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[FFmpeg-devel,5/6] avformat/4xm: Make audio_frame_count 64bit

Message ID 20201123004304.23464-5-michael@niedermayer.cc
State New
Headers show
Series [FFmpeg-devel,1/6] avcodec/vp9dsp_template: Fix integer overflows in itxfm_wrapper
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Commit Message

Michael Niedermayer Nov. 23, 2020, 12:43 a.m. UTC
Fixes: signed integer overflow: 2099257366 * 2 cannot be represented in type 'int'
Fixes: 27486/clusterfuzz-testcase-minimized-ffmpeg_dem_FOURXM_fuzzer-5112179134824448

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
---
 libavformat/4xm.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
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Patch

diff --git a/libavformat/4xm.c b/libavformat/4xm.c
index 6a227a0b0d..30f1b05324 100644
--- a/libavformat/4xm.c
+++ b/libavformat/4xm.c
@@ -299,7 +299,7 @@  static int fourxm_read_packet(AVFormatContext *s,
     unsigned int track_number;
     int packet_read = 0;
     unsigned char header[8];
-    int audio_frame_count;
+    int64_t audio_frame_count;
 
     while (!packet_read) {
         if ((ret = avio_read(s->pb, header, 8)) < 0)