sound: oss/pas2: Fix possible access out of array

Added a fix for hardware dependence bug where a sound card failure should not result in reading beyond array memory index. Signed-off-by: Asim Kadav <kadav@cs.wisc.edu> Signed-off-by: Takashi Iwai <tiwai@suse.de>
mariux64 · Jan 4, 2013 · dc30a43 · dc30a43
1 parent b7b435e
commit dc30a43
Showing 1 changed file with 5 additions and 0 deletions.
diff --git a/sound/oss/pas2_card.c b/sound/oss/pas2_card.c
@@ -333,6 +333,11 @@ static void __init attach_pas_card(struct address_info *hw_config)
 		{
 			char            temp[100];
 
+			if (pas_model < 0 ||
+			    pas_model >= ARRAY_SIZE(pas_model_names)) {
+				printk(KERN_ERR "pas2 unrecognized model.\n");
+				return;
+			}
 			sprintf(temp,
 			    "%s rev %d", pas_model_names[(int) pas_model],
 				    pas_read(0x2789));