Commit 0981a260 authored by Takashi Iwai's avatar Takashi Iwai Committed by Jaroslav Kysela
Browse files

[ALSA] Fix possible invalid memory access in PCM core

snd_internval_list() may access invalid memory in the case count = 0
is given.  It shouldn't be passed, but it'd better to make the code
a bit more robust.

Signed-off-by: default avatarTakashi Iwai <>
Signed-off-by: default avatarJaroslav Kysela <>
parent bc7320c5
......@@ -781,6 +781,11 @@ int snd_interval_list(struct snd_interval *i, unsigned int count, unsigned int *
unsigned int k;
int changed = 0;
if (!count) {
i->empty = 1;
return -EINVAL;
for (k = 0; k < count; k++) {
if (mask && !(mask & (1 << k)))
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