Tree connection null pointer dereference denial-of-service vulnerability
CVE-2023-32248

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-2023-32248?

A vulnerability in the Linux kernel's ksmbd, a high-performance in-kernel SMB server, was identified due to improper validation of pointers when handling SMB2_TREE_CONNECT and SMB2_QUERY_INFO commands. This flaw could be exploited by an attacker to cause a denial-of-service condition, impacting system availability. Users and administrators are advised to verify their systems against this vulnerability and apply necessary patches from their distribution providers.

Affected Version(s)

kernel 6.4-rc1

References

https://access.redhat.com/security/cve/CVE-2023-32248
vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2219818
issue-trackingx_refsource_REDHAT
https://www.zerodayinitiative.com/advisories/ZDI-CAN-20479/

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-2023-32248 : Tree connection null pointer dereference denial-of-service vulnerability