CVE-2023-53377

cifs: prevent use-after-free by freeing the cfile later

High · published September 18, 2025

CVSS v3.1
7.8
EPSS
0%
Percentile
4.0
In the wild
Unconfirmed
What it is

In the Linux kernel, the following vulnerability has been resolved:

cifs: prevent use-after-free by freeing the cfile later

In smb2_compound_op we have a possible use-after-free

which can cause hard to debug problems later on.

This was revealed during stress testing with KASAN enabled

kernel. Fixing it by moving the cfile free call to

a few lines below, after the usage.

The record
Technical detail
CVSS v3.1
7.8 · HIGH
Vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00152 · 4.0th percentile
Published
2025-09-18T13:33Z
EPSS history
Timeline
  • 18 SEP 13:33Z
    cifs: prevent use-after-free by freeing the cfile later
    cvelistv5