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Code Issues Releases Activity

sound: Add min_rate and min_channels safety check in SNDCTL_AUDIOINFO

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If the channel list is empty, min_rate and min_channels will be INT_MAX.
Instead, assign them to 0, like we do in sndstat_get_caps().

Sponsored by:	The FreeBSD Foundation
MFC after:	2 days
Reviewed by:	dev_submerge.ch
Differential Revision:	https://reviews.freebsd.org/D45876
This commit is contained in:
Christos Margiolis 2024-07-06 20:23:15 +02:00
parent 9d8b93bc9c
commit 1a768ea9db
1 changed files with 4 additions and 0 deletions
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4
sys/dev/sound/pcm/dsp.c
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@ -2182,6 +2182,10 @@ dsp_oss_audioinfo(struct cdev *i_dev, oss_audioinfo *ai, bool ex)
CHN_UNLOCK(ch);
}
if (ai->min_rate == INT_MAX)
ai->min_rate = 0;
if (ai->min_channels == INT_MAX)
ai->min_channels = 0;
PCM_UNLOCK(d);