CVE-2023-32257

Session race condition remote code execution vulnerability

Published Jul 24, 2023 CVSS 3.1 · 8.1 High EPSS 2.4% KEV · Not listed
Description
A flaw was found in the Linux kernel's ksmbd, a high-performance in-kernel SMB server. The specific flaw exists within the processing of SMB2_SESSION_SETUP and SMB2_LOGOFF commands. The issue results from the lack of proper locking when performing operations on an object. An attacker can leverage this vulnerability to execute code in the context of the kernel.

Analysis

No analysis available yet

Remediation

No remediation available yet

Tracking

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Advisories

Source ID Title
EUVD EUVD EUVD-2023-36514 A flaw was found in the Linux kernel's ksmbd, a high-performance in-kernel SMB server. The specific flaw exists within the processing of SMB2_SESSION_SETUP and SMB2_LOGOFF commands. The issue results from the lack of proper locking when performing operations on an object. An attacker can leverage this vulnerability to execute code in the context of the kernel.
Ubuntu USN Ubuntu USN USN-6338-1 Linux kernel vulnerabilities
Ubuntu USN Ubuntu USN USN-6338-2 Linux kernel vulnerabilities
Ubuntu USN Ubuntu USN USN-6344-1 Linux kernel (Azure) vulnerabilities
Ubuntu USN Ubuntu USN USN-6626-1 Linux kernel vulnerabilities
Ubuntu USN Ubuntu USN USN-6626-2 Linux kernel vulnerabilities
Ubuntu USN Ubuntu USN USN-6626-3 Linux kernel (Azure) vulnerabilities
Ubuntu USN Ubuntu USN USN-6628-1 Linux kernel (Intel IoTG) vulnerabilities
Ubuntu USN Ubuntu USN USN-6628-2 Linux kernel (Intel IoTG) vulnerabilities
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Weaknesses
  • CWE-362

    Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

  • CWE-667

    Improper Locking

Sources

Status
PUBLISHED
Assigner
redhat
Published
Updated
Jul 29, 2025, 1:38 PM
Reserved
May 5, 2023, 10:00 AM
Status
Modified
Published
Jul 24, 2023, 4:15 PM
Modified
Jun 17, 2026, 5:58 AM
Severity
Important
Public date
May 4, 2023, 12:00 AM