| 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-2022-49746: dmaengine: imx-sdma: Fix a possible memory leak in sdma_transfer_init |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| dmaengine: imx-sdma: Fix a possible memory leak in sdma_transfer_init |
| |
| If the function sdma_load_context() fails, the sdma_desc will be |
| freed, but the allocated desc->bd is forgot to be freed. |
| |
| We already met the sdma_load_context() failure case and the log as |
| below: |
| [ 450.699064] imx-sdma 30bd0000.dma-controller: Timeout waiting for CH0 ready |
| ... |
| |
| In this case, the desc->bd will not be freed without this change. |
| |
| The Linux kernel CVE team has assigned CVE-2022-49746 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Fixed in 4.19.272 with commit 80ee99e52936b2c04cc37b17a14b2ae2f9d282ac |
| Fixed in 5.4.231 with commit dbe634ce824329d8f14079c3e9f8f11670894bec |
| Fixed in 5.10.167 with commit bd0050b7ffa87c7b260d563646af612f4112a778 |
| Fixed in 5.15.92 with commit 43acd767bd90c5d4172ce7fee5d9007a9a08dea9 |
| Fixed in 6.1.10 with commit ce4745a6b8016fae74c95dcd457d4ceef7d98af1 |
| Fixed in 6.2 with commit 1417f59ac0b02130ee56c0c50794b9b257be3d17 |
| |
| 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-2022-49746 |
| 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: |
| drivers/dma/imx-sdma.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/80ee99e52936b2c04cc37b17a14b2ae2f9d282ac |
| https://git.kernel.org/stable/c/dbe634ce824329d8f14079c3e9f8f11670894bec |
| https://git.kernel.org/stable/c/bd0050b7ffa87c7b260d563646af612f4112a778 |
| https://git.kernel.org/stable/c/43acd767bd90c5d4172ce7fee5d9007a9a08dea9 |
| https://git.kernel.org/stable/c/ce4745a6b8016fae74c95dcd457d4ceef7d98af1 |
| https://git.kernel.org/stable/c/1417f59ac0b02130ee56c0c50794b9b257be3d17 |
