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ALSA: hda - possible read past array alc88[02]_parse_auto_config()

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The test of index `i' is after the read - too late - and
unsafe: if snd_hda_get_connections() fails in the last
iteration a read beyond the array is possible.

Signed-off-by: Roel Kluin <roel.kluin@gmail.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Roel Kluin 2009-11-10 20:11:55 +01:00 committed by Takashi Iwai
parent 4ac5598290
commit 71121d9fcc
1 changed files with 4 additions and 4 deletions
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8
sound/pci/hda/patch_realtek.c
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@ -4684,9 +4684,9 @@ static int alc880_parse_auto_config(struct hda_codec *codec)
spec->multiout.dig_out_nid = dig_nid;
else {
spec->multiout.slave_dig_outs = spec->slave_dig_outs;
spec->slave_dig_outs[i - 1] = dig_nid;
if (i == ARRAY_SIZE(spec->slave_dig_outs) - 1)
if (i >= ARRAY_SIZE(spec->slave_dig_outs) - 1)
break;
spec->slave_dig_outs[i - 1] = dig_nid;
}
}
if (spec->autocfg.dig_in_pin)
@ -9813,9 +9813,9 @@ static int alc882_parse_auto_config(struct hda_codec *codec)
spec->multiout.dig_out_nid = dig_nid;
else {
spec->multiout.slave_dig_outs = spec->slave_dig_outs;
spec->slave_dig_outs[i - 1] = dig_nid;
if (i == ARRAY_SIZE(spec->slave_dig_outs) - 1)
if (i >= ARRAY_SIZE(spec->slave_dig_outs) - 1)
break;
spec->slave_dig_outs[i - 1] = dig_nid;
}
}
if (spec->autocfg.dig_in_pin)