{"id":"CVE-2023-53007","state":"PUBLISHED","title":"tracing: Make sure trace_printk() can output as soon as it can be used","description":"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]   <idle>-0         0dN.2. 347519us : Unknown type 6\n  [    0.456075]   <idle>-0         0dN.2. 353141us : Unknown type 6\n  [    0.456075]   <idle>-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.","publishedAt":"2025-03-27T16:43:38.102Z","updatedAt":"2026-05-11T19:36:47.776Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"e725c731e3bb1e892e7b564c945b121cb41d1087","status":"affected","lessThan":"f97eb0ab066133483a65c93eb894748de2f6b598","versionType":"git"},{"version":"e725c731e3bb1e892e7b564c945b121cb41d1087","status":"affected","lessThan":"b94d7c7654356860dd7719120c7d15ba38b6162a","versionType":"git"},{"version":"e725c731e3bb1e892e7b564c945b121cb41d1087","status":"affected","lessThan":"76b2390fdc80c0a8300e5da5b6b62d201b6fe9ce","versionType":"git"},{"version":"e725c731e3bb1e892e7b564c945b121cb41d1087","status":"affected","lessThan":"de3930a4883ddad2244efd6d349013294c62c75c","versionType":"git"},{"version":"e725c731e3bb1e892e7b564c945b121cb41d1087","status":"affected","lessThan":"b0af180514edea6c83dc9a299d9f383009c99f25","versionType":"git"},{"version":"e725c731e3bb1e892e7b564c945b121cb41d1087","status":"affected","lessThan":"198c83963f6335ca6d690cff067679560f2a3a22","versionType":"git"},{"version":"e725c731e3bb1e892e7b564c945b121cb41d1087","status":"affected","lessThan":"3bb06eb6e9acf7c4a3e1b5bc87aed398ff8e2253","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["kernel/trace/trace.c","kernel/trace/trace.h","kernel/trace/trace_output.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"4.12","status":"affected"},{"version":"0","status":"unaffected","lessThan":"4.12","versionType":"semver"},{"version":"4.14.305","status":"unaffected","lessThanOrEqual":"4.14.*","versionType":"semver"},{"version":"4.19.272","status":"unaffected","lessThanOrEqual":"4.19.*","versionType":"semver"},{"version":"5.4.231","status":"unaffected","lessThanOrEqual":"5.4.*","versionType":"semver"},{"version":"5.10.166","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.91","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.9","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.2","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["kernel/trace/trace.c","kernel/trace/trace.h","kernel/trace/trace_output.c"]}],"references":["https://git.kernel.org/stable/c/f97eb0ab066133483a65c93eb894748de2f6b598","https://git.kernel.org/stable/c/b94d7c7654356860dd7719120c7d15ba38b6162a","https://git.kernel.org/stable/c/76b2390fdc80c0a8300e5da5b6b62d201b6fe9ce","https://git.kernel.org/stable/c/de3930a4883ddad2244efd6d349013294c62c75c","https://git.kernel.org/stable/c/b0af180514edea6c83dc9a299d9f383009c99f25","https://git.kernel.org/stable/c/198c83963f6335ca6d690cff067679560f2a3a22","https://git.kernel.org/stable/c/3bb06eb6e9acf7c4a3e1b5bc87aed398ff8e2253"],"weaknesses":[],"ingestedAt":"2026-10-29T20:06:33.064Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2023/53xxx/CVE-2023-53007.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2023-53007","state":"PUBLISHED","datePublished":"2025-03-27T16:43:38.102Z","dateUpdated":"2026-05-11T19:36:47.776Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2025-03-27T16:40:15.745Z"},"containers":{"cna":{"title":"tracing: Make sure trace_printk() can output as soon as it can be used","descriptions":[{"lang":"en","value":"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]   <idle>-0         0dN.2. 347519us : Unknown type 6\n  [    0.456075]   <idle>-0         0dN.2. 353141us : Unknown type 6\n  [    0.456075]   <idle>-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."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"e725c731e3bb1e892e7b564c945b121cb41d1087","status":"affected","lessThan":"f97eb0ab066133483a65c93eb894748de2f6b598","versionType":"git"},{"version":"e725c731e3bb1e892e7b564c945b121cb41d1087","status":"affected","lessThan":"b94d7c7654356860dd7719120c7d15ba38b6162a","versionType":"git"},{"version":"e725c731e3bb1e892e7b564c945b121cb41d1087","status":"affected","lessThan":"76b2390fdc80c0a8300e5da5b6b62d201b6fe9ce","versionType":"git"},{"version":"e725c731e3bb1e892e7b564c945b121cb41d1087","status":"affected","lessThan":"de3930a4883ddad2244efd6d349013294c62c75c","versionType":"git"},{"version":"e725c731e3bb1e892e7b564c945b121cb41d1087","status":"affected","lessThan":"b0af180514edea6c83dc9a299d9f383009c99f25","versionType":"git"},{"version":"e725c731e3bb1e892e7b564c945b121cb41d1087","status":"affected","lessThan":"198c83963f6335ca6d690cff067679560f2a3a22","versionType":"git"},{"version":"e725c731e3bb1e892e7b564c945b121cb41d1087","status":"affected","lessThan":"3bb06eb6e9acf7c4a3e1b5bc87aed398ff8e2253","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["kernel/trace/trace.c","kernel/trace/trace.h","kernel/trace/trace_output.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"4.12","status":"affected"},{"version":"0","status":"unaffected","lessThan":"4.12","versionType":"semver"},{"version":"4.14.305","status":"unaffected","lessThanOrEqual":"4.14.*","versionType":"semver"},{"version":"4.19.272","status":"unaffected","lessThanOrEqual":"4.19.*","versionType":"semver"},{"version":"5.4.231","status":"unaffected","lessThanOrEqual":"5.4.*","versionType":"semver"},{"version":"5.10.166","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.91","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.9","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.2","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["kernel/trace/trace.c","kernel/trace/trace.h","kernel/trace/trace_output.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/f97eb0ab066133483a65c93eb894748de2f6b598"},{"url":"https://git.kernel.org/stable/c/b94d7c7654356860dd7719120c7d15ba38b6162a"},{"url":"https://git.kernel.org/stable/c/76b2390fdc80c0a8300e5da5b6b62d201b6fe9ce"},{"url":"https://git.kernel.org/stable/c/de3930a4883ddad2244efd6d349013294c62c75c"},{"url":"https://git.kernel.org/stable/c/b0af180514edea6c83dc9a299d9f383009c99f25"},{"url":"https://git.kernel.org/stable/c/198c83963f6335ca6d690cff067679560f2a3a22"},{"url":"https://git.kernel.org/stable/c/3bb06eb6e9acf7c4a3e1b5bc87aed398ff8e2253"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-05-11T19:36:47.776Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.12","versionEndExcluding":"4.14.305"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.12","versionEndExcluding":"4.19.272"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.12","versionEndExcluding":"5.4.231"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.12","versionEndExcluding":"5.10.166"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.12","versionEndExcluding":"5.15.91"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.12","versionEndExcluding":"6.1.9"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.12","versionEndExcluding":"6.2"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}