| 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-2023-52440: ksmbd: fix slub overflow in ksmbd_decode_ntlmssp_auth_blob() |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| ksmbd: fix slub overflow in ksmbd_decode_ntlmssp_auth_blob() |
| |
| If authblob->SessionKey.Length is bigger than session key |
| size(CIFS_KEY_SIZE), slub overflow can happen in key exchange codes. |
| cifs_arc4_crypt copy to session key array from SessionKey from client. |
| |
| The Linux kernel CVE team has assigned CVE-2023-52440 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 5.15 with commit 0626e6641f6b467447c81dd7678a69c66f7746cf and fixed in 5.15.145 with commit bd554ed4fdc3d38404a1c43d428432577573e809 |
| Issue introduced in 5.15 with commit 0626e6641f6b467447c81dd7678a69c66f7746cf and fixed in 6.1.52 with commit 30fd6521b2fbd9b767e438e31945e5ea3e3a2fba |
| Issue introduced in 5.15 with commit 0626e6641f6b467447c81dd7678a69c66f7746cf and fixed in 6.4.15 with commit 7f1d6cb0eb6af3a8088dc24b7ddee9a9711538c4 |
| Issue introduced in 5.15 with commit 0626e6641f6b467447c81dd7678a69c66f7746cf and fixed in 6.5.2 with commit ecd7e1c562cb08e41957fcd4b0e404de5ab38e20 |
| Issue introduced in 5.15 with commit 0626e6641f6b467447c81dd7678a69c66f7746cf and fixed in 6.6 with commit 4b081ce0d830b684fdf967abc3696d1261387254 |
| |
| 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-2023-52440 |
| 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/auth.c |
| |
| |
| 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/bd554ed4fdc3d38404a1c43d428432577573e809 |
| https://git.kernel.org/stable/c/30fd6521b2fbd9b767e438e31945e5ea3e3a2fba |
| https://git.kernel.org/stable/c/7f1d6cb0eb6af3a8088dc24b7ddee9a9711538c4 |
| https://git.kernel.org/stable/c/ecd7e1c562cb08e41957fcd4b0e404de5ab38e20 |
| https://git.kernel.org/stable/c/4b081ce0d830b684fdf967abc3696d1261387254 |
