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From 4241ae6fbbf1de9658764a80944dc8108f2b4154 Mon Sep 17 00:00:00 2001
From: Even Rouault <even.rouault@spatialys.com>
Date: Tue, 15 Aug 2017 11:55:58 +0200
Subject: [PATCH] Fix assertion in debug mode / heap-based buffer overflow in
opj_write_bytes_LE for Cinema profiles with numresolutions = 1 (#985)
---
src/lib/openjp2/j2k.c | 14 ++++++++++----
1 file changed, 10 insertions(+), 4 deletions(-)
diff --git a/src/lib/openjp2/j2k.c b/src/lib/openjp2/j2k.c
index a2521ebbc..54b490a8c 100644
--- a/src/lib/openjp2/j2k.c
+++ b/src/lib/openjp2/j2k.c
@@ -6573,10 +6573,16 @@ static void opj_j2k_set_cinema_parameters(opj_cparameters_t *parameters,
/* Precincts */
parameters->csty |= 0x01;
- parameters->res_spec = parameters->numresolution - 1;
- for (i = 0; i < parameters->res_spec; i++) {
- parameters->prcw_init[i] = 256;
- parameters->prch_init[i] = 256;
+ if (parameters->numresolution == 1) {
+ parameters->res_spec = 1;
+ parameters->prcw_init[0] = 128;
+ parameters->prch_init[0] = 128;
+ } else {
+ parameters->res_spec = parameters->numresolution - 1;
+ for (i = 0; i < parameters->res_spec; i++) {
+ parameters->prcw_init[i] = 256;
+ parameters->prch_init[i] = 256;
+ }
}
/* The progression order shall be CPRL */
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