Fixes: signed integer overflow: 2314885530818453536 + 9151314442816847872 cannot be represented in type 'long' Fixes: 68359/clusterfuzz-testcase-minimized-ffmpeg_dem_MOV_fuzzer-6571950311800832
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc> --- libavformat/mov.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/libavformat/mov.c b/libavformat/mov.c index 9016cd5ad08..46cbce98040 100644 --- a/libavformat/mov.c +++ b/libavformat/mov.c @@ -8131,7 +8131,9 @@ static int mov_read_iloc(MOVContext *c, AVIOContext *pb, MOVAtom atom) } for (int j = 0; j < extent_count; j++) { if (rb_size(pb, &extent_offset, offset_size) < 0 || - rb_size(pb, &extent_length, length_size) < 0) + rb_size(pb, &extent_length, length_size) < 0 || + base_offset < 0 || extent_offset < 0 || + base_offset + (uint64_t)extent_offset > INT64_MAX) return AVERROR_INVALIDDATA; if (offset_type == 1) c->heif_item[i].is_idat_relative = 1; -- 2.45.2 _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-devel To unsubscribe, visit link above, or email ffmpeg-devel-requ...@ffmpeg.org with subject "unsubscribe".
