Bug 2385885 (CVE-2023-32256) - CVE-2023-32256 kernel: ksmbd race issue from smb2 close and logoff with multichannel
Summary: CVE-2023-32256 kernel: ksmbd race issue from smb2 close and logoff with multi...
Keywords:
Status: NEW
Alias: CVE-2023-32256
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
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Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2025-08-01 01:12 UTC by OSIDB Bzimport
Modified: 2025-08-01 12:57 UTC (History)
0 users

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Description OSIDB Bzimport 2025-08-01 01:12:39 UTC 
This vulnerability allows remote attackers to disclose sensitive information on affected installations of Linux Kernel. Authentication is not required to exploit this vulnerability, but only systems with ksmbd enabled are vulnerable.

The specific flaw exists within the processing of SMB2_QUERY_INFO and SMB2_LOGOFF commands. The issue results from the lack of proper locking when performing operations on an object. An attacker can leverage this in conjunction with other vulnerabilities to execute arbitrary code in the context of the kernel.
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