| 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-2022-49020: net/9p: Fix a potential socket leak in p9_socket_open |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| net/9p: Fix a potential socket leak in p9_socket_open |
| |
| Both p9_fd_create_tcp() and p9_fd_create_unix() will call |
| p9_socket_open(). If the creation of p9_trans_fd fails, |
| p9_fd_create_tcp() and p9_fd_create_unix() will return an |
| error directly instead of releasing the cscoket, which will |
| result in a socket leak. |
| |
| This patch adds sock_release() to fix the leak issue. |
| |
| The Linux kernel CVE team has assigned CVE-2022-49020 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 2.6.33 with commit 6b18662e239a032f908b7f6e164bdf7e2e0a32c9 and fixed in 4.9.335 with commit 0396227f4daf4792a6a8aaa3b7771dc25c4cd443 |
| Issue introduced in 2.6.33 with commit 6b18662e239a032f908b7f6e164bdf7e2e0a32c9 and fixed in 4.14.301 with commit ded893965b895b2dccd3d1436d8d3daffa23ea64 |
| Issue introduced in 2.6.33 with commit 6b18662e239a032f908b7f6e164bdf7e2e0a32c9 and fixed in 4.19.268 with commit 8b14bd0b500aec1458b51cb621c8e5fab3304260 |
| Issue introduced in 2.6.33 with commit 6b18662e239a032f908b7f6e164bdf7e2e0a32c9 and fixed in 5.4.226 with commit 2d24d91b9f44620824fc37b766f7cae00ca32748 |
| Issue introduced in 2.6.33 with commit 6b18662e239a032f908b7f6e164bdf7e2e0a32c9 and fixed in 5.10.158 with commit e01c1542379fb395e7da53706df598f38905dfbf |
| Issue introduced in 2.6.33 with commit 6b18662e239a032f908b7f6e164bdf7e2e0a32c9 and fixed in 5.15.82 with commit 8782b32ef867de7981bbe9e86ecb90e92e8780bd |
| Issue introduced in 2.6.33 with commit 6b18662e239a032f908b7f6e164bdf7e2e0a32c9 and fixed in 6.0.12 with commit aa08323fe18cb7cf95317ffa2d54ca1de8e74ebd |
| Issue introduced in 2.6.33 with commit 6b18662e239a032f908b7f6e164bdf7e2e0a32c9 and fixed in 6.1 with commit dcc14cfd7debe11b825cb077e75d91d2575b4cb8 |
| |
| 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-2022-49020 |
| 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: |
| net/9p/trans_fd.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/0396227f4daf4792a6a8aaa3b7771dc25c4cd443 |
| https://git.kernel.org/stable/c/ded893965b895b2dccd3d1436d8d3daffa23ea64 |
| https://git.kernel.org/stable/c/8b14bd0b500aec1458b51cb621c8e5fab3304260 |
| https://git.kernel.org/stable/c/2d24d91b9f44620824fc37b766f7cae00ca32748 |
| https://git.kernel.org/stable/c/e01c1542379fb395e7da53706df598f38905dfbf |
| https://git.kernel.org/stable/c/8782b32ef867de7981bbe9e86ecb90e92e8780bd |
| https://git.kernel.org/stable/c/aa08323fe18cb7cf95317ffa2d54ca1de8e74ebd |
| https://git.kernel.org/stable/c/dcc14cfd7debe11b825cb077e75d91d2575b4cb8 |
