CVE-2023-32257

HIGH8.1

Session race condition remote code execution vulnerability

Published Jul 24, 2023

Modified 5 months ago

Details

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.

References

WEBhttps://access.redhat.com/security/cve/CVE-2023-32257 WEBhttps://bugzilla.redhat.com/show_bug.cgi?id=2219806 WEBhttps://security.netapp.com/advisory/ntap-20230915-0011/ADVISORYhttps://www.cve.org/CVERecord?id=CVE-2023-32257 WEBhttps://www.zerodayinitiative.com/advisories/ZDI-CAN-20596/

CVSS Analysis

CVSS v3.1

8.1

Exploitability

Attack Vector

NetworkAV:N

Attack Complexity

HighAC:H

Privileges Required

NonePR:N

User Interaction

NoneUI:N

Scope

UnchangedS:U

Impact

Confidentiality

HighC:H

Integrity

HighI:H

Availability

HighA:H

8.1/CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Weakness Type (CWE)

Concurrency

CWE-362

Race Condition

Ecosystems

Timeline

PublishedJul 24, 2023

ModifiedJul 29, 2025