CVE-2025-39825 : faille moyenne linux linux kernel (CVSS 4.7)

In the Linux kernel, the following vulnerability has been resolved: smb: client: fix race with concurrent opens in rename(2) Besides sending the rename request to the server, the rename process also involves closing any deferred close, waiting for outstanding I/O to complete as well as marking all existing open handles as deleted to prevent them from deferring closes, which increases the race window for potential concurrent opens on the target file. Fix this by unhashing the dentry in advance to prevent any concurrent opens on the target.

Sévérité

Moyenne (CVSS 4.7)

Vecteur CVSS

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

Exploitation active

Non signalée par la CISA

Publication

16 sept. 2025

Dernière mise à jour

30 juil. 2026

• linux linux kernel
• debian debian linux

• Fiche CVE-2025-39825 sur le NVD (NIST)
• git.kernel.org/stable/c/24b9ed739c8c5b464d983e12cf308982f3ae9…
• git.kernel.org/stable/c/289f945acb20b9b54fe4d13895e44aa58965d…
• git.kernel.org/stable/c/c9991af5e09924f6f3b3e6996a5e09f9504b4…
• git.kernel.org/stable/c/c9e7de284da0be5b44dbe79d71573f9f7f9b1…
• git.kernel.org/stable/c/d84291fc7453df7881a970716f8256273aca5…
• lists.debian.org/debian-lts-announce/2025/10/msg00008.html
• cert-portal.siemens.com/productcert/html/ssa-032379.html