CVE-2025-39825 — Race Condition in Linux
Severity
4.7MEDIUMNVD
EPSS
0.0%
top 97.87%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
Timeline
PublishedSep 16
Latest updateApr 9
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…
CVSS vector
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:HExploitability: 1.0 | Impact: 3.6
Affected Packages3 packages
▶CVEListV5linux/linux78c09634f7dc061a3bd09704cdbebb3762a45cdf — c9e7de284da0be5b44dbe79d71573f9f7f9b144c+5
Also affects: Debian Linux 11.0
Patches
🔴Vulnerability Details
3GHSA▶
GHSA-3f3q-q5cj-phc5: In the Linux kernel, the following vulnerability has been resolved:
smb: client: fix race with concurrent opens in rename(2)
Besides sending the ren↗2025-09-16
OSV▶
CVE-2025-39825: In the Linux kernel, the following vulnerability has been resolved: smb: client: fix race with concurrent opens in rename(2) Besides sending the renam↗2025-09-16