diff --git a/[refs] b/[refs]
index 271acf9525d8..adcdf87d128c 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: fb65c2dfe60d38be6b9193d0b85e66e780cd4373
+refs/heads/master: 4fa0e81b83503900be277e6273a79651b375e288
diff --git a/trunk/sound/usb/format.c b/trunk/sound/usb/format.c
index 89421d176570..e09aba19375c 100644
--- a/trunk/sound/usb/format.c
+++ b/trunk/sound/usb/format.c
@@ -209,6 +209,8 @@ static int parse_audio_format_rates_v1(struct snd_usb_audio *chip, struct audiof
 	return 0;
 }
 
+#define MAX_UAC2_NR_RATES 1024
+
 /*
  * Helper function to walk the array of sample rate triplets reported by
  * the device. The problem is that we need to parse whole array first to
@@ -226,7 +228,7 @@ static int parse_uac2_sample_rate_range(struct audioformat *fp, int nr_triplets,
 		int min = combine_quad(&data[2 + 12 * i]);
 		int max = combine_quad(&data[6 + 12 * i]);
 		int res = combine_quad(&data[10 + 12 * i]);
-		int rate;
+		unsigned int rate;
 
 		if ((max < 0) || (min < 0) || (res < 0) || (max < min))
 			continue;
@@ -253,6 +255,10 @@ static int parse_uac2_sample_rate_range(struct audioformat *fp, int nr_triplets,
 			fp->rates |= snd_pcm_rate_to_rate_bit(rate);
 
 			nr_rates++;
+			if (nr_rates >= MAX_UAC2_NR_RATES) {
+				snd_printk(KERN_ERR "invalid uac2 rates\n");
+				break;
+			}
 
 			/* avoid endless loop */
 			if (res == 0)