On Thu, Nov 21, 2024 at 03:39:05PM +0100, Kacper Michajlow wrote: > On Sun, 3 Nov 2024 at 11:24, Michael Niedermayer <mich...@niedermayer.cc> > wrote: > > > > Fixes: runtime error: signed integer overflow > > Fixes: > > 42536949/clusterfuzz-testcase-minimized-fuzzer_loadfile-6199846684393472 > > Found-by: ossfuzz > > Reported-by: Kacper Michajlow > > Tested-by: Kacper Michajlow > > Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc> > > --- > > libavformat/icodec.c | 2 +- > > 1 file changed, 1 insertion(+), 1 deletion(-) > > > > diff --git a/libavformat/icodec.c b/libavformat/icodec.c > > index afd0c71b1f9..b09d0060a65 100644 > > --- a/libavformat/icodec.c > > +++ b/libavformat/icodec.c > > @@ -198,7 +198,7 @@ static int read_packet(AVFormatContext *s, AVPacket > > *pkt) > > AV_WL32(buf + 32, image->nb_pal); > > } > > > > - if (image->nb_pal > INT_MAX / 4 - 14 - 40) > > + if (image->nb_pal > INT_MAX / 4 - 14 - 40U) > > return AVERROR_INVALIDDATA; > > > > AV_WL32(buf - 4, 14 + 40 + image->nb_pal * 4); > > -- > > 2.47.0
as the original author of icodec.c, this lgtm -- Peter (A907 E02F A6E5 0CD2 34CD 20D2 6760 79C5 AC40 DD6B)
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