CVE-2023-32248

Tree connection null pointer dereference denial-of-service vulnerability

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_TREE_CONNECT and SMB2_QUERY_INFO commands. The issue results from the lack of proper validation of a pointer prior to accessing it. An attacker can leverage this vulnerability to create a denial-of-service condition on the system.

Category

7.5
CVSS
Severity: High
CVSS 3.1 •
EPSS 0.11%
Third-Party Advisory redhat.com Third-Party Advisory redhat.com Third-Party Advisory netapp.com Third-Party Advisory zerodayinitiative.com
Affected: n/a kernel
Affected: Red Hat Red Hat Enterprise Linux 6
Affected: Red Hat Red Hat Enterprise Linux 7
Affected: Red Hat Red Hat Enterprise Linux 7
Affected: Red Hat Red Hat Enterprise Linux 8
Affected: Red Hat Red Hat Enterprise Linux 8
Affected: Red Hat Red Hat Enterprise Linux 9
Affected: Red Hat Red Hat Enterprise Linux 9
Affected: Fedora Fedora
Published at:
Updated at:

References

Link Tags
https://access.redhat.com/security/cve/CVE-2023-32248 third party advisory vdb entry
https://bugzilla.redhat.com/show_bug.cgi?id=2219818 patch third party advisory issue tracking
https://security.netapp.com/advisory/ntap-20230915-0006/ third party advisory
https://www.zerodayinitiative.com/advisories/ZDI-CAN-20479/ patch third party advisory vdb entry

Frequently Asked Questions

What is the severity of CVE-2023-32248?
CVE-2023-32248 has been scored as a high severity vulnerability.
How to fix CVE-2023-32248?
To fix CVE-2023-32248, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2023-32248 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2023-32248 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2023-32248?
CVE-2023-32248 affects n/a kernel, Red Hat Red Hat Enterprise Linux 6, Red Hat Red Hat Enterprise Linux 7, Red Hat Red Hat Enterprise Linux 7, Red Hat Red Hat Enterprise Linux 8, Red Hat Red Hat Enterprise Linux 8, Red Hat Red Hat Enterprise Linux 9, Red Hat Red Hat Enterprise Linux 9, Fedora Fedora.
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