Fix DoS due to lack of eof check

2025-12-19 09:47:21 +08:00
parent 7b0867a6cf
commit f1b4023d99
1 changed files with 2 additions and 0 deletions
--- a/contrib/sdk/sources/ffmpeg/ffmpeg-2.1/libavformat/mvdec.c
+++ b/contrib/sdk/sources/ffmpeg/ffmpeg-2.1/libavformat/mvdec.c
@@ -306,6 +306,8 @@ static int mv_read_header(AVFormatContext *avctx)
            uint32_t pos   = avio_rb32(pb);
            uint32_t asize = avio_rb32(pb);
            uint32_t vsize = avio_rb32(pb);
+            if (avio_feof(pb))
+                return AVERROR_INVALIDDATA;
            avio_skip(pb, 8);
            av_add_index_entry(ast, pos,         timestamp, asize, 0, AVINDEX_KEYFRAME);
            av_add_index_entry(vst, pos + asize, i,         vsize, 0, AVINDEX_KEYFRAME);