1 files changed, 4 insertions, 0 deletions
diff --git a/libavcodec/iff.c b/libavcodec/iff.c
index bc88a8e45b..d5c1457de1 100644
--- a/libavcodec/iff.c
+++ b/libavcodec/iff.c
@@ -371,6 +371,10 @@ static av_cold int decode_init(AVCodecContext *avctx)
 static void decodeplane8(uint8_t *dst, const uint8_t *buf, int buf_size, int plane)
 {
     const uint64_t *lut = plane8_lut[plane];
+    if (plane >= 8) {
+        av_log(0, AV_LOG_WARNING, "Ignoring extra planes beyond 8\n");
+        return;
+    }
     do {
         uint64_t v = AV_RN64A(dst) | lut[*buf++];
         AV_WN64A(dst, v);