[FFmpeg-devel] [PATCH 4/9] avformat/xwma: Check for EOF in dpds_table read code

[Michael Niedermayer]

Fixes: Timeout (>30 -> 140ms)
Fixes: 26478/clusterfuzz-testcase-minimized-ffmpeg_dem_XWMA_fuzzer-5918147066200064

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael at niedermayer.cc>
---
 libavformat/xwma.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/libavformat/xwma.c b/libavformat/xwma.c
index 5a57caa841..aedadcf140 100644
--- a/libavformat/xwma.c
+++ b/libavformat/xwma.c
@@ -211,6 +211,10 @@ static int xwma_read_header(AVFormatContext *s)
             }
 
             for (i = 0; i < dpds_table_size; ++i) {
+                if (avio_feof(pb)) {
+                    ret = AVERROR_INVALIDDATA;
+                    goto fail;
+                }
                 dpds_table[i] = avio_rl32(pb);
                 size -= 4;
             }
-- 
2.17.1