9.8

CVE-2025-38430: nfsd: nfsd4_spo_must_allow() must check this is a v4 compound request

Modified
AliasesUBUNTU-CVE-2025-38430DEBIAN-CVE-2025-38430
Published 25-07-2025Last modified 15-10-2026

Vulnerability summary

CVE-2025-38430 is a critical (CVSS 9.8) vulnerability in debian debian_linux. EPSS estimates a 0.59% chance of exploitation in the next 30 days, higher than 48.3% of scored vulnerabilities.

Priority
Prioritisesevere

Severe, CVSS 9.8 (CVE.org); no exploitation reported by the 5 checked sources; EPSS 1% (FIRST, 03-11-2026)

Source freshness unavailable

How is this decided?
CVSS score
9.8/10
010
Critical · v3.1 (CVE.org)
EPSS score
0.59%
0%100%
Low · +0.07 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 53 · Related 48
DLA-4327-1DLA-4328-1DSA-5973-1MGASA-2025-0218MGASA-2025-0219OPENSUSE-SU-2025:20081-1

Timeline

  1. 25-07-2025
    PublishedVulnerability first disclosed.
  2. 15-10-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: nfsd: nfsd4_spo_must_allow() must check this is a v4 compound request If the request being processed is not a v4 compound request, then examining the cstate can have undefined results. This patch adds a check that the rpc procedure being executed (rq_procinfo) is the NFSPROC4_COMPOUND procedure.

CVSS metrics

5 scores · 4 sources · 2 versions

EPSS trend

Probability

0.59%

Chance of exploitation in the next 30 days

Percentile

48%

Versus all other CVEs

30-day change

Increase +0.07 pp

From 0.52% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

No weakness data has been published for this record.

Affected systems

Version check

Known conditions: network-reachable, no authentication, no user interaction (CVSS vector). Other conditions: not stated in public data.

Ubuntu145 products
  • linuxAll versions (No fix recorded) | < 5.15.0-156.166 | < 6.8.0-100.100
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-awsAll versions (No fix recorded) | < 5.15.0-1092.99 | < 6.8.0-1046.49
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Debian2 products
Linux2 products
  • linux≥ ed94164398c935a42be7b129a478eb19c598b68a, < bf78a2706ce975981eb5167f2d3b609eb5d24c19 | ≥ ed94164398c935a42be7b129a478eb19c598b68a, < b1d0323a09a29f81572c7391e0d80d78724729c9 | ≥ ed94164398c935a42be7b129a478eb19c598b68a, < 425efc6b3292a3c79bfee4a1661cf043dcd9cf2f | ≥ ed94164398c935a42be7b129a478eb19c598b68a, < 64a723b0281ecaa59d31aad73ef8e408a84cb603 | ≥ ed94164398c935a42be7b129a478eb19c598b68a, < e7e943ddd1c6731812357a28e7954ade3a7d8517 | ≥ ed94164398c935a42be7b129a478eb19c598b68a, < 7a75a956692aa64211a9e95781af1ec461642de4 | ≥ ed94164398c935a42be7b129a478eb19c598b68a, < 2c54bd5a380ebf646fb9efbc4ae782ff3a83a5af | ≥ ed94164398c935a42be7b129a478eb19c598b68a, < 1244f0b2c3cecd3f349a877006e67c9492b41807 | 4.8
  • linux_kernel< 5.4.295 | ≥ 5.5, < 5.10.239 | ≥ 5.11, < 5.15.186 | ≥ 5.16, < 6.1.142 | ≥ 6.2, < 6.6.95 | ≥ 6.7, < 6.12.35 | ≥ 6.13, < 6.15.4

3 vendors · 149 products

References

47 links
Show all 47 references