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avformat/mpeg: Check avio_read() return value in get_pts()

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Found-by: Thierry Foucu <tfoucu@gmail.com>
Fixes: Use-of-uninitialized-value
Reviewed-by: Thierry Foucu <tfoucu@gmail.com>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer 2020-08-15 01:07:44 +02:00
parent d08c3f56ec
commit e8a88a16f7
1 changed files with 4 additions and 1 deletions
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5
libavformat/mpeg.c
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@ -147,9 +147,12 @@ static int mpegps_read_header(AVFormatContext *s)
static int64_t get_pts(AVIOContext *pb, int c) static int64_t get_pts(AVIOContext *pb, int c)
{ {
uint8_t buf[5]; uint8_t buf[5];
int ret;
buf[0] = c < 0 ? avio_r8(pb) : c; 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); return ff_parse_pes_pts(buf);
} }