提交 78735cff 编写于 作者: R Roel Kluin 提交者: Takashi Iwai

ALSA: hda: fix out-of-bound hdmi_eld.sad[] write

e->sad[] is declared with size ELD_MAX_SAD=16, but the guard
allows range 0-31.
Signed-off-by: NRoel Kluin <roel.kluin@gmail.com>
Signed-off-by: NWu Fengguang <fengguang.wu@intel.com>
Signed-off-by: NTakashi Iwai <tiwai@suse.de>
上级 626f5cef
......@@ -508,7 +508,7 @@ static void hdmi_write_eld_info(struct snd_info_entry *entry,
char name[64];
char *sname;
long long val;
int n;
unsigned int n;
while (!snd_info_get_line(buffer, line, sizeof(line))) {
if (sscanf(line, "%s %llx", name, &val) != 2)
......@@ -539,7 +539,7 @@ static void hdmi_write_eld_info(struct snd_info_entry *entry,
sname++;
n = 10 * n + name[4] - '0';
}
if (n < 0 || n > 31) /* double the CEA limit */
if (n >= ELD_MAX_SAD)
continue;
if (!strcmp(sname, "_coding_type"))
e->sad[n].format = val;
......
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