| From bippy-5f407fcff5a0 Mon Sep 17 00:00:00 2001 |
| From: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
| To: <linux-cve-announce@vger.kernel.org> |
| Reply-to: <cve@kernel.org>, <linux-kernel@vger.kernel.org> |
| Subject: CVE-2023-52441: ksmbd: fix out of bounds in init_smb2_rsp_hdr() |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| ksmbd: fix out of bounds in init_smb2_rsp_hdr() |
| |
| If client send smb2 negotiate request and then send smb1 negotiate |
| request, init_smb2_rsp_hdr is called for smb1 negotiate request since |
| need_neg is set to false. This patch ignore smb1 packets after ->need_neg |
| is set to false. |
| |
| The Linux kernel CVE team has assigned CVE-2023-52441 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 5.15 with commit 0626e6641f6b467447c81dd7678a69c66f7746cf and fixed in 5.15.145 with commit 5c0df9d30c289d6b9d7d44e2a450de2f8e3cf40b |
| Issue introduced in 5.15 with commit 0626e6641f6b467447c81dd7678a69c66f7746cf and fixed in 6.1.53 with commit 330d900620dfc9893011d725b3620cd2ee0bc2bc |
| Issue introduced in 5.15 with commit 0626e6641f6b467447c81dd7678a69c66f7746cf and fixed in 6.4.16 with commit aa669ef229ae8dd779da9caa24e254964545895f |
| Issue introduced in 5.15 with commit 0626e6641f6b467447c81dd7678a69c66f7746cf and fixed in 6.5 with commit 536bb492d39bb6c080c92f31e8a55fe9934f452b |
| |
| Please see https://www.kernel.org for a full list of currently supported |
| kernel versions by the kernel community. |
| |
| Unaffected versions might change over time as fixes are backported to |
| older supported kernel versions. The official CVE entry at |
| https://cve.org/CVERecord/?id=CVE-2023-52441 |
| will be updated if fixes are backported, please check that for the most |
| up to date information about this issue. |
| |
| |
| Affected files |
| ============== |
| |
| The file(s) affected by this issue are: |
| fs/smb/server/server.c |
| fs/smb/server/smb_common.c |
| fs/smb/server/smb_common.h |
| |
| |
| Mitigation |
| ========== |
| |
| The Linux kernel CVE team recommends that you update to the latest |
| stable kernel version for this, and many other bugfixes. Individual |
| changes are never tested alone, but rather are part of a larger kernel |
| release. Cherry-picking individual commits is not recommended or |
| supported by the Linux kernel community at all. If however, updating to |
| the latest release is impossible, the individual changes to resolve this |
| issue can be found at these commits: |
| https://git.kernel.org/stable/c/5c0df9d30c289d6b9d7d44e2a450de2f8e3cf40b |
| https://git.kernel.org/stable/c/330d900620dfc9893011d725b3620cd2ee0bc2bc |
| https://git.kernel.org/stable/c/aa669ef229ae8dd779da9caa24e254964545895f |
| https://git.kernel.org/stable/c/536bb492d39bb6c080c92f31e8a55fe9934f452b |
