From 4a404cb5b90b878cbe1bb528fac65cf508668cc5 Mon Sep 17 00:00:00 2001 From: Vitaly Buka Date: Sun, 20 Aug 2017 11:56:47 -0700 Subject: avformat/mov: Fix signed integer overflows with total_size Signed integer overflow is undefined behavior. Detected with clang and -fsanitize=signed-integer-overflow Signed-off-by: Vitaly Buka Signed-off-by: Michael Niedermayer --- libavformat/mov.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/libavformat/mov.c b/libavformat/mov.c index 522ce60c2d..a14c9f182b 100644 --- a/libavformat/mov.c +++ b/libavformat/mov.c @@ -5572,7 +5572,7 @@ static int mov_read_default(MOVContext *c, AVIOContext *pb, MOVAtom atom) if (atom.size < 0) atom.size = INT64_MAX; - while (total_size + 8 <= atom.size && !avio_feof(pb)) { + while (total_size <= atom.size - 8 && !avio_feof(pb)) { int (*parse)(MOVContext*, AVIOContext*, MOVAtom) = NULL; a.size = atom.size; a.type=0; -- cgit v1.2.3