Advisory Details

March 1st, 2024

Linux Kernel ksmbd Chained Request Improper Input Validation Information Disclosure Vulnerability

CVE ID	CVE-2023-52442
CVSS SCORE	9.3, AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:L
AFFECTED VENDORS	Linux
AFFECTED PRODUCTS	Kernel
VULNERABILITY DETAILS	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 handling of chained requests. The issue results from the lack of proper validation of user-supplied requests prior to processing them. An attacker can leverage this in conjunction with other vulnerabilities to execute arbitrary code in the context of the kernel.
ADDITIONAL DETAILS	Linux has issued an update to correct this vulnerability. More details can be found at: https://github.com/torvalds/linux/commit/3df0411e132ee74a87aa13142dfd2b190275332e
DISCLOSURE TIMELINE	2023-07-18 - Vulnerability reported to vendor 2024-03-01 - Coordinated public release of advisory 2024-07-01 - Advisory Updated
CREDIT	HexRabbit (@h3xr4bb1t)

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