CVEvulnerability

CVE-2025-39697

4.7 MEDIUM Published 2025-09-05 Modified 2026-10-19 Official page ↗
Status
Modified
Published
2025-09-05
Last modified
2026-10-19
Assigner
416baaa9-dc9f-4396-8d5f-8c081fb06d67
CVSS 3.1 (416baaa9-dc9f-4396-8d5f-8c081fb06d67)
7.8 HIGH — CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS 3.1 ([email protected])
4.7 MEDIUM — CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
Weaknesses
CWE-362

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().

Affected configurations

• linux linux kernel (>= 4.14 < 5.10.242) • linux linux kernel (>= 5.11 < 5.15.191) • linux linux kernel (>= 5.16 < 6.1.150) • linux linux kernel (>= 6.2 < 6.6.104) • linux linux kernel (>= 6.7 < 6.12.44) • linux linux kernel (>= 6.13 < 6.16.4) • linux linux kernel 6.17 • debian debian linux 11.0

Related

Weakness · CWE (1)

  • CWE-362 Concurrent Execution using Shared Resource with Improper Synchronization weakness

References