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commit a874da5ec1387ab19350f1a1fa7aef97e74ffad0 Author: Michael Niedermayer <[email protected]> AuthorDate: Sat Feb 21 02:05:03 2026 +0100 Commit: Michael Niedermayer <[email protected]> CommitDate: Tue May 5 18:55:04 2026 +0200 avcodec/exr: check tile_attr.x/ySize Fixes: division by zero Fixes: 473579863/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_EXR_DEC_fuzzer-5105281257504768 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer <[email protected]> (cherry picked from commit c5ccc13fe047f4588a3100d9eb7e6b4c22b09a6c) Signed-off-by: Michael Niedermayer <[email protected]> --- libavcodec/exr.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/libavcodec/exr.c b/libavcodec/exr.c index 52a085b802..280bb16936 100644 --- a/libavcodec/exr.c +++ b/libavcodec/exr.c @@ -2218,6 +2218,8 @@ static int decode_frame(AVCodecContext *avctx, void *data, } if (s->is_tile) { + if (s->tile_attr.ySize <= 0 || s->tile_attr.xSize <= 0) + return AVERROR_INVALIDDATA; nb_blocks = ((s->xdelta + s->tile_attr.xSize - 1) / s->tile_attr.xSize) * ((s->ydelta + s->tile_attr.ySize - 1) / s->tile_attr.ySize); } else { /* scanline */ _______________________________________________ ffmpeg-cvslog mailing list -- [email protected] To unsubscribe send an email to [email protected]
