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alsactl: Fix potential NULL dereferences in daemon mode

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The code releasing the each card object may access to NULL when a
bogus count is given.  Add a NULL check just to make sure.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Takashi Iwai 2016-12-09 17:28:47 +01:00
parent 9ea2a1d067
commit 9839813e7c
1 changed files with 5 additions and 3 deletions
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2
alsactl/daemon.c
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@ -451,8 +451,10 @@ save:
out: out:
free(pfd); free(pfd);
remove(pidfile); remove(pidfile);
if (cards) {
for (i = 0; i < count; i++) for (i = 0; i < count; i++)
card_free(&cards[i]); card_free(&cards[i]);
free(cards); free(cards);
}
return 0; return 0;
} }