X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=libavcodec%2Fjpeglsdec.c;h=c8550e47eac97d43af8470ea6f23a98a0434cf88;hb=dc47bf3872fde18f6aea33f015a95b70e24dff19;hp=68151cbbd8ea987793457542968a82dd4dea357a;hpb=4fe013fc701acb9a4f0f567604e9f0a0460e9b77;p=ffmpeg

diff --git a/libavcodec/jpeglsdec.c b/libavcodec/jpeglsdec.c
index 68151cbbd8e..c8550e47eac 100644
--- a/libavcodec/jpeglsdec.c
+++ b/libavcodec/jpeglsdec.c
@@ -375,6 +375,11 @@ int ff_jpegls_decode_picture(MJpegDecodeContext *s, int near,
     else
         shift = point_transform + (16 - s->bits);
 
+    if (shift >= 16) {
+        ret = AVERROR_INVALIDDATA;
+        goto end;
+    }
+
     if (s->avctx->debug & FF_DEBUG_PICT_INFO) {
         av_log(s->avctx, AV_LOG_DEBUG,
                "JPEG-LS params: %ix%i NEAR=%i MV=%i T(%i,%i,%i) "