{"id":"CVE-2025-38539","revision":"9de4329f78d5493790ae72998f0e416e","records":[{"revision":"9de4329f78d5493790ae72998f0e416e","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2025-38539","aliases":[],"title":"tracing: Add down_write(trace_event_sem) when adding trace event","description":"In the Linux kernel, the following vulnerability has been resolved:\n\ntracing: Add down_write(trace_event_sem) when adding trace event\n\nWhen a module is loaded, it adds trace events defined by the module. It\nmay also need to modify the modules trace printk formats to replace enum\nnames with their values.\n\nIf two modules are loaded at the same time, the adding of the event to the\nftrace_events list can corrupt the walking of the list in the code that is\nmodifying the printk format strings and crash the kernel.\n\nThe addition of the event should take the trace_event_sem for write while\nit adds the new event.\n\nAlso add a lockdep_assert_held() on that semaphore in\n__trace_add_event_dirs() as it iterates the list.","state":0,"publishedAt":"2025-08-16T11:12:31.678+00:00","modifiedAt":"2026-10-15T21:52:19.01+00:00","affected":[{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"kernel/trace/trace_events.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"110bf2b764eb6026b868d84499263cb24b1bcc8d\",\n                            \"lessThan\": \"e70f5ee4c8824736332351b703c46f9469ed7f6c\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"110bf2b764eb6026b868d84499263cb24b1bcc8d\",\n                            \"lessThan\": \"db45632479ceecb669612ed8dbce927e3c6279fc\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"110bf2b764eb6026b868d84499263cb24b1bcc8d\",\n                            \"lessThan\": \"ca60064ea03f14e06c763de018403cb56ba3207d\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"110bf2b764eb6026b868d84499263cb24b1bcc8d\",\n                            \"lessThan\": \"7803b28c9aa8d8bd4e19ebcf5f0db9612b0f333b\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"110bf2b764eb6026b868d84499263cb24b1bcc8d\",\n                            \"lessThan\": \"6bc94f20a4c304997288f9a45278c9d0c06987d3\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"110bf2b764eb6026b868d84499263cb24b1bcc8d\",\n                            \"lessThan\": \"33e20747b47ddc03569b6bc27a2d6894c1428182\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"110bf2b764eb6026b868d84499263cb24b1bcc8d\",\n                            \"lessThan\": \"70fecd519caad0c1741c3379d5348c9000a5b29d\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"110bf2b764eb6026b868d84499263cb24b1bcc8d\",\n                            \"lessThan\": \"b5e8acc14dcb314a9b61ff19dcd9fdd0d88f70df\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        }\n                    ]\n                }"},{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"affected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"kernel/trace/trace_events.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"2.6.31\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"2.6.31\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"5.4.297\",\n                            \"lessThanOrEqual\": \"5.4.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"5.10.241\",\n                            \"lessThanOrEqual\": \"5.10.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"5.15.190\",\n                            \"lessThanOrEqual\": \"5.15.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.1.147\",\n                            \"lessThanOrEqual\": \"6.1.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.6.100\",\n                            \"lessThanOrEqual\": \"6.6.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.12.40\",\n                            \"lessThanOrEqual\": \"6.12.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.15.8\",\n                            \"lessThanOrEqual\": \"6.15.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.16\",\n                            \"lessThanOrEqual\": \"*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"original_commit_for_fix\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","score":7.8,"severity":"HIGH"}],"references":["https://git.kernel.org/stable/c/e70f5ee4c8824736332351b703c46f9469ed7f6c","https://git.kernel.org/stable/c/db45632479ceecb669612ed8dbce927e3c6279fc","https://git.kernel.org/stable/c/ca60064ea03f14e06c763de018403cb56ba3207d","https://git.kernel.org/stable/c/7803b28c9aa8d8bd4e19ebcf5f0db9612b0f333b","https://git.kernel.org/stable/c/6bc94f20a4c304997288f9a45278c9d0c06987d3","https://git.kernel.org/stable/c/33e20747b47ddc03569b6bc27a2d6894c1428182","https://git.kernel.org/stable/c/70fecd519caad0c1741c3379d5348c9000a5b29d","https://git.kernel.org/stable/c/b5e8acc14dcb314a9b61ff19dcd9fdd0d88f70df"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2025-38539","license":"CVE Program Terms of Use","key":"cve-program:CVE-2025-38539","identifiers":["CVE-2025-38539"]},"retained":false,"historicalAffected":[]}],"coverage":[]}