9.8

CVE-2025-38660: linux

CVSS: 9.8v3.1CriticalModified
AliasesUBUNTU-CVE-2025-38660DEBIAN-CVE-2025-38660
Published 22-08-2025Last modified 15-10-2026
Open JSON

Vulnerability summary

CVE-2025-38660 is a critical (CVSS 9.8) vulnerability in linux. EPSS estimates a 0.40% chance of exploitation in the next 30 days, higher than 33.5% of scored vulnerabilities.

Overall risk
70/100
0100
High · default modelHow is this calculated?
CVSS score
9.8/10
010
Critical · v3.1 (CVE.org)
EPSS score
0.40%
0%100%
Low · +0.02 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 38 · Related 38
OPENSUSE-SU-2025:20081-1SUSE-SU-2025:03600-1SUSE-SU-2025:03601-1SUSE-SU-2025:03602-1SUSE-SU-2025:03633-1SUSE-SU-2025:03634-1

Timeline

  1. 22-08-2025
    PublishedVulnerability first disclosed.
  2. 15-10-2026
    Last modifiedVulnerability information updated.

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...

CVSS metrics

4 scores · 4 sources · 1 version

EPSS trend

Probability

0.40%

Chance of exploitation in the next 30 days

Percentile

34%

Versus all other CVEs

30-day change

+0.02 pp

From 0.39% on 22-09-2026

22-09-202622-10-2026
EPSS score
0.40%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

No weakness data has been published for this record.

Affected systems

Ubuntu121 products
  • linux< 6.8.0-100.100
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-aws< 6.8.0-1046.49
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Linux2 products
  • linux≥ dd66df0053ef84add5e684df517aa9b498342381, < 4b9aee707c4580511983a0998547f3b28514e6a6 | ≥ dd66df0053ef84add5e684df517aa9b498342381, < bb80f7618832d26f7e395f52f82b1dac76223e5f | ≥ dd66df0053ef84add5e684df517aa9b498342381, < 3145b2b11492d61c512bbc59660bb823bc757f48 | ≥ dd66df0053ef84add5e684df517aa9b498342381, < 493479af8af3ab907f49e99323777d498a4fbd2b | ≥ dd66df0053ef84add5e684df517aa9b498342381, < 101841c38346f4ca41dc1802c867da990ffb32eb | 6.6
  • linux_kernel≥ 6.6, < 6.12.42 | ≥ 6.13, < 6.15.10 | ≥ 6.16, < 6.16.1
Debian1 product
  • linux< 6.12.43-1 | < 6.16.3-1

3 vendors · 124 products

References

31 links
Show all 31 references