Fix multiple vulnerabilities (closes: #850432)

- New patch 934_menu.patch to fix buffer overflow (tats/w3m#49)
- New patch 935_shiftanchor.patch to fix buffer overflow (tats/w3m#62)
- New patch 936_metarefresh.patch to fix buffer overflow (tats/w3m#63)
- New patch 937_lineproc0.patch to fix buffer overflow (tats/w3m#67)
- New patch 938_lineproc2body.patch to fix buffer overflow (tats/w3m#61)
- New patch 939_textarea.patch to fix buffer overflow (tats/w3m#58)
- New patch 940_tabattr.patch to fix buffer overflow (tats/w3m#60)
- New patch 941_integeredwidth.patch to fix buffer overflow (tats/w3m#70)
- New patch 942_tridvalue.patch to fix buffer overflow (tats/w3m#71)
- New patch 943_pushlink.patch to fix buffer overflow (tats/w3m#64, #66)
- New patch 944_lineproc0.patch to fix use after free (tats/w3m#65)
- New patch 945_wtfstrwidth.patch to fix buffer overflow (tats/w3m#57)
- New patch 946_strnewsize.patch to fix buffer overflow (tats/w3m#72)
- New patch 947_realcolumn.patch to fix buffer overflow (tats/w3m#69)
- New patch 948_getmclen.patch to fix buffer overflow
  (tats/w3m#59, #73, #74, #75, #76, #78, #79, #80, #83, #84)
- New patch 949_wtftowcs.patch to fix buffer overflow (tats/w3m#77)
- New patch 950_textarea.patch to fix infinite loop (tats/w3m#85)
- New patch 951_lineproc0.patch to fix use after free (tats/w3m#81)
- New patch 952_formupdatebuffer.patch to fix buffer overflow (tats/w3m#82)
- New patch 953_formupdateline.patch to fix buffer overflow
  (tats/w3m#68#issuecomment-266214643)
- New patch 954_wtfparse1.patch to fix buffer overflow (tats/w3m#68)

1 files changed, 25 insertions, 0 deletions

diff --git a/debian/patches/947_realcolumn.patch b/debian/patches/947_realcolumn.patch
new file mode 100644
index 0000000..152088e
--- /dev/null
+++ b/debian/patches/947_realcolumn.patch
@@ -0,0 +1,25 @@
+Subject: Prevent negative array index for realColumn in calcPosition()
+From: Tatsuya Kinoshita <tats@debian.org>
+Bug-Debian: https://github.com/tats/w3m/issues/69
+Origin: https://anonscm.debian.org/cgit/collab-maint/w3m.git/commit/?id=1978455e2ed01699789e8374d29515b74b867b2b
+
+---
+ etc.c | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/etc.c b/etc.c
+index 8fe1215..af8a5d3 100644
+--- a/etc.c
++++ b/etc.c
+@@ -498,7 +498,7 @@ calcPosition(char *l, Lineprop *pr, int len, int pos, int bpos, int mode)
+     static char *prevl = NULL;
+     int i, j;
+ 
+-    if (l == NULL || len == 0)
++    if (l == NULL || len == 0 || pos < 0)
+ 	return bpos;
+     if (l == prevl && mode == CP_AUTO) {
+ 	if (pos <= len)
+-- 
+2.10.2
+