CVE-2025-39697

MediumCVSS 4.7/10Last modified Oct 19, 2026

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().

Metrics

CVSS 3.1 4.7/10CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H

Weakness enumeration

CWE-362

Affected software

VendorProductVersions
LinuxLinux>= bd37d6fce184836bd5e7cd90ce40116a4fadaf2a, < 0ff42a32784e0f2cb46a46da8e9f473538c13e1b; >= bd37d6fce184836bd5e7cd90ce40116a4fadaf2a, < f230d40147cc37eb3aef4d50e2e2c06ea73d9a77; >= bd37d6fce184836bd5e7cd90ce40116a4fadaf2a, < c32e3c71aaa1c1ba05da88605e2ddd493c58794f; >= bd37d6fce184836bd5e7cd90ce40116a4fadaf2a, < 181feb41f0b268e6288bf9a7b984624d7fe2031d; >= bd37d6fce184836bd5e7cd90ce40116a4fadaf2a, < 92278ae36935a54e65fef9f8ea8efe7e80481ace; >= bd37d6fce184836bd5e7cd90ce40116a4fadaf2a, < 202a3432d21ac060629a760fff3b0a39859da3ea; >= bd37d6fce184836bd5e7cd90ce40116a4fadaf2a, < 76d2e3890fb169168c73f2e4f8375c7cc24a765e
LinuxLinux4.14
SiemensSIMATIC CN 4100< V5.0
SiemensSIMATIC S7-1500 CPU 1518-4 PN/DP MFP>= V3.1.5, < *
SiemensSIMATIC S7-1500 CPU 1518-4 PN/DP MFP>= V3.1.5, < *
SiemensSIMATIC S7-1500 CPU 1518F-4 PN/DP MFP>= V3.1.5, < *
SiemensSIMATIC S7-1500 CPU 1518F-4 PN/DP MFP>= V3.1.5, < *
SiemensSIPLUS S7-1500 CPU 1518-4 PN/DP MFP>= V3.1.5, < *

References

Timeline

Published
Sep 5, 2025
Last modified
Oct 19, 2026
NVD status
Modified

Related CVEs from 2025

CVE-2025-396985.5In the Linux kernel, the following vulnerability has been resolved: io_uring/futex: ensure io_futex_wait() cleans up properly on failure TCVE-2025-396995.5In the Linux kernel, the following vulnerability has been resolved: iommu/riscv: prevent NULL deref in iova_to_phys The riscv_iommu_pte_feCVE-2025-39705.4A vulnerability classified as problematic has been found in baseweb JSite up to 1.0. Affected is an unknown function of the file /sys/officeCVE-2025-397005.5In the Linux kernel, the following vulnerability has been resolved: mm/damon/ops-common: ignore migration request to invalid nodes damon_mCVE-2025-397017.8In the Linux kernel, the following vulnerability has been resolved: ACPI: pfr_update: Fix the driver update version check The security-verCVE-2025-397027.0In the Linux kernel, the following vulnerability has been resolved: ipv6: sr: Fix MAC comparison to be constant-time To prevent timing attCVE-2025-397035.5In the Linux kernel, the following vulnerability has been resolved: net, hsr: reject HSR frame if skb can't hold tag Receiving HSR frame wCVE-2025-397045.5In the Linux kernel, the following vulnerability has been resolved: LoongArch: KVM: Fix stack protector issue in send_ipi_data() Function CVE-2025-397055.5In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: fix a Null pointer dereference vulnerability [Why] A CVE-2025-397065.5In the Linux kernel, the following vulnerability has been resolved: drm/amdkfd: Destroy KFD debugfs after destroy KFD wq Since KFD proc coCVE-2025-397075.5In the Linux kernel, the following vulnerability has been resolved: drm/amdgpu: check if hubbub is NULL in debugfs/amdgpu_dm_capabilities CVE-2025-397085.5In the Linux kernel, the following vulnerability has been resolved: media: iris: Fix NULL pointer dereference A warning reported by smatch
CVE-2025-39697: Medium severity, CVSS 4.7 | Vulnix