From 44a7f17d0b20e6f8d836b2957e3e357b639f19a2 Mon Sep 17 00:00:00 2001 From: Michael Niedermayer Date: Sat, 14 Nov 2015 00:51:56 +0100 Subject: [PATCH] avcodec/jpeg2000dec: Check for duplicate SIZ marker Fixes: 0231a17345734228011c6f35a64e4594/asan_heap-oob_1d92a72_3218_1213809a9e3affec77e4c191fdfdc0a9.mov Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind Signed-off-by: Michael Niedermayer --- libavcodec/jpeg2000dec.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/libavcodec/jpeg2000dec.c b/libavcodec/jpeg2000dec.c index 31f3db8d68..71cb3a9240 100644 --- a/libavcodec/jpeg2000dec.c +++ b/libavcodec/jpeg2000dec.c @@ -1797,6 +1797,7 @@ static void jpeg2000_dec_cleanup(Jpeg2000DecoderContext *s) memset(s->properties, 0, sizeof(s->properties)); memset(&s->poc , 0, sizeof(s->poc)); s->numXtiles = s->numYtiles = 0; + s->ncomponents = 0; } static int jpeg2000_read_main_headers(Jpeg2000DecoderContext *s) @@ -1854,6 +1855,10 @@ static int jpeg2000_read_main_headers(Jpeg2000DecoderContext *s) switch (marker) { case JPEG2000_SIZ: + if (s->ncomponents) { + av_log(s->avctx, AV_LOG_ERROR, "Duplicate SIZ\n"); + return AVERROR_INVALIDDATA; + } ret = get_siz(s); if (!s->tile) s->numXtiles = s->numYtiles = 0;