Fix DoS due to lack of eof check

2025-12-11 20:52:05 +08:00
parent 7b0867a6cf
commit f6e9c0eed5
1 changed files with 5 additions and 1 deletions
--- a/contrib/sdk/sources/ffmpeg/ffmpeg-2.8/libavformat/cinedec.c
+++ b/contrib/sdk/sources/ffmpeg/ffmpeg-2.8/libavformat/cinedec.c
@@ -267,8 +267,12 @@ static int cine_read_header(AVFormatContext *avctx)

    /* parse image offsets */
    avio_seek(pb, offImageOffsets, SEEK_SET);
-    for (i = 0; i < st->duration; i++)
+    for (i = 0; i < st->duration; i++) {
+        if (avio_feof(pb))
+            return AVERROR_INVALIDDATA;
+
        av_add_index_entry(st, avio_rl64(pb), i, 0, 0, AVINDEX_KEYFRAME);
+    }

    return 0;
 }