CVE-2025-39825 | BDVDB-2026-294176 Detail
LinuxLinux
Description#
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.
Impact#
Per CVSS v3.1: confidentiality impact high, integrity impact high, availability impact high. Attack vector: local.
Weaknesses#
No weakness recorded in the source data.
References#
- https://git.kernel.org/stable/c/c9e7de284da0be5b44dbe79d71573f9f7f9b144c
- https://git.kernel.org/stable/c/24b9ed739c8c5b464d983e12cf308982f3ae93c2
- https://git.kernel.org/stable/c/c9991af5e09924f6f3b3e6996a5e09f9504b4358
- https://git.kernel.org/stable/c/289f945acb20b9b54fe4d13895e44aa58965ddb2
- https://git.kernel.org/stable/c/d84291fc7453df7881a970716f8256273aca5747
- https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html
- https://cert-portal.siemens.com/productcert/html/ssa-032379.html
Exploit#
No public exploit known
History#
- Version 1Record published in the CVE List.
- Version 2Most recent update recorded in the CVE List.