Bugzilla – Bug 1213813
VUL-0: CVE-2023-3865: kernel-source-azure,kernel-source-rt,kernel-source: ksmbd: Out-Of-Bounds Read Information Disclosure Vulnerability
Last modified: 2024-05-22 20:25:26 UTC
CVE-2023-3865 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. Upstream fix: 5fe7f7b78290 (ksmbd: fix out-of-bound read in smb2_write) References: http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2023-3865 https://www.zerodayinitiative.com/advisories/ZDI-23-980/
Only built on stable which already has the fix, so we should be good
(In reply to Thomas Leroy from comment #1) > Only built on stable which already has the fix, so we should be good Yes, looks that no SLE be affected. The issue patch is since v6.4: 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 I still add samba expert, Paulo Alcantara to Cc. But we can close this issue. Reset assigner.
(In reply to Joey Lee from comment #2) > (In reply to Thomas Leroy from comment #1) > > Only built on stable which already has the fix, so we should be good > > Yes, looks that no SLE be affected. The issue patch is since v6.4: > > 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 > > > I still add samba expert, Paulo Alcantara to Cc. But we can close this > issue. > > Reset assigner. The above 5fe7f7b78 patch puts changes on fs/smb/server/smb2misc.c, but 15-SP5 doesn't have the C file. It is introduced by e2f34481b24db since v5.15-rc1. So 15-SP5 should not be affected.
closing