25T10:19:56.068Z",
        "datePublished": "2026-09-25T10:23:34.738Z",
        "dateUpdated": "2026-10-19T09:12:15.743Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-10-19T09:12:15.743Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet/sched: drr: clamp quantum in change class\n\ndrr_change_class() rejects explicit quantum==0 but falls back to\npsched_mtu() with no floor. With a crafted size table qdisc_pkt_len\nreaches ~2 GiB, so quantum=1 (or a zero psched_mtu on a headerless\ndevice) makes the deficit-refill loop spin under the qdisc lock.\n\nAdd clamp_t(u32, quantum, 256, 1<<20) after the zero reject and on the\nfallback path. The explicit-zero reject is preserved.\n\nConditions to recreate the bug:\n  CONFIG_NET_SCH_DRR=y. Requires CAP_NET_ADMIN (namespace-local via\n  unshare -Urn suffices).\n\n  tc qdisc add dev dummy0 root drr\n  tc class add dev dummy0 parent 1: classid 1:1 drr quantum 1"
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "net/sched/sch_drr.c"
                    ],
                    "versions": [
                        {
                            "version": "13d2a1d2b032de08d7dcab6a1edcd47802681f96",
                            "lessThan": "e2297bbf9cf6ece86f1d1f8c683517a994990f9e",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "13d2a1d2b032de08d7dcab6a1edcd47802681f96",
                            "lessThan": "560794ee6e040b6e1c4ac2b3c8909f341a4596ee",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "13d2a1d2b032de08d7dcab6a1edcd47802681f96",
                            "lessThan": "23fea7e6736b2e1c6f6f2f05cccf33d36834da73",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "13d2a1d2b032de08d7dcab6a1edcd47802681f96",
                            "lessThan": "b464affe9f9dfe41ac48930c376e3fb8596651b0",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "13d2a1d2b032de08d7dcab6a1edcd47802681f96",
                            "lessThan": "dc8b374214ef5bba4882bbd95b361e42555cfc0d",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "13d2a1d2b032de08d7dcab6a1edcd47802681f96",
                            "lessThan": "d43cded350fe1218493ad3d37a276aff14108ae6",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "13d2a1d2b032de08d7dcab6a1edcd47802681f96",
                            "lessThan": "8f756ae1c87414ce9cc21b30e6e4c036d6e9e80b",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "13d2a1d2b032de08d7dcab6a1edcd47802681f96",
                            "lessThan": "8382abec0f1568d0a5590d75a3df92f23fcf5196",
                            "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_drr.c"
                    ],
                    "versions": [
                        {
                            "version": "2.6.29",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "2.6.29",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.10.271",
                            "lessThanOrEqual": "5.10.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.15.222",
                            "lessThanOrEqual": "5.15.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.1.189",
                            "lessThanOrEqual": "6.1.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.6.158",
                            "lessThanOrEqual": "6.6.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.12.111",
                            "lessThanOrEqual": "6.12.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.18.53",
                            "lessThanOrEqual": "6.18.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.2.7",
                            "lessThanOrEqual": "7.2.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.3",
                            "lessThanOrEqual": "*",
                            "status": "unaffected",
                            "versionType": "original_commit_for_fix"
                        }
                    ]
                }
            ],
            "cpeApplicability": [
                {
                    "nodes": [
                        {
                            "operator": "OR",
                            "negate": false,
                            "cpeMatch": [
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                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "2.6.29",
                                    "versionEndExcluding": "5.10.271"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "2.6.29",
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                                    "versionStartIncluding": "2.6.29",
                                    "versionEndExcluding": "7.3"
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            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/e2297bbf9cf6ece86f1d1f8c683517a994990f9e"
                },
                {
                    "url": "https://git.kernel.org/stable/c/560794ee6e040b6e1c4ac2b3c8909f341a4596ee"
                },
                {
                    "url": "https://git.kernel.org/stable/c/23fea7e6736b2e1c6f6f2f05cccf33d36834da73"
                },
                {
                    "url": "https://git.kernel.org/stable/c/b464affe9f9dfe41ac48930c376e3fb8596651b0"
                },
                {
                    "url": "https://git.kernel.org/stable/c/dc8b374214ef5bba4882bbd95b361e42555cfc0d"
                },
                {
                    "url": "https://git.kernel.org/stable/c/d43cded350fe1218493ad3d37a276aff14108ae6"
                },
                {
                    "url": "https://git.kernel.org/stable/c/8f756ae1c87414ce9cc21b30e6e4c036d6e9e80b"
                },
                {
                    "url": "https://git.kernel.org/stable/c/8382abec0f1568d0a5590d75a3df92f23fcf5196"
                }
            ],
            "title": "net/sched: drr: clamp quantum in change class",
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}