guix/gnu/packages/patches/openjpeg-CVE-2017-12982.patch

http://openwall.com/lists/oss-security/2017/08/21/1
https://github.com/uclouvain/openjpeg/commit/baf0c1ad4572daa89caa3b12985bdd93530f0dd7.patch

From baf0c1ad4572daa89caa3b12985bdd93530f0dd7 Mon Sep 17 00:00:00 2001
From: Even Rouault <even.rouault@spatialys.com>
Date: Mon, 14 Aug 2017 17:26:58 +0200
Subject: [PATCH] bmp_read_info_header(): reject bmp files with biBitCount == 0
 (#983)

---
 src/bin/jp2/convertbmp.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/bin/jp2/convertbmp.c b/src/bin/jp2/convertbmp.c
index b49e7a080..2715fdf24 100644
--- a/src/bin/jp2/convertbmp.c
+++ b/src/bin/jp2/convertbmp.c
@@ -392,6 +392,10 @@ static OPJ_BOOL bmp_read_info_header(FILE* IN, OPJ_BITMAPINFOHEADER* header)
 
     header->biBitCount  = (OPJ_UINT16)getc(IN);
     header->biBitCount |= (OPJ_UINT16)((OPJ_UINT32)getc(IN) << 8);
+    if (header->biBitCount == 0) {
+        fprintf(stderr, "Error, invalid biBitCount %d\n", 0);
+        return OPJ_FALSE;
+    }
 
     if (header->biSize >= 40U) {
         header->biCompression  = (OPJ_UINT32)getc(IN);