CVE-2023-53377

HIGH EPSS 3.6%
Published Sep 18, 20259mo ago · Modified Jun 17, 20261w ago
7.8 CVSS 3.1
High
Find Similar
Published Sep 18, 2025 9mo ago
Last Modified Jun 17, 2026 1w ago

Description

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.

CVSS Details

Base Score
7.8
Exploitability
1.8
Impact
5.9
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack Vector Local
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality High
Integrity High
Availability High

Threat Intelligence

EPSS Exploit Probability
3.6% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 1

CWE-416 Use After Free Memory Safety

Affected Products 3

VendorProductVersionRange
linuxlinux_kernel*≥6.0.16  –  <6.1.39
linuxlinux_kernel*≥6.2  –  <6.3.13
linuxlinux_kernel*≥6.4  –  <6.4.4

References 4

  • git.kernel.org https://git.kernel.org/stable/c/33f736187d08f6bc822117629f263b97d3df4165
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/4fe07d55a5461e66a55fbefb57f85ff0facea32b
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/b6353518ef8180816e863aa23b06456f395404d6
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/d017880782cf71f8820ee4a2002843893176501d
    Patch

Remediation

  • git.kernel.org https://git.kernel.org/stable/c/33f736187d08f6bc822117629f263b97d3df4165
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/4fe07d55a5461e66a55fbefb57f85ff0facea32b
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/b6353518ef8180816e863aa23b06456f395404d6
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/d017880782cf71f8820ee4a2002843893176501d
    Patch