{"id":"CVE-2023-53007","summary":"tracing: Make sure trace_printk() can output as soon as it can be used","details":"In the Linux kernel, the following vulnerability has been resolved:\n\ntracing: Make sure trace_printk() can output as soon as it can be used\n\nCurrently trace_printk() can be used as soon as early_trace_init() is\ncalled from start_kernel(). But if a crash happens, and\n\"ftrace_dump_on_oops\" is set on the kernel command line, all you get will\nbe:\n\n  [    0.456075]   \u003cidle\u003e-0         0dN.2. 347519us : Unknown type 6\n  [    0.456075]   \u003cidle\u003e-0         0dN.2. 353141us : Unknown type 6\n  [    0.456075]   \u003cidle\u003e-0         0dN.2. 358684us : Unknown type 6\n\nThis is because the trace_printk() event (type 6) hasn't been registered\nyet. That gets done via an early_initcall(), which may be early, but not\nearly enough.\n\nInstead of registering the trace_printk() event (and other ftrace events,\nwhich are not trace events) via an early_initcall(), have them registered at\nthe same time that trace_printk() can be used. This way, if there is a\ncrash before early_initcall(), then the trace_printk()s will actually be\nuseful.","modified":"2026-04-02T09:43:33.665607Z","published":"2025-03-27T16:43:38.102Z","related":["SUSE-SU-2025:1176-1","SUSE-SU-2025:1183-1","SUSE-SU-2025:1195-1","SUSE-SU-2025:1241-1","SUSE-SU-2025:1293-1"],"database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/53xxx/CVE-2023-53007.json","cna_assigner":"Linux"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/198c83963f6335ca6d690cff067679560f2a3a22"},{"type":"WEB","url":"https://git.kernel.org/stable/c/3bb06eb6e9acf7c4a3e1b5bc87aed398ff8e2253"},{"type":"WEB","url":"https://git.kernel.org/stable/c/76b2390fdc80c0a8300e5da5b6b62d201b6fe9ce"},{"type":"WEB","url":"https://git.kernel.org/stable/c/b0af180514edea6c83dc9a299d9f383009c99f25"},{"type":"WEB","url":"https://git.kernel.org/stable/c/b94d7c7654356860dd7719120c7d15ba38b6162a"},{"type":"WEB","url":"https://git.kernel.org/stable/c/de3930a4883ddad2244efd6d349013294c62c75c"},{"type":"WEB","url":"https://git.kernel.org/stable/c/f97eb0ab066133483a65c93eb894748de2f6b598"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/53xxx/CVE-2023-53007.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2023-53007"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"e725c731e3bb1e892e7b564c945b121cb41d1087"},{"fixed":"f97eb0ab066133483a65c93eb894748de2f6b598"},{"fixed":"b94d7c7654356860dd7719120c7d15ba38b6162a"},{"fixed":"76b2390fdc80c0a8300e5da5b6b62d201b6fe9ce"},{"fixed":"de3930a4883ddad2244efd6d349013294c62c75c"},{"fixed":"b0af180514edea6c83dc9a299d9f383009c99f25"},{"fixed":"198c83963f6335ca6d690cff067679560f2a3a22"},{"fixed":"3bb06eb6e9acf7c4a3e1b5bc87aed398ff8e2253"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2023-53007.json"}}],"schema_version":"1.7.5"}