From 1b865cc703d29cb307e1fa628aa02940d54eb42a Mon Sep 17 00:00:00 2001 From: Michael Niedermayer Date: Sun, 25 Apr 2021 20:16:38 +0200 Subject: [PATCH] avformat/qcp: Avoid negative nb_rates Fixes: signed integer overflow: 2 * -1725947872 cannot be represented in type 'int' Fixes: 29102/clusterfuzz-testcase-minimized-ffmpeg_dem_QCP_fuzzer-6726807632084992 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer --- libavformat/qcp.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/libavformat/qcp.c b/libavformat/qcp.c index 206ee8bdce..7e0d9b9b8c 100644 --- a/libavformat/qcp.c +++ b/libavformat/qcp.c @@ -93,7 +93,8 @@ static int qcp_read_header(AVFormatContext *s) QCPContext *c = s->priv_data; AVStream *st = avformat_new_stream(s, NULL); uint8_t buf[16]; - int i, nb_rates; + int i; + unsigned nb_rates; if (!st) return AVERROR(ENOMEM);