| 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-2022-49161: ASoC: mediatek: Fix error handling in mt8183_da7219_max98357_dev_probe |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| ASoC: mediatek: Fix error handling in mt8183_da7219_max98357_dev_probe |
| |
| The device_node pointer is returned by of_parse_phandle() with refcount |
| incremented. We should use of_node_put() on it when done. |
| |
| This function only calls of_node_put() in the regular path. |
| And it will cause refcount leak in error paths. |
| Fix this by calling of_node_put() in error handling too. |
| |
| The Linux kernel CVE team has assigned CVE-2022-49161 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 5.2 with commit 11c0269017b212fd47c593307d2dc3eb9713b2d0 and fixed in 5.17.2 with commit 9b9f6227e8d0c7c46b6d9d7b8a5c4e0536049fcf |
| Issue introduced in 5.2 with commit 11c0269017b212fd47c593307d2dc3eb9713b2d0 and fixed in 5.18 with commit 28a265a1ee11febeec5ea73a804f30dcec3181ca |
| |
| 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-2022-49161 |
| 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: |
| sound/soc/mediatek/mt8183/mt8183-da7219-max98357.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/9b9f6227e8d0c7c46b6d9d7b8a5c4e0536049fcf |
| https://git.kernel.org/stable/c/28a265a1ee11febeec5ea73a804f30dcec3181ca |
