Bugzilla – Bug 1213544
VUL-0: kernel-source,kernel-source-azure,kernel-source-rt: ksmbd Out-Of-Bounds Read Information Disclosure Vulnerability
Last modified: 2024-05-22 11:06:38 UTC
ZDI-23-980 This vulnerability allows remote attackers to disclose sensitive information on affected installations of Linux Kernel. Authentication may or may not be required to exploit this vulnerability, depending upon configuration. Furthermore, only systems with ksmbd enabled are vulnerable. The specific flaw exists within the parsing of smb2_hdr structure. 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 in conjunction with other vulnerabilities to execute arbitrary code in the context of the kernel. References: https://www.zerodayinitiative.com/advisories/ZDI-23-980/
ksmbd is only built in stable, which already has the fix
(In reply to Thomas Leroy from comment #1) > ksmbd is only built in stable, which already has the fix commit 5fe7f7b78290638806211046a99f031ff26164e1 [v6.4~32^2~1] Author: Namjae Jeon <linkinjeon@kernel.org> Date: Thu Jun 15 22:04:40 2023 +0900 ksmbd: fix out-of-bound read in smb2_write update status: stable [v6.4, already included] Reset assigner
closing