[FFmpeg-devel] [PATCH] avcodec/tiff: Check input space in dng_decode_jpeg()

Michael Niedermayer michael at niedermayer.cc
Fri Jul 10 21:22:55 EEST 2020


On Fri, Jul 10, 2020 at 05:47:30PM +0200, Michael Niedermayer wrote:
> Fixes: out of array read
> Fixes: 24034/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_TIFF_fuzzer-5111884337119232
> 
> 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/tiff.c | 3 +++
>  1 file changed, 3 insertions(+)

will apply and backport

[...]
-- 
Michael     GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB

Awnsering whenever a program halts or runs forever is
On a turing machine, in general impossible (turings halting problem).
On any real computer, always possible as a real computer has a finite number
of states N, and will either halt in less than N cycles or never halt.
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