Bugzilla – Bug 1226176
VUL-0: CVE-2023-39176: kernel: Linux Kernel ksmbd Transform Header Out-Of-Bounds Read Information Disclosure Vulnerability
Last modified: 2024-06-14 09:39:13 UTC
This vulnerability allows remote attackers to disclose sensitive information on affected installations of Linux Kernel. Authentication is not required to exploit this vulnerability. However, only systems with ksmbd enabled are vulnerable. The specific flaw exists within the parsing of SMB2 requests that have a transform header. 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-24-586/ http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2023-39176 https://lore.kernel.org/lkml/CAH2r5mv+Sy5mrZThrQUf1na-mg-B9DiLd5fkYs9sPo97GWirCA@mail.gmail.com/ Patch: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=374a7f47bf401441edff0a64465e61326bf70a82
Up-stream commit: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=5aa4fda5aa9c2a5a7bac67b4a12b089ab81fee3c Previous patch link include the fix also for bug 1226175
All done, closing.