7.8

CVE-2025-39730: NFS: Fix filehandle bounds checking in nfs_fh_to_dentry()

Analyzed
AliasesUBUNTU-CVE-2025-39730DEBIAN-CVE-2025-39730
Published 07-09-2025Last modified 11-06-2026

Vulnerability summary

CVE-2025-39730 is a high (CVSS 7.8) vulnerability in debian debian_linux. EPSS estimates a 0.20% chance of exploitation in the next 30 days, higher than 9.5% of scored vulnerabilities.

Priority
Routine

Not severe (CVSS 7.8, local access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
7.8/10
010
High · v3.1 (NVD)
EPSS score
0.20%
0%100%
Low · 0.00 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 65 · Related 46
DLA-4327-1DLA-4328-1LSN-0122-1MGASA-2025-0234MGASA-2025-0235OPENSUSE-SU-2025:20081-1

Timeline

  1. 07-09-2025
    PublishedVulnerability first disclosed.
  2. 11-06-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: NFS: Fix filehandle bounds checking in nfs_fh_to_dentry() The function needs to check the minimal filehandle length before it can access the embedded filehandle.

CVSS metrics

4 scores · 3 sources · 2 versions

EPSS trend

Probability

0.20%

Chance of exploitation in the next 30 days

Percentile

10%

Versus all other CVEs

30-day change

No change 0.00 pp

From 0.20% 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: local access, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.

Ubuntu146 products
  • linuxAll versions (No fix recorded) | < 5.15.0-163.173 | < 6.8.0-100.100
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-awsAll versions (No fix recorded) | < 5.15.0-1097.104 | < 6.8.0-1046.49
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Debian2 products
  • linux< 6.1.148-1 | < 6.12.43-1 | < 6.16.3-1
  • debian_linuxEOL11.0
Linux2 products
  • linux≥ 20fa19027286983ab2734b5910c4a687436e0c31, < 7f8eca87fef7519e9c41f3258f25ebc2752247ee | ≥ 20fa19027286983ab2734b5910c4a687436e0c31, < cb09afa0948d96b1e385d609ed044bb1aa043536 | ≥ 20fa19027286983ab2734b5910c4a687436e0c31, < 3570ef5c31314c13274c935a20b91768ab5bf412 | ≥ 20fa19027286983ab2734b5910c4a687436e0c31, < 763810bb883cb4de412a72f338d80947d97df67b | ≥ 20fa19027286983ab2734b5910c4a687436e0c31, < 12ad3def2e5e0b120e3d0cb6ce8b7b796819ad40 | ≥ 20fa19027286983ab2734b5910c4a687436e0c31, < 2ad40b7992aa26bc631afc1a995b0e3ddc30de3f | ≥ 20fa19027286983ab2734b5910c4a687436e0c31, < b7f7866932466332a2528fda099000b035303485 | ≥ 20fa19027286983ab2734b5910c4a687436e0c31, < 7dd36f7477d1e03a1fcf8d13531ca326c4fb599f | ≥ 20fa19027286983ab2734b5910c4a687436e0c31, < ef93a685e01a281b5e2a25ce4e3428cf9371a205 | 4.13
  • linux_kernel≥ 4.13, < 5.4.297 | ≥ 5.5, < 5.10.241 | ≥ 5.11, < 5.15.190 | ≥ 5.16, < 6.1.148 | ≥ 6.2, < 6.6.102 | ≥ 6.7, < 6.12.42 | ≥ 6.13, < 6.15.10 | ≥ 6.16, < 6.16.1

3 vendors · 150 products

References

47 links
Show all 47 references