CVE-2025-39730
NFS: Fix filehandle bounds checking in nfs_fh_to_dentry()
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.
INFO
Published Date :
Sept. 7, 2025, 4:15 p.m.
Last Modified :
Jan. 12, 2026, 3:47 p.m.
Remotely Exploit :
No
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | HIGH | [email protected] |
Solution
- Update the Linux kernel to the latest version.
- Apply the specific NFS patch for filehandle bounds checking.
- Reboot the system after applying the update.
- Verify the NFS functionality after the update.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2025-39730.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2025-39730 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2025-39730
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2025-39730 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2025-39730 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
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Initial Analysis by [email protected]
Jan. 12, 2026
Action Type Old Value New Value Added CVSS V3.1 AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Added CWE NVD-CWE-noinfo Added CPE Configuration OR *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.16 up to (excluding) 6.1.148 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.11 up to (excluding) 5.15.190 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.5 up to (excluding) 5.10.241 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.16 up to (excluding) 6.16.1 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.13 up to (excluding) 6.15.10 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.7 up to (excluding) 6.12.42 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 4.13 up to (excluding) 5.4.297 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.2 up to (excluding) 6.6.102 Added CPE Configuration OR *cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:* Added Reference Type kernel.org: https://git.kernel.org/stable/c/12ad3def2e5e0b120e3d0cb6ce8b7b796819ad40 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/2ad40b7992aa26bc631afc1a995b0e3ddc30de3f Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/3570ef5c31314c13274c935a20b91768ab5bf412 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/763810bb883cb4de412a72f338d80947d97df67b Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/7dd36f7477d1e03a1fcf8d13531ca326c4fb599f Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/7f8eca87fef7519e9c41f3258f25ebc2752247ee Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/b7f7866932466332a2528fda099000b035303485 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/cb09afa0948d96b1e385d609ed044bb1aa043536 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/ef93a685e01a281b5e2a25ce4e3428cf9371a205 Types: Patch Added Reference Type CVE: https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html Types: Mailing List, Third Party Advisory Added Reference Type CVE: https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html Types: Mailing List, Third Party Advisory -
CVE Modified by af854a3a-2127-422b-91ae-364da2661108
Nov. 03, 2025
Action Type Old Value New Value Added Reference https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html Added Reference https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html -
New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Sep. 07, 2025
Action Type Old Value New Value Added 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. Added Reference https://git.kernel.org/stable/c/12ad3def2e5e0b120e3d0cb6ce8b7b796819ad40 Added Reference https://git.kernel.org/stable/c/2ad40b7992aa26bc631afc1a995b0e3ddc30de3f Added Reference https://git.kernel.org/stable/c/3570ef5c31314c13274c935a20b91768ab5bf412 Added Reference https://git.kernel.org/stable/c/763810bb883cb4de412a72f338d80947d97df67b Added Reference https://git.kernel.org/stable/c/7dd36f7477d1e03a1fcf8d13531ca326c4fb599f Added Reference https://git.kernel.org/stable/c/7f8eca87fef7519e9c41f3258f25ebc2752247ee Added Reference https://git.kernel.org/stable/c/b7f7866932466332a2528fda099000b035303485 Added Reference https://git.kernel.org/stable/c/cb09afa0948d96b1e385d609ed044bb1aa043536 Added Reference https://git.kernel.org/stable/c/ef93a685e01a281b5e2a25ce4e3428cf9371a205