On Thu, Jan 12, 2023 at 01:02:57AM +0100, Andreas Rheinhardt wrote: > Michael Niedermayer: > > Fixes: out of array access > > Fixes: > > 48567/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_SGI_fuzzer-6704753329700864 > > Fixes: > > 48567/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_SGI_fuzzer-6683986844057600 > > Fixes: > > 48567/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_SGI_fuzzer-6697387691474944 > > > > Found-by: continuous fuzzing process > > https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg > > Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc> > > --- > > libavcodec/sgidec.c | 2 +- > > 1 file changed, 1 insertion(+), 1 deletion(-) > > > > diff --git a/libavcodec/sgidec.c b/libavcodec/sgidec.c > > index 6ff2ee97f6..92083f23de 100644 > > --- a/libavcodec/sgidec.c > > +++ b/libavcodec/sgidec.c > > @@ -159,7 +159,7 @@ static int read_uncompressed_sgi(uint8_t *const out[4], > > const ptrdiff_t stride[4 > > unsigned rowsize = width * bytes_per_channel; > > > > /* Test buffer size. */ > > - if (rowsize * (int64_t)height > bytestream2_get_bytes_left(g)) > > + if (rowsize * (int64_t)height * nb_components > > > bytestream2_get_bytes_left(g)) > > return AVERROR_INVALIDDATA; > > > > for (unsigned z = 0; z < nb_components; z++) { > > LGTM. (Sorry for having forgotten this in > ce4713ea731b9deb0440abe8d8a2a41d2957efc5.)
will apply thx [...] -- Michael GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB Concerning the gods, I have no means of knowing whether they exist or not or of what sort they may be, because of the obscurity of the subject, and the brevity of human life -- Protagoras
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