Fixes: out array read
Fixes: 26610/clusterfuzz-testcase-minimized-ffmpeg_dem_CONCAT_fuzzer-5631838049271808
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Reviewed-by: Andreas Rheinhardt <andreas.rheinhardt@gmail.com>
Reviewed-by: Nicolas George <george@nsup.org>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
ConcatFile *file;
char *url = NULL;
const char *proto;
- size_t url_len, proto_len;
+ const char *ptr;
+ size_t url_len;
int ret;
if (cat->safe > 0 && !safe_filename(filename)) {
}
proto = avio_find_protocol_name(filename);
- proto_len = proto ? strlen(proto) : 0;
- if (proto && !memcmp(filename, proto, proto_len) &&
- (filename[proto_len] == ':' || filename[proto_len] == ',')) {
+ if (proto && av_strstart(filename, proto, &ptr) &&
+ (*ptr == ':' || *ptr == ',')) {
url = filename;
filename = NULL;
} else {