From e8a88a16f78e66c8d7645b5f71dc8390b033fa70 Mon Sep 17 00:00:00 2001 From: Michael Niedermayer Date: Sat, 15 Aug 2020 01:07:44 +0200 Subject: [PATCH] avformat/mpeg: Check avio_read() return value in get_pts() Found-by: Thierry Foucu Fixes: Use-of-uninitialized-value Reviewed-by: Thierry Foucu Signed-off-by: Michael Niedermayer --- libavformat/mpeg.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/libavformat/mpeg.c b/libavformat/mpeg.c index 265b2bd1ad..a5e17925ce 100644 --- a/libavformat/mpeg.c +++ b/libavformat/mpeg.c @@ -147,9 +147,12 @@ static int mpegps_read_header(AVFormatContext *s) static int64_t get_pts(AVIOContext *pb, int c) { uint8_t buf[5]; + int ret; buf[0] = c < 0 ? avio_r8(pb) : c; - avio_read(pb, buf + 1, 4); + ret = avio_read(pb, buf + 1, 4); + if (ret < 4) + return AV_NOPTS_VALUE; return ff_parse_pes_pts(buf); }