CVE-2022-50049
ASoC: DPCM: Don't pick up BE without substream
We use these services and cookies to improve your user experience. You may opt out if you wish, however, this may limit some features on this site.
Please see our statement on Data Privacy.
ASoC: DPCM: Don't pick up BE without substream
In the Linux kernel, the following vulnerability has been resolved: ASoC: DPCM: Don't pick up BE without substream When DPCM tries to add valid BE connections at dpcm_add_paths(), it doesn't check whether the picked BE actually supports for the given stream direction. Due to that, when an asymmetric BE stream is present, it picks up wrongly and this may result in a NULL dereference at a later point where the code assumes the existence of a corresponding BE substream. This patch adds the check for the presence of the substream for the target BE for avoiding the problem above. Note that we have already some fix for non-existing BE substream at commit 6246f283d5e0 ("ASoC: dpcm: skip missing substream while applying symmetry"). But the code path we've hit recently is rather happening before the previous fix. So this patch tries to fix at picking up a BE instead of parsing BE lists.
Reserved 2025-06-18 | Published 2025-06-18 | Updated 2025-06-18 | Assigner Linuxgit.kernel.org/...c/aa803e6ecac78e93b24ebefa17c207d6392d8ad4
git.kernel.org/...c/6a840e8ef6b6c56d1b7e6a555adc31135e517875
git.kernel.org/...c/754590651ccbbcc74a7c20907be4bb15d642bde3
Support options
