CVE-2025-39734: debian linux — Fix

Description

In the Linux kernel, the following vulnerability has been resolved: Revert "fs/ntfs3: Replace inode_trylock with inode_lock" This reverts commit 69505fe98f198ee813898cbcaf6770949636430b. Initially, conditional lock acquisition was removed to fix an xfstest bug that was observed during internal testing. The deadlock reported by syzbot is resolved by reintroducing conditional acquisition. The xfstest bug no longer occurs on kernel version 6.16-rc1 during internal testing. I assume that changes in other modules may have contributed to this.

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CVSS v3.1 Score

5.5

MEDIUM

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

Affected Products

Vendor	Product	Versions
linux	linux_kernel	5.15.165 — 5.15.190
linux	linux_kernel	6.1.103 — 6.1.148
linux	linux_kernel	6.6.44 — 6.6.102
linux	linux_kernel	6.10.3 — 6.12.42
linux	linux_kernel	6.13 — 6.15.10
linux	linux_kernel	6.16 — 6.16.1
debian	debian_linux	All

References

Advisories & Patches

https://git.kernel.org/stable/c/1903a6c1f2818154f6bc87bceaaecafa92b6ac5c https://git.kernel.org/stable/c/7ce6f83ca9d52c9245b7a017466fc4baa1241b0b https://git.kernel.org/stable/c/a49f0abd8959048af18c6c690b065eb0d65b2d21 https://git.kernel.org/stable/c/a936be9b5f51c4d23f66fb673e9068c6b08104a4 https://git.kernel.org/stable/c/b356ee013a79e7e3147bfe065de376706c5d2ee9 https://git.kernel.org/stable/c/bd20733746263acaaf2a21881665db27ee4303d5 https://git.kernel.org/stable/c/bec8109f957a6e193e52d1728799994c8005ca83

Other References

https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html

Frequently Asked Questions

What is CVE-2025-39734? +

In the Linux kernel, the following vulnerability has been resolved: Revert "fs/ntfs3: Replace inode_trylock with inode_lock" This reverts commit 69505fe98f198ee813898cbcaf6770949636430b. Initially, conditional lock acquisition was removed to fix an xfstest bug that was observed during internal testing. The deadlock reported by syzbot is resolved by reintroducing conditional acquisition. The xfstest bug no longer occurs on kernel version 6.16-rc1 during internal testing. I assume that changes in other modules may have contributed to this. It has a CVSS v3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2025-39734? +

CVE-2025-39734 has a CVSS v3.1 score of 5.5 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.

What products are affected by CVE-2025-39734? +

CVE-2025-39734 affects products from debian, linux, specifically: debian_linux, linux_kernel. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2025-39734? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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