From 50870dd3de5c69f90a95ca7f5d8eeaffe1b675ac Mon Sep 17 00:00:00 2001 From: Michael Niedermayer Date: Sun, 15 Nov 2015 21:12:50 +0100 Subject: [PATCH] avcodec/jpeg2000dec: Check SIZ dimensions to be within the supported range Fixes potential integer overflows Fixes: 03e0abe721b1174856d41a1eb5d6a896/signal_sigabrt_7ffff6ae7cc9_3813_e71bf3541abed3ccba031cd5ba0269a4.avi This fix is choosen to be simple to backport, better solution for master is planed Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind Signed-off-by: Michael Niedermayer (cherry picked from commit 6ef819c40bcc2175edba7ce9e20c3036c01b36b9) Signed-off-by: Michael Niedermayer --- libavcodec/jpeg2000dec.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/libavcodec/jpeg2000dec.c b/libavcodec/jpeg2000dec.c index 83154c729b..ab34df0187 100644 --- a/libavcodec/jpeg2000dec.c +++ b/libavcodec/jpeg2000dec.c @@ -250,6 +250,10 @@ static int get_siz(Jpeg2000DecoderContext *s) avpriv_request_sample(s->avctx, "Support for image offsets"); return AVERROR_PATCHWELCOME; } + if (s->width > 32768U || s->height > 32768U) { + avpriv_request_sample(s->avctx, "Large Dimensions"); + return AVERROR_PATCHWELCOME; + } if (ncomponents <= 0) { av_log(s->avctx, AV_LOG_ERROR, "Invalid number of components: %d\n",