[FFmpeg-devel] [PATCH] avformat/hlsenc: fix Explicit null dereferenced in hlsenc
Steven Liu
lq at chinaffmpeg.org
Thu Jan 5 02:28:56 EET 2017
CID: 1398228
Passing null pointer dirname to strlen, which dereferences it.
Signed-off-by: Steven Liu <lq at chinaffmpeg.org>
---
libavformat/hlsenc.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/libavformat/hlsenc.c b/libavformat/hlsenc.c
index 808a797..3c6490a 100644
--- a/libavformat/hlsenc.c
+++ b/libavformat/hlsenc.c
@@ -285,8 +285,8 @@ static int hls_delete_old_segments(HLSContext *hls) {
path, strerror(errno));
}
- if (segment->sub_filename[0] != '\0') {
- sub_path_size = strlen(dirname) + strlen(segment->sub_filename) + 1;
+ if ((segment->sub_filename[0] != '\0')) {
+ sub_path_size = (!dirname) ? (strlen(segment->sub_filename) + 1) : (strlen(dirname) + strlen(segment->sub_filename) + 1);
sub_path = av_malloc(sub_path_size);
if (!sub_path) {
ret = AVERROR(ENOMEM);
--
2.10.1.382.ga23ca1b.dirty
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