CVE-2025-21898
Published: April 2, 2025Last modified: April 2, 2025
Description
In the Linux kernel, the following vulnerability has been resolved: ftrace: Avoid potential division by zero in function_stat_show() Check whether denominator expression x * (x - 1) * 1000 mod {2^32, 2^64} produce zero and skip stddev computation in that case. For now don't care about rec->counter * rec->counter overflow because rec->time * rec->time overflow will likely happen earlier.
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 5.5 |
| Attack Vector | LOCAL |
| Attack complexity | LOW |
| Privileges required | LOW |
| User interaction | NONE |
| Scope | UNCHANGED |
| Confidentiality | NONE |
| Integrity impact | NONE |
| Availability impact | HIGH |
| Vector | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
Status
| Product | Release | Package | Status |
|---|---|---|---|
| Alpaquita Linux | 23 LTS | linux-lts | Fixed (6.1.130-r0) |
| Stream | linux-lts | Fixed (6.6.82-r0) |
References
- https://git.kernel.org/stable/c/3d738b53ed6cddb68e68c9874520a4bf846163b5
- https://git.kernel.org/stable/c/5b3d32f607f0478b414b16516cf27f9170cf66c8
- https://git.kernel.org/stable/c/746cc474a95473591853927b3a9792a2d671155b
- https://git.kernel.org/stable/c/992775227843c9376773784b8b362add44592ad7
- https://git.kernel.org/stable/c/9cdac46fa7e854e587eb5f393fe491b6d7a9bdf6
- https://git.kernel.org/stable/c/a1a7eb89ca0b89dc1c326eeee2596f263291aca3
- https://git.kernel.org/stable/c/ca381f60a3bb7cfaa618d73ca411610bd7fc3149
- https://git.kernel.org/stable/c/f58a3f8e284d0bdf94164a8e61cd4e70d337a1a3