| 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-2022-49144: io_uring: fix memory leak of uid in files registration |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| io_uring: fix memory leak of uid in files registration |
| |
| When there are no files for __io_sqe_files_scm() to process in the |
| range, it'll free everything and return. However, it forgets to put uid. |
| |
| The Linux kernel CVE team has assigned CVE-2022-49144 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 5.5 with commit 08a451739a9b5783f67de51e84cb6d9559bb9dc4 and fixed in 5.10.110 with commit b27de7011cb3ba14b047be2cee0ed8278368665b |
| Issue introduced in 5.5 with commit 08a451739a9b5783f67de51e84cb6d9559bb9dc4 and fixed in 5.15.33 with commit 0853bd6885c2f293d88aaa7f7f1702c959b31680 |
| Issue introduced in 5.5 with commit 08a451739a9b5783f67de51e84cb6d9559bb9dc4 and fixed in 5.16.19 with commit d6d7a517e81accf6ed22d55684baea763d2dbe43 |
| Issue introduced in 5.5 with commit 08a451739a9b5783f67de51e84cb6d9559bb9dc4 and fixed in 5.17.2 with commit 7fa8b228c3f30060b9f4b24bb9aaaf41b0ae83fe |
| Issue introduced in 5.5 with commit 08a451739a9b5783f67de51e84cb6d9559bb9dc4 and fixed in 5.18 with commit c86d18f4aa93e0e66cda0e55827cd03eea6bc5f8 |
| |
| 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-2022-49144 |
| 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/io_uring.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/b27de7011cb3ba14b047be2cee0ed8278368665b |
| https://git.kernel.org/stable/c/0853bd6885c2f293d88aaa7f7f1702c959b31680 |
| https://git.kernel.org/stable/c/d6d7a517e81accf6ed22d55684baea763d2dbe43 |
| https://git.kernel.org/stable/c/7fa8b228c3f30060b9f4b24bb9aaaf41b0ae83fe |
| https://git.kernel.org/stable/c/c86d18f4aa93e0e66cda0e55827cd03eea6bc5f8 |
