CVE-2026-98010

{"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": [{"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", "versionEndExcluding": "5.15.222"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.29", "versionEndExcluding": "6.1.189"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.29", "versionEndExcluding": "6.6.158"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.29", "versionEndExcluding": "6.12.111"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.29", "versionEndExcluding": "6.18.53"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.29", "versionEndExcluding": "7.2.7"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.29", "versionEndExcluding": "7.3"}]}]}], "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", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["net/sched/sch_drr.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "e2297bbf9cf6ece86f1d1f8c683517a994990f9e", "status": "affected", "version": "13d2a1d2b032de08d7dcab6a1edcd47802681f96", "versionType": "git"}, {"lessThan": "560794ee6e040b6e1c4ac2b3c8909f341a4596ee", "status": "affected", "version": "13d2a1d2b032de08d7dcab6a1edcd47802681f96", "versionType": "git"}, {"lessThan": "23fea7e6736b2e1c6f6f2f05cccf33d36834da73", "status": "affected", "version": "13d2a1d2b032de08d7dcab6a1edcd47802681f96", "versionType": "git"}, {"lessThan": "b464affe9f9dfe41ac48930c376e3fb8596651b0", "status": "affected", "version": "13d2a1d2b032de08d7dcab6a1edcd47802681f96", "versionType": "git"}, {"lessThan": "dc8b374214ef5bba4882bbd95b361e42555cfc0d", "status": "affected", "version": "13d2a1d2b032de08d7dcab6a1edcd47802681f96", "versionType": "git"}, {"lessThan": "d43cded350fe1218493ad3d37a276aff14108ae6", "status": "affected", "version": "13d2a1d2b032de08d7dcab6a1edcd47802681f96", "versionType": "git"}, {"lessThan": "8f756ae1c87414ce9cc21b30e6e4c036d6e9e80b", "status": "affected", "version": "13d2a1d2b032de08d7dcab6a1edcd47802681f96", "versionType": "git"}, {"lessThan": "8382abec0f1568d0a5590d75a3df92f23fcf5196", "status": "affected", "version": "13d2a1d2b032de08d7dcab6a1edcd47802681f96", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["net/sched/sch_drr.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "2.6.29"}, {"lessThan": "2.6.29", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "5.10.*", "status": "unaffected", "version": "5.10.271", "versionType": "semver"}, {"lessThanOrEqual": "5.15.*", "status": "unaffected", "version": "5.15.222", "versionType": "semver"}, {"lessThanOrEqual": "6.1.*", "status": "unaffected", "version": "6.1.189", "versionType": "semver"}, {"lessThanOrEqual": "6.6.*", "status": "unaffected", "version": "6.6.158", "versionType": "semver"}, {"lessThanOrEqual": "6.12.*", "status": "unaffected", "version": "6.12.111", "versionType": "semver"}, {"lessThanOrEqual": "6.18.*", "status": "unaffected", "version": "6.18.53", "versionType": "semver"}, {"lessThanOrEqual": "7.2.*", "status": "unaffected", "version": "7.2.7", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "7.3", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "cveTags": [], "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"}], "id": "CVE-2026-98010", "lastModified": "2026-10-19T10:17:52.400", "metrics": {}, "published": "2026-09-25T11:17:29.320", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/23fea7e6736b2e1c6f6f2f05cccf33d36834da73"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/560794ee6e040b6e1c4ac2b3c8909f341a4596ee"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/8382abec0f1568d0a5590d75a3df92f23fcf5196"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/8f756ae1c87414ce9cc21b30e6e4c036d6e9e80b"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/b464affe9f9dfe41ac48930c376e3fb8596651b0"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/d43cded350fe1218493ad3d37a276aff14108ae6"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/dc8b374214ef5bba4882bbd95b361e42555cfc0d"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/e2297bbf9cf6ece86f1d1f8c683517a994990f9e"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{"bugzilla": {"description": "kernel: net/sched: drr: clamp quantum in change class", "id": "2541141", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2541141"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.5", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-835", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nnet/sched: drr: clamp quantum in change class\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.\nAdd clamp_t(u32, quantum, 256, 1<<20) after the zero reject and on the\nfallback path. The explicit-zero reject is preserved.\nConditions to recreate the bug:\nCONFIG_NET_SCH_DRR=y. Requires CAP_NET_ADMIN (namespace-local via\nunshare -Urn suffices).\ntc qdisc add dev dummy0 root drr\ntc class add dev dummy0 parent 1: classid 1:1 drr quantum 1", "A flaw was found in the Linux kernel's Deficit Round Robin (DRR) network packet scheduler. This vulnerability allows a local user with network administration privileges to cause a Denial of Service (DoS) by configuring a traffic class with an unconstrained low quantum value. When processed with large packet lengths, this issue causes the deficit refill mechanism to loop excessively while holding a lock, leading to a system lockup."], "name": "CVE-2026-98010", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Out of support scope", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Fix deferred", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Fix deferred", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/a:redhat:openshift:4", "fix_state": "Fix deferred", "package_name": "openshift/ose-rhel-coreos-8", "product_name": "Red Hat OpenShift Container Platform 4"}, {"cpe": "cpe:/a:redhat:openshift:4", "fix_state": "Not affected", "package_name": "openshift/ose-rhel-coreos-9", "product_name": "Red Hat OpenShift Container Platform 4"}], "public_date": "2026-09-25T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-98010\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-98010\nhttps://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-98010.mbox"], "threat_severity": "Low"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[13d2a1d2b032de08d7dcab6a1edcd47802681f96,dc8b374214ef5bba4882bbd95b361e42555cfc0d)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[13d2a1d2b032de08d7dcab6a1edcd47802681f96,d43cded350fe1218493ad3d37a276aff14108ae6)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[13d2a1d2b032de08d7dcab6a1edcd47802681f96,8f756ae1c87414ce9cc21b30e6e4c036d6e9e80b)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[13d2a1d2b032de08d7dcab6a1edcd47802681f96,8382abec0f1568d0a5590d75a3df92f23fcf5196)"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "2.6.29"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[0,2.6.29)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.12.111,6.13.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.53,6.19.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.2.7,7.3.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.3-rc3,*]"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}], "created": "2026-09-25T15:30:06.905797+00:00", "updated": "2026-10-01T02:00:15.517351+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}