{"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"}}}}

{}

{"cveTags": [], "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."}], "id": "CVE-2025-40021", "lastModified": "2026-04-15T00:35:42.020", "metrics": {}, "published": "2025-10-24T13:15:47.263", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/07b1f63b5f86765793fab44d3d4c2be681cddafb"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/0d41604d2d53c1abe27fefb54b37a8f6642a4d74"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/3887f3814c0e770e6b73567fe0f83a2c01a6470c"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/456c32e3c4316654f95f9d49c12cbecfb77d5660"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/573b1e39edfcb7b4eecde0f1664455a1f4462eee"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/b47c4e06687a5a7b6c6ef4bd303fcfe4430b26bb"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/f3ac1f4eaba58e57943efa3e8b8d71fa7aab0abf"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Deferred"}

{"bugzilla": {"description": "kernel: tracing: dynevent: Add a missing lockdown check on dynevent", "id": "2406202", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2406202"}, "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"}, "details": ["No description is available for this CVE."], "name": "CVE-2025-40021", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2025-10-24T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2025-40021\nhttps://nvd.nist.gov/vuln/detail/CVE-2025-40021\nhttps://lore.kernel.org/linux-cve-announce/2025102403-CVE-2025-40021-fbe1@gregkh/T"], "threat_severity": "Low"}

{"created": "2025-10-27T22:12:55.150606+00:00", "updated": "2025-10-27T22:12:55.150632+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}