Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc>
---
libavformat/webm_chunk.c | 8 +++++++-
1 file changed, 7 insertions(+), 1 deletion(-)
diff --git a/libavformat/webm_chunk.c b/libavformat/webm_chunk.c
index 561ec152e7..e2fbd8be1d 100644
--- a/libavformat/webm_chunk.c
+++ b/libavformat/webm_chunk.c
@@ -88,6 +88,8 @@ static int get_chunk_filename(AVFormatContext *s, int
is_header, char filename[M
{
WebMChunkContext *wc = s->priv_data;
AVFormatContext *oc = wc->avf;
+ int len;
+
if (!filename) {
return AVERROR(EINVAL);
}
@@ -96,7 +98,11 @@ static int get_chunk_filename(AVFormatContext *s, int
is_header, char filename[M
av_log(oc, AV_LOG_ERROR, "No header filename provided\n");
return AVERROR(EINVAL);
}
- av_strlcpy(filename, wc->header_filename, MAX_FILENAME_SIZE);
+ len = av_strlcpy(filename, wc->header_filename, MAX_FILENAME_SIZE);
+ if (len >= MAX_FILENAME_SIZE) {
+ av_log(oc, AV_LOG_ERROR, "header filename too long\n");
+ return AVERROR(EINVAL);
+ }
} else {
if (av_get_frame_filename(filename, MAX_FILENAME_SIZE,
s->url, wc->chunk_index - 1) < 0) {
--
2.21.0
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