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| author | Michael Niedermayer <michael@niedermayer.cc> | 2022-07-18 22:46:45 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2022-07-21 19:27:27 +0200 |
| commit | 614a4d1476c6e3561ebab3977cb43b2b4b6406fd (patch) | |
| tree | 399f9037706be64a10fda129b4515a592ad077dc /libavcodec/exr.c | |
| parent | f7d510b33ff33d2f5cb096017ee1c00f624cc138 (diff) | |
| download | ffmpeg-614a4d1476c6e3561ebab3977cb43b2b4b6406fd.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>
Diffstat (limited to 'libavcodec/exr.c')
| -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 b8a6ad78db..e4b66a08ac 100644 --- a/libavcodec/exr.c +++ b/libavcodec/exr.c @@ -1241,7 +1241,8 @@ 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 */ @@ -1265,7 +1266,8 @@ 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 */ |