| 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-2021-47020: soundwire: stream: fix memory leak in stream config error path |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| soundwire: stream: fix memory leak in stream config error path |
| |
| When stream config is failed, master runtime will release all |
| slave runtime in the slave_rt_list, but slave runtime is not |
| added to the list at this time. This patch frees slave runtime |
| in the config error path to fix the memory leak. |
| |
| The Linux kernel CVE team has assigned CVE-2021-47020 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 4.18 with commit 89e590535f32d4bc548bcf266f3b046e50942f6d and fixed in 4.19.191 with commit 342260fe821047c3d515e3d28085d73fbdce3e80 |
| Issue introduced in 4.18 with commit 89e590535f32d4bc548bcf266f3b046e50942f6d and fixed in 5.4.119 with commit 870533403ffa28ff63e173045fc5369365642002 |
| Issue introduced in 4.18 with commit 89e590535f32d4bc548bcf266f3b046e50942f6d and fixed in 5.10.37 with commit 7c468deae306d0cbbd539408c26cfec04c66159a |
| Issue introduced in 4.18 with commit 89e590535f32d4bc548bcf266f3b046e50942f6d and fixed in 5.11.21 with commit 2f17ac005b320c85d686088cfd4c2e7017912b88 |
| Issue introduced in 4.18 with commit 89e590535f32d4bc548bcf266f3b046e50942f6d and fixed in 5.12.4 with commit effd2bd62b416f6629e18e3ce077c60de14cfdea |
| Issue introduced in 4.18 with commit 89e590535f32d4bc548bcf266f3b046e50942f6d and fixed in 5.13 with commit 48f17f96a81763c7c8bf5500460a359b9939359f |
| |
| 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-2021-47020 |
| 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/soundwire/stream.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/342260fe821047c3d515e3d28085d73fbdce3e80 |
| https://git.kernel.org/stable/c/870533403ffa28ff63e173045fc5369365642002 |
| https://git.kernel.org/stable/c/7c468deae306d0cbbd539408c26cfec04c66159a |
| https://git.kernel.org/stable/c/2f17ac005b320c85d686088cfd4c2e7017912b88 |
| https://git.kernel.org/stable/c/effd2bd62b416f6629e18e3ce077c60de14cfdea |
| https://git.kernel.org/stable/c/48f17f96a81763c7c8bf5500460a359b9939359f |
