# CVE-2023-53007: linux: In the Linux kernel, the following vulnerability has been resolved:  tracing: Make sure trace_printk() can output as...

CVE-2023-53007 is fixed in linux on 1 platform, first by DEBIAN-CVE-2023-53007, released March 27, 2025. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2023-53007
- Priority: Routine
- CVSS: 5.5 (medium)
- EPSS: 0.0021
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Mar 27, 2025

## Description

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]   <idle>-0         0dN.2. 347519us : Unknown type 6   [    0.456075]   <idle>-0         0dN.2. 353141us : Unknown type 6   [    0.456075]   <idle>-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.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | linux Debian 12.15 (bookworm) | 6.1.11-1 | [DEBIAN-CVE-2023-53007](https://patchblox.com/security/data/fix/linux/debian-cve-2023-53007.md) | Mar 27, 2025 |
| Linux | linux Debian 13.5 (trixie) | 6.1.11-1 | [DEBIAN-CVE-2023-53007](https://patchblox.com/security/data/fix/linux/debian-cve-2023-53007.md) | Mar 27, 2025 |
| Linux | linux Debian 14 | 6.1.11-1 | [DEBIAN-CVE-2023-53007](https://patchblox.com/security/data/fix/linux/debian-cve-2023-53007.md) | Mar 27, 2025 |

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