Session null pointer dereference denial-of-service vulnerability
CVE-2023-32252

7.5HIGH

Key Information:

Vendor

Red Hat
Status
kernel
Red Hat Enterprise Linux 6
Red Hat Enterprise Linux 7
Red Hat Enterprise Linux 8
Vendor
CVE Published:
24 July 2023

What is CVE-2023-32252?

A vulnerability has been identified in the Linux kernel's ksmbd, specifically regarding the processing of SMB2_LOGOFF commands. The flaw arises from insufficient validation of pointers before they are accessed. This could enable an attacker to manipulate the SMB server, potentially leading to a denial-of-service condition and disrupting normal system functions.

Affected Version(s)

kernel 6.4-rc1

References

https://access.redhat.com/security/cve/CVE-2023-32252
vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2219815
issue-trackingx_refsource_REDHAT
https://www.zerodayinitiative.com/advisories/ZDI-CAN-20590/

CVSS V3.1

Score:
7.5
Severity:
HIGH
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

JSON
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CVE-2023-32252 : Session null pointer dereference denial-of-service vulnerability