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net_sched: Prevent creation of classes with TC_H_ROOT

Exact source revision recorded 23 Oct 2026 15:48:27 UTC. It does not establish the source's current position. Latest evidence.

cve-program · CVE-2025-21971

Published

Linux

Vendor product

Original vendor version evidence · not evaluated as a NuGet range
{
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "net/sched/sch_api.c"
                    ],
                    "versions": [
                        {
                            "version": "066a3b5b2346febf9a655b444567b7138e3bb939",
                            "lessThan": "e05d9938b1b0ac40b6054cc5fa0ccbd9afd5ed4c",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "066a3b5b2346febf9a655b444567b7138e3bb939",
                            "lessThan": "7a82fe67a9f4d7123d8e5ba8f0f0806c28695006",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "066a3b5b2346febf9a655b444567b7138e3bb939",
                            "lessThan": "003d92c91cdb5a64b25a9a74cb8543aac9a8bb48",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "066a3b5b2346febf9a655b444567b7138e3bb939",
                            "lessThan": "e5ee00607bbfc97ef1526ea95b6b2458ac9e7cb7",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "066a3b5b2346febf9a655b444567b7138e3bb939",
                            "lessThan": "78533c4a29ac3aeddce4b481770beaaa4f3bfb67",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "066a3b5b2346febf9a655b444567b7138e3bb939",
                            "lessThan": "5c3ca9cb48b51bd72bf76b8b05e24f3cd53db5e7",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "066a3b5b2346febf9a655b444567b7138e3bb939",
                            "lessThan": "94edfdfb9505ab608e86599d1d1e38c83816fc1c",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "066a3b5b2346febf9a655b444567b7138e3bb939",
                            "lessThan": "0c3057a5a04d07120b3d0ec9c79568fceb9c921e",
                            "status": "affected",
                            "versionType": "git"
                        }
                    ]
                }

Linux

Vendor product

Original vendor version evidence · not evaluated as a NuGet range
{
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "affected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "net/sched/sch_api.c"
                    ],
                    "versions": [
                        {
                            "version": "2.6.25",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "2.6.25",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.4.292",
                            "lessThanOrEqual": "5.4.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.10.236",
                            "lessThanOrEqual": "5.10.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.15.180",
                            "lessThanOrEqual": "5.15.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.1.132",
                            "lessThanOrEqual": "6.1.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.6.84",
                            "lessThanOrEqual": "6.6.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.12.20",
                            "lessThanOrEqual": "6.12.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.13.8",
                            "lessThanOrEqual": "6.13.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.14",
                            "lessThanOrEqual": "*",
                            "status": "unaffected",
                            "versionType": "original_commit_for_fix"
                        }
                    ]
                }

Original source record · Cite this exact observation · Complete original publisher JSON

ChangeIntel

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Sources read 9 Nov 12:54 UTC · 274 of 275 readable · 272 fully read · documentation 469/469 current