The function avformat_alloc_context() will return a NULL pointer on
failure. However, in function read_ffserver_streams(), its return value
is not validated and the subsequent dereference may result in a bad
memory access bug. Check its return value against NULL and avoid
potential NULL dereference.
Signed-off-by: Pan Bian <bianpan2...@163.com>
---
fftools/ffmpeg_opt.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/fftools/ffmpeg_opt.c b/fftools/ffmpeg_opt.c
index 9445a2d..7e51c5a 100644
--- a/fftools/ffmpeg_opt.c
+++ b/fftools/ffmpeg_opt.c
@@ -2000,6 +2000,8 @@ static int read_ffserver_streams(OptionsContext *o,
AVFormatContext *s, const ch
{
int i, err;
AVFormatContext *ic = avformat_alloc_context();
+ if (!ic)
+ return AVERROR(ENOMEM);
ic->interrupt_callback = int_cb;
err = avformat_open_input(&ic, filename, NULL, NULL);
--
1.9.1
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