ghsa-qhg6-v8xh-pwh7
Vulnerability from github
In the Linux kernel, the following vulnerability has been resolved:
tracing: Make sure trace_printk() can output as soon as it can be used
Currently trace_printk() can be used as soon as early_trace_init() is called from start_kernel(). But if a crash happens, and "ftrace_dump_on_oops" is set on the kernel command line, all you get will be:
[ 0.456075] -0 0dN.2. 347519us : Unknown type 6 [ 0.456075] -0 0dN.2. 353141us : Unknown type 6 [ 0.456075] -0 0dN.2. 358684us : Unknown type 6
This is because the trace_printk() event (type 6) hasn't been registered yet. That gets done via an early_initcall(), which may be early, but not early enough.
Instead of registering the trace_printk() event (and other ftrace events, which are not trace events) via an early_initcall(), have them registered at the same time that trace_printk() can be used. This way, if there is a crash before early_initcall(), then the trace_printk()s will actually be useful.
{
"affected": [],
"aliases": [
"CVE-2023-53007"
],
"database_specific": {
"cwe_ids": [],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-03-27T17:15:49Z",
"severity": null
},
"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\u0027t 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.",
"id": "GHSA-qhg6-v8xh-pwh7",
"modified": "2025-03-27T18:31:28Z",
"published": "2025-03-27T18:31:27Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-53007"
},
{
"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"
}
],
"schema_version": "1.4.0",
"severity": []
}
Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
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- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.