| 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-2024-35815: fs/aio: Check IOCB_AIO_RW before the struct aio_kiocb conversion |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| fs/aio: Check IOCB_AIO_RW before the struct aio_kiocb conversion |
| |
| The first kiocb_set_cancel_fn() argument may point at a struct kiocb |
| that is not embedded inside struct aio_kiocb. With the current code, |
| depending on the compiler, the req->ki_ctx read happens either before |
| the IOCB_AIO_RW test or after that test. Move the req->ki_ctx read such |
| that it is guaranteed that the IOCB_AIO_RW test happens first. |
| |
| The Linux kernel CVE team has assigned CVE-2024-35815 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 4.19.308 with commit 337b543e274fe7a8f47df3c8293cc6686ffa620f and fixed in 4.19.312 with commit 10ca82aff58434e122c7c757cf0497c335f993f3 |
| Issue introduced in 5.4.270 with commit b4eea7a05ee0ab5ab0514421e6ba8c5d249cf942 and fixed in 5.4.274 with commit 396dbbc18963648e9d1a4edbb55cfe08fa374d50 |
| Issue introduced in 5.10.211 with commit ea1cd64d59f22d6d13f367d62ec6e27b9344695f and fixed in 5.10.215 with commit 94eb0293703ced580f05dfbe5a57da5931e9aee2 |
| Issue introduced in 5.15.150 with commit d7b6fa97ec894edd02f64b83e5e72e1aa352f353 and fixed in 5.15.154 with commit a71cba07783abc76b547568b6452cd1dd9981410 |
| Issue introduced in 6.1.80 with commit 18f614369def2a11a52f569fe0f910b199d13487 and fixed in 6.1.84 with commit 18d5fc3c16cc317bd0e5f5dabe0660df415cadb7 |
| Issue introduced in 6.6.19 with commit e7e23fc5d5fe422827c9a43ecb579448f73876c7 and fixed in 6.6.24 with commit c01ed748847fe8b810d86efc229b9e6c7fafa01e |
| Issue introduced in 6.7.7 with commit 1dc7d74fe456944a9b1c57bd776280249f441ac6 and fixed in 6.7.12 with commit 5c43d0041e3a05c6c41c318b759fff16d2384596 |
| |
| 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-2024-35815 |
| 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/aio.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/10ca82aff58434e122c7c757cf0497c335f993f3 |
| https://git.kernel.org/stable/c/396dbbc18963648e9d1a4edbb55cfe08fa374d50 |
| https://git.kernel.org/stable/c/94eb0293703ced580f05dfbe5a57da5931e9aee2 |
| https://git.kernel.org/stable/c/a71cba07783abc76b547568b6452cd1dd9981410 |
| https://git.kernel.org/stable/c/18d5fc3c16cc317bd0e5f5dabe0660df415cadb7 |
| https://git.kernel.org/stable/c/c01ed748847fe8b810d86efc229b9e6c7fafa01e |
| https://git.kernel.org/stable/c/5c43d0041e3a05c6c41c318b759fff16d2384596 |
| https://git.kernel.org/stable/c/961ebd120565cb60cebe21cb634fbc456022db4a |
