Fixes: signed integer overflow: -2272 + -2147483360 cannot be represented in type 'int' Fixes: 30009/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_EXR_fuzzer-5005660322398208
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc> --- libavcodec/exr.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/libavcodec/exr.c b/libavcodec/exr.c index 6e6ce4275c..752ab17d7a 100644 --- a/libavcodec/exr.c +++ b/libavcodec/exr.c @@ -1029,6 +1029,11 @@ static int decode_block(AVCodecContext *avctx, void *tdata, return AVERROR_PATCHWELCOME; } + if (tile_x && s->tile_attr.xSize + (int64_t)FFMAX(s->xmin, 0) >= INT_MAX / tile_x ) + return AVERROR_INVALIDDATA; + if (tile_y && s->tile_attr.ySize + (int64_t)FFMAX(s->ymin, 0) >= INT_MAX / tile_y ) + return AVERROR_INVALIDDATA; + line = s->ymin + s->tile_attr.ySize * tile_y; col = s->tile_attr.xSize * tile_x; -- 2.17.1 _______________________________________________ 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".
