| 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-2024-50286: ksmbd: fix slab-use-after-free in ksmbd_smb2_session_create |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| ksmbd: fix slab-use-after-free in ksmbd_smb2_session_create |
| |
| There is a race condition between ksmbd_smb2_session_create and |
| ksmbd_expire_session. This patch add missing sessions_table_lock |
| while adding/deleting session from global session table. |
| |
| The Linux kernel CVE team has assigned CVE-2024-50286 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 5.15 with commit 0626e6641f6b467447c81dd7678a69c66f7746cf and fixed in 6.1.117 with commit f56446ba5378d19e31040b548a14ee9a8f1500ea |
| Issue introduced in 5.15 with commit 0626e6641f6b467447c81dd7678a69c66f7746cf and fixed in 6.6.61 with commit e923503a56b3385b64ae492e3225e4623f560c5b |
| Issue introduced in 5.15 with commit 0626e6641f6b467447c81dd7678a69c66f7746cf and fixed in 6.11.8 with commit e7a2ad2044377853cf8c59528dac808a08a99c72 |
| Issue introduced in 5.15 with commit 0626e6641f6b467447c81dd7678a69c66f7746cf and fixed in 6.12 with commit 0a77715db22611df50b178374c51e2ba0d58866e |
| |
| 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-2024-50286 |
| 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/mgmt/user_session.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/f56446ba5378d19e31040b548a14ee9a8f1500ea |
| https://git.kernel.org/stable/c/e923503a56b3385b64ae492e3225e4623f560c5b |
| https://git.kernel.org/stable/c/e7a2ad2044377853cf8c59528dac808a08a99c72 |
| https://git.kernel.org/stable/c/0a77715db22611df50b178374c51e2ba0d58866e |
