[FFmpeg-devel] [PATCH 4/5] avcodec/atrac3: Check for huge block aligns

[Michael Niedermayer]

On Sat, Nov 02, 2019 at 05:06:00PM +0100, Michael Niedermayer wrote:
> The largest documented frame size = block align is 1024 bytes
> (https://wiki.multimedia.cx/index.php/ATRAC3)
> 
> Without a limit this can allocate arbitrary memory and trigger OOM
> Fixes: OOM
> Fixes: 18337/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_ATRAC3_fuzzer-5763861478637568
> Fixes: 18556/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_ATRAC3AL_fuzzer-5646183334936576
> 
> Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
> Signed-off-by: Michael Niedermayer <michael at niedermayer.cc>
> ---
>  libavcodec/atrac3.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)

will apply

[...]
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Michael     GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB

Any man who breaks a law that conscience tells him is unjust and willingly 
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very highest respect for law. - Martin Luther King Jr
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