CVE-2023-32254

Tree connection race condition remote code execution 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 processing of SMB2_TREE_DISCONNECT 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.

Category

9.8
CVSS
Severity: Critical
CVSS 3.1 •
EPSS 0.07%
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-2023-32254 third party advisory vdb entry
https://bugzilla.redhat.com/show_bug.cgi?id=2191658 patch third party advisory issue tracking
https://www.zerodayinitiative.com/advisories/ZDI-23-702/ patch third party advisory vdb entry
https://security.netapp.com/advisory/ntap-20230824-0004/ third party advisory

Frequently Asked Questions

What is the severity of CVE-2023-32254?
CVE-2023-32254 has been scored as a critical severity vulnerability.
How to fix CVE-2023-32254?
To fix CVE-2023-32254, 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-2023-32254 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2023-32254 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-2023-32254?
CVE-2023-32254 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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