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authorKuninori Morimoto <kuninori.morimoto.gx@renesas.com>2023-03-13 00:50:28 +0000
committerTakashi Iwai <tiwai@suse.de>2023-03-14 17:04:53 +0100
commit98e5eb110095ec77cb6d775051d181edbf9cd3cf (patch)
tree11512c5b69e4e2491bd8f501bacbbb95fe59e6b1 /sound
parent9026c0bf233db53b86f74f4c620715e94eb32a09 (diff)
ALSA: hda/ca0132: fixup buffer overrun at tuning_ctl_set()
tuning_ctl_set() might have buffer overrun at (X) if it didn't break from loop by matching (A). static int tuning_ctl_set(...) { for (i = 0; i < TUNING_CTLS_COUNT; i++) (A) if (nid == ca0132_tuning_ctls[i].nid) break; snd_hda_power_up(...); (X) dspio_set_param(..., ca0132_tuning_ctls[i].mid, ...); snd_hda_power_down(...); ^ return 1; } We will get below error by cppcheck sound/pci/hda/patch_ca0132.c:4229:2: note: After for loop, i has value 12 for (i = 0; i < TUNING_CTLS_COUNT; i++) ^ sound/pci/hda/patch_ca0132.c:4234:43: note: Array index out of bounds dspio_set_param(codec, ca0132_tuning_ctls[i].mid, 0x20, ^ This patch cares non match case. Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> Link: https://lore.kernel.org/r/87sfe9eap7.wl-kuninori.morimoto.gx@renesas.com Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound')
-rw-r--r--sound/pci/hda/patch_ca0132.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/sound/pci/hda/patch_ca0132.c b/sound/pci/hda/patch_ca0132.c
index acde4cd58785..099722ebaed8 100644
--- a/sound/pci/hda/patch_ca0132.c
+++ b/sound/pci/hda/patch_ca0132.c
@@ -4228,8 +4228,10 @@ static int tuning_ctl_set(struct hda_codec *codec, hda_nid_t nid,
for (i = 0; i < TUNING_CTLS_COUNT; i++)
if (nid == ca0132_tuning_ctls[i].nid)
- break;
+ goto found;
+ return -EINVAL;
+found:
snd_hda_power_up(codec);
dspio_set_param(codec, ca0132_tuning_ctls[i].mid, 0x20,
ca0132_tuning_ctls[i].req,