{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2025-40021",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2025-04-16T07:20:57.152Z",
        "datePublished": "2025-10-24T12:24:57.107Z",
        "dateUpdated": "2026-05-11T21:40:56.795Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-05-11T21:40:56.795Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ntracing: dynevent: Add a missing lockdown check on dynevent\n\nSince dynamic_events interface on tracefs is compatible with\nkprobe_events and uprobe_events, it should also check the lockdown\nstatus and reject if it is set."
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "kernel/trace/trace_dynevent.c"
                    ],
                    "versions": [
                        {
                            "version": "17911ff38aa58d3c95c07589dbf5d3564c4cf3c5",
                            "lessThan": "f3ac1f4eaba58e57943efa3e8b8d71fa7aab0abf",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "17911ff38aa58d3c95c07589dbf5d3564c4cf3c5",
                            "lessThan": "0d41604d2d53c1abe27fefb54b37a8f6642a4d74",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "17911ff38aa58d3c95c07589dbf5d3564c4cf3c5",
                            "lessThan": "07b1f63b5f86765793fab44d3d4c2be681cddafb",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "17911ff38aa58d3c95c07589dbf5d3564c4cf3c5",
                            "lessThan": "3887f3814c0e770e6b73567fe0f83a2c01a6470c",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "17911ff38aa58d3c95c07589dbf5d3564c4cf3c5",
                            "lessThan": "573b1e39edfcb7b4eecde0f1664455a1f4462eee",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "17911ff38aa58d3c95c07589dbf5d3564c4cf3c5",
                            "lessThan": "b47c4e06687a5a7b6c6ef4bd303fcfe4430b26bb",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "17911ff38aa58d3c95c07589dbf5d3564c4cf3c5",
                            "lessThan": "456c32e3c4316654f95f9d49c12cbecfb77d5660",
                            "status": "affected",
                            "versionType": "git"
                        }
                    ]
                },
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "affected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "kernel/trace/trace_dynevent.c"
                    ],
                    "versions": [
                        {
                            "version": "5.4",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "5.4",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.10.245",
                            "lessThanOrEqual": "5.10.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.15.194",
                            "lessThanOrEqual": "5.15.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.1.155",
                            "lessThanOrEqual": "6.1.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.6.109",
                            "lessThanOrEqual": "6.6.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.12.50",
                            "lessThanOrEqual": "6.12.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.16.10",
                            "lessThanOrEqual": "6.16.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.17",
                            "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": "5.4",
                                    "versionEndExcluding": "5.10.245"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.4",
                                    "versionEndExcluding": "5.15.194"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.4",
                                    "versionEndExcluding": "6.1.155"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.4",
                                    "versionEndExcluding": "6.6.109"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.4",
                                    "versionEndExcluding": "6.12.50"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.4",
                                    "versionEndExcluding": "6.16.10"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.4",
                                    "versionEndExcluding": "6.17"
                                }
                            ]
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/f3ac1f4eaba58e57943efa3e8b8d71fa7aab0abf"
                },
                {
                    "url": "https://git.kernel.org/stable/c/0d41604d2d53c1abe27fefb54b37a8f6642a4d74"
                },
                {
                    "url": "https://git.kernel.org/stable/c/07b1f63b5f86765793fab44d3d4c2be681cddafb"
                },
                {
                    "url": "https://git.kernel.org/stable/c/3887f3814c0e770e6b73567fe0f83a2c01a6470c"
                },
                {
                    "url": "https://git.kernel.org/stable/c/573b1e39edfcb7b4eecde0f1664455a1f4462eee"
                },
                {
                    "url": "https://git.kernel.org/stable/c/b47c4e06687a5a7b6c6ef4bd303fcfe4430b26bb"
                },
                {
                    "url": "https://git.kernel.org/stable/c/456c32e3c4316654f95f9d49c12cbecfb77d5660"
                }
            ],
            "title": "tracing: dynevent: Add a missing lockdown check on dynevent",
            "x_generator": {
                "engine": "bippy-1.2.0"
            }
        }
    }
}