CVE-2023-32247

Session setup memory exhaustion denial-of-service vulnerability

HIGH
7.5
CVSS Score
Published: July 24, 2023 at 03:19 PM UTC
Updated: June 17, 2026 at 05:58 AM UTC
5 products affected across 2 vendorsLinux KernelH700SH500S

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Severity
HIGH7.5
Exploit prediction
EPSS 4%

Description

A flaw was found in the Linux kernel's ksmbd, a high-performance in-kernel SMB server. The specific flaw exists within the handling of SMB2_SESSION_SETUP commands. The issue results from the lack of control of resource consumption. An attacker can leverage this vulnerability to create a denial-of-service condition on the system.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

5.15 ≤ v < 5.15.1455.16 ≤ v < 6.1.296.2 ≤ v < 6.2.166.3 ≤ v < 6.3.2
Affected range stops below 5.15.145, so it looks safe — our inference, not a vendor statement
Affected range stops below 6.1.29, so it looks safe — our inference, not a vendor statement
Affected range stops below 6.2.16, so it looks safe — our inference, not a vendor statement
Affected range stops below 6.3.2, so it looks safe — our inference, not a vendor statement
All versions
All versions
All versions
All versions

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

References (4)

CVSS

7.5HIGHredhat
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-401

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