Fixes: signed integer overflow: 9223372036854775807 + 8 cannot be represented in type 'long'
Fixes: 27341/clusterfuzz-testcase-minimized-ffmpeg_dem_W64_fuzzer-5442833206738944
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
while (!avio_feof(pb)) {
avio_read(pb, guid, 16);
size = avio_rl64(pb);
- if (size <= 24)
+ if (size <= 24 || size > INT64_MAX - 8)
return AVERROR_INVALIDDATA;
if (!memcmp(guid, guid1, 16))
return size;