Description
A flaw was found within the parsing of extended attributes in the kernel ksmbd module. The issue results from the lack of proper validation of user-supplied data, which can result in a read past the end of an allocated buffer. An attacker can leverage this to disclose sensitive information on affected installations of Linux. Only systems with ksmbd enabled are vulnerable to this CVE.
Problem types
Product status
Timeline
| 2023-08-17: | Reported to Red Hat. |
| 2024-06-10: | Made public. |
Credits
Red Hat would like to thank Zero Day Initiative (ZDI) for reporting this issue.
References
access.redhat.com/security/cve/CVE-2023-4458
bugzilla.redhat.com/show_bug.cgi?id=2325516 (RHBZ#2325516)
www.zerodayinitiative.com/advisories/ZDI-24-590/
Data based on CVE®. Copyright © 1999-2025, The MITRE Corporation. All rights reserved.
