From 13df9bfbcb404e90933c5bb7d8a7fe04f506e3bd Mon Sep 17 00:00:00 2001 From: Paul B Mahol Date: Wed, 2 Dec 2020 13:46:22 +0100 Subject: [PATCH] avutil/avsscanf: fix possible overreads when dealing with %c or %s --- libavutil/avsscanf.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/libavutil/avsscanf.c b/libavutil/avsscanf.c index 850c117940..b7f0f71c2d 100644 --- a/libavutil/avsscanf.c +++ b/libavutil/avsscanf.c @@ -113,7 +113,7 @@ static int ffshgetc(FFFILE *f) } #define shlim(f, lim) ffshlim((f), (lim)) -#define shgetc(f) (((f)->rpos != (f)->shend) ? *(f)->rpos++ : ffshgetc(f)) +#define shgetc(f) (((f)->rpos < (f)->shend) ? *(f)->rpos++ : ffshgetc(f)) #define shunget(f) ((f)->shend ? (void)(f)->rpos-- : (void)0) static const unsigned char table[] = { -1,