github-mirror/linux
1
0
Fork 0
mirror of https://github.com/torvalds/linux.git synced 2026-06-07 05:55:44 +02:00
Code Issues Actions Packages Projects Releases Wiki Activity Graph

ASoC: topology: Prevent use-after-free in snd_soc_get_pcm_runtime()

Browse Source 
remove_link() is currently calling snd_soc_remove_dai_link() after
it has already freed the memory for the link name. But this is later
read from snd_soc_get_pcm_runtime() causing a KASAN use-after-free
warning. Reorder the cleanups to fix this issue.

Signed-off-by: Dragos Tarcatu <dragos_tarcatu@mentor.com>
This commit is contained in:
Dragos Tarcatu 2019-12-04 10:05:53 +02:00 committed by Pierre Bossart
parent 68ccd90e60
commit 54c96eae3e
1 changed files with 3 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
sound/soc/soc-topology.c
View File

@ -548,12 +548,12 @@ static void remove_link(struct snd_soc_component *comp,
if (dobj->ops && dobj->ops->link_unload)
dobj->ops->link_unload(comp, dobj);
list_del(&dobj->list);
snd_soc_remove_dai_link(comp->card, link);
kfree(link->name);
kfree(link->stream_name);
kfree(link->cpus->dai_name);
list_del(&dobj->list);
snd_soc_remove_dai_link(comp->card, link);
kfree(link);
}