# CVE-2025-38660

## Summary

- **CVE ID:** CVE-2025-38660
- **Severity:** CRITICAL
- **CVSS Score:** 9.8 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H)
- **CWE:** N/A
- **Published:** Aug 22, 2025
- **Last Modified:** Sep 14, 2026

## Description

In the Linux kernel, the following vulnerability has been resolved:

[ceph] parse_longname(): strrchr() expects NUL-terminated string

... and parse_longname() is not guaranteed that.  That's the reason
why it uses kmemdup_nul() to build the argument for kstrtou64();
the problem is, kstrtou64() is not the only thing that need it.

Just get a NUL-terminated copy of the entire thing and be done
with that...

## Affected Products

- Linux — Linux (dd66df0053ef84add5e684df517aa9b498342381)
- Linux — Linux (6.6)
- Linux — Linux (0)
- Linux — Linux (6.12.42)
- Linux — Linux (6.15.10)
- Linux — Linux (6.16.1)
- Linux — Linux (6.17)
- Linux — Linux (6.6.157)

## References

- [CNA](https://git.kernel.org/stable/c/bb80f7618832d26f7e395f52f82b1dac76223e5f)
- [CNA](https://git.kernel.org/stable/c/3145b2b11492d61c512bbc59660bb823bc757f48)
- [CNA](https://git.kernel.org/stable/c/493479af8af3ab907f49e99323777d498a4fbd2b)
- [CNA](https://git.kernel.org/stable/c/101841c38346f4ca41dc1802c867da990ffb32eb)
- [CNA](https://git.kernel.org/stable/c/4b9aee707c4580511983a0998547f3b28514e6a6)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.39%
- **EPSS Percentile:** 32.6

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-17._