From 4896fa18add7636ea9986edde51493331f1fb01e Mon Sep 17 00:00:00 2001 From: Michael Niedermayer Date: Thu, 23 May 2019 23:17:35 +0200 Subject: [PATCH] avcodec/h264_parse: Use 64bit for expectedpoc and expected_delta_per_poc_cycle Fixes: signed integer overflow: -2142516591 + -267814575 cannot be represented in type 'int' Fixes: 14450/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_H264_fuzzer-5716105319940096 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Reviewed-by: James Almer Signed-off-by: Michael Niedermayer --- libavcodec/h264_parse.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/libavcodec/h264_parse.c b/libavcodec/h264_parse.c index a075443d17..ac31f54e07 100644 --- a/libavcodec/h264_parse.c +++ b/libavcodec/h264_parse.c @@ -301,7 +301,8 @@ int ff_h264_init_poc(int pic_field_poc[2], int *pic_poc, if (picture_structure == PICT_FRAME) field_poc[1] += pc->delta_poc_bottom; } else if (sps->poc_type == 1) { - int abs_frame_num, expected_delta_per_poc_cycle, expectedpoc; + int abs_frame_num; + int64_t expected_delta_per_poc_cycle, expectedpoc; int i; if (sps->poc_cycle_length != 0)