Don't attempt to increase the cursor pointer if it was \0.
Fixes invalid reads.
Signed-off-by: James Almer <jamr...@gmail.com>
---
libavformat/concat.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/libavformat/concat.c b/libavformat/concat.c
index aec1f52d8e..2560811ff9 100644
--- a/libavformat/concat.c
+++ b/libavformat/concat.c
@@ -251,7 +251,8 @@ static av_cold int concatf_open(URLContext *h, const char
*uri, int flags)
err = AVERROR(ENOMEM);
break;
}
- cursor++;
+ if (*cursor)
+ cursor++;
if (++len == SIZE_MAX / sizeof(*nodes)) {
av_free(node_uri);
--
2.32.0
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