CVE-2025-39697

Advisory lineage Upstream: 0 Downstream: 54
Modified
Published: 05 Sept 2025, 17:21
Last modified:12 May 2026, 12:06

Vulnerability Summary

Overall Risk (default)
low
19/100
CVSS Score
4.7 MEDIUM
v3.1 (nvd)
EPSS Score
0.02% LOW
0% probability 0.00%
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

05 Sept 2025, 17:21
Published
Vulnerability first disclosed
12 May 2026, 12:06
Last Modified
Vulnerability information updated

Description

In the Linux kernel, the following vulnerability has been resolved: NFS: Fix a race when updating an existing write After nfs_lock_and_join_requests() tests for whether the request is still attached to the mapping, nothing prevents a call to nfs_inode_remove_request() from succeeding until we actually lock the page group. The reason is that whoever called nfs_inode_remove_request() doesn't necessarily have a lock on the page group head. So in order to avoid races, let's take the page group lock earlier in nfs_lock_and_join_requests(), and hold it across the removal of the request in nfs_inode_remove_request().

CVSS Metrics

  • v3.1•MEDIUM•Score: 4.7CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H

EPSS Trends

Current EPSS score: 0.02%• Percentile: 5%

Techniques & Countermeasures

  • CWE-362•Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

    The product contains a concurrent code sequence that requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence operating concurrently.

Affected Systems

  • debian•debian_linux

    11.0

  • linux•linux

    ≥ bd37d6fce184836bd5e7cd90ce40116a4fadaf2a, < 0ff42a32784e0f2cb46a46da8e9f473538c13e1b | ≥ bd37d6fce184836bd5e7cd90ce40116a4fadaf2a, < f230d40147cc37eb3aef4d50e2e2c06ea73d9a77 | ≥ bd37d6fce184836bd5e7cd90ce40116a4fadaf2a, < c32e3c71aaa1c1ba05da88605e2ddd493c58794f | ≥ bd37d6fce184836bd5e7cd90ce40116a4fadaf2a, < 181feb41f0b268e6288bf9a7b984624d7fe2031d | ≥ bd37d6fce184836bd5e7cd90ce40116a4fadaf2a, < 92278ae36935a54e65fef9f8ea8efe7e80481ace | ≥ bd37d6fce184836bd5e7cd90ce40116a4fadaf2a, < 202a3432d21ac060629a760fff3b0a39859da3ea | ≥ bd37d6fce184836bd5e7cd90ce40116a4fadaf2a, < 76d2e3890fb169168c73f2e4f8375c7cc24a765e | 4.14

  • linux•linux_kernel

    ≥ 4.14, < 5.10.242 | ≥ 5.11, < 5.15.191 | ≥ 5.16, < 6.1.150 | ≥ 6.2, < 6.6.104 | ≥ 6.7, < 6.12.44 | ≥ 6.13, < 6.16.4 | 6.17:rc1 | 6.17:rc2

References (11)