Signed-off-by: Cai Fan <caifan0...@163.com>
---
libavformat/img2enc.c | 7 ++++++-
1 file changed, 6 insertions(+), 1 deletion(-)
diff --git a/libavformat/img2enc.c b/libavformat/img2enc.c
index 41638d92b8..a1eb0c688d 100644
--- a/libavformat/img2enc.c
+++ b/libavformat/img2enc.c
@@ -180,7 +180,12 @@ static int write_packet(AVFormatContext *s, AVPacket *pkt)
}
for (i = 0; i < 4; i++) {
av_dict_copy(&options, img->protocol_opts, 0);
- snprintf(img->tmp[i], sizeof(img->tmp[i]), "%s.tmp", filename);
+ int len = snprintf(img->tmp[i], sizeof(img->tmp[i]), "%s.tmp",
filename);
+ if (len < 0 || len >= sizeof(img->tmp[i])) {
+ av_log(s, AV_LOG_ERROR, "Filename too long: %s\n", filename);
+ ret = AVERROR(EINVAL);
+ goto fail;
+ }
av_strlcpy(img->target[i], filename, sizeof(img->target[i]));
if (s->io_open(s, &pb[i], img->use_rename ? img->tmp[i] : filename,
AVIO_FLAG_WRITE, &options) < 0) {
av_log(s, AV_LOG_ERROR, "Could not open file : %s\n",
img->use_rename ? img->tmp[i] : filename);
--
2.34.1
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