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| author | Michael Niedermayer <michael@niedermayer.cc> | 2022-07-18 22:46:45 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2022-09-01 00:41:28 +0200 |
| commit | aeaa86aacd6804cf142bbdee280bf089f5c3971b (patch) | |
| tree | bae228ddee1ed4b2fa7782a0bfecf7ca2a9434b1 | |
| parent | a158789f0dccf9a4784c5772d88dc1c780985b68 (diff) | |
| download | ffmpeg-aeaa86aacd6804cf142bbdee280bf089f5c3971b.tar.gz | |
avcodec/exr: Check x/ysize
Fixes: OOM
Fixes: 48911/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_EXR_fuzzer-6352002510094336
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit 614a4d1476c6e3561ebab3977cb43b2b4b6406fd)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
| -rw-r--r-- | libavcodec/exr.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/libavcodec/exr.c b/libavcodec/exr.c index ded9d85000..85b0cab36b 100644 --- a/libavcodec/exr.c +++ b/libavcodec/exr.c @@ -1240,7 +1240,8 @@ static int decode_block(AVCodecContext *avctx, void *tdata, td->ysize = FFMIN(s->tile_attr.ySize, s->ydelta - tile_y * s->tile_attr.ySize); td->xsize = FFMIN(s->tile_attr.xSize, s->xdelta - tile_x * s->tile_attr.xSize); - if (td->xsize * (uint64_t)s->current_channel_offset > INT_MAX) + if (td->xsize * (uint64_t)s->current_channel_offset > INT_MAX || + av_image_check_size2(td->xsize, td->ysize, s->avctx->max_pixels, AV_PIX_FMT_NONE, 0, s->avctx) < 0) return AVERROR_INVALIDDATA; td->channel_line_size = td->xsize * s->current_channel_offset;/* uncompress size of one line */ @@ -1264,7 +1265,8 @@ static int decode_block(AVCodecContext *avctx, void *tdata, td->ysize = FFMIN(s->scan_lines_per_block, s->ymax - line + 1); /* s->ydelta - line ?? */ td->xsize = s->xdelta; - if (td->xsize * (uint64_t)s->current_channel_offset > INT_MAX) + if (td->xsize * (uint64_t)s->current_channel_offset > INT_MAX || + av_image_check_size2(td->xsize, td->ysize, s->avctx->max_pixels, AV_PIX_FMT_NONE, 0, s->avctx) < 0) return AVERROR_INVALIDDATA; td->channel_line_size = td->xsize * s->current_channel_offset;/* uncompress size of one line */ |