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/946_strnewsize.patch b/debian/patches/946_strnewsize.patch
new file mode 100644
index 0000000..713ec0c
--- /dev/null
+++ b/debian/patches/946_strnewsize.patch
@@ -0,0 +1,25 @@
+Subject: Prevent heap-buffer-overflow in Strnew_size()
+From: Tatsuya Kinoshita <tats@debian.org>
+Bug-Debian: https://github.com/tats/w3m/issues/72
+Origin: https://anonscm.debian.org/cgit/collab-maint/w3m.git/commit/?id=4381dffaa3fdf94c384f3588b5c7dff3ba1cc4ae
+
+---
+ Str.c | 2 ++
+ 1 file changed, 2 insertions(+)
+
+diff --git a/Str.c b/Str.c
+index 5287c0f..7a094f5 100644
+--- a/Str.c
++++ b/Str.c
+@@ -48,6 +48,8 @@ Str
+ Strnew_size(int n)
+ {
+     Str x = GC_MALLOC(sizeof(struct _Str));
++    if (n < 0)
++	n = 0;
+     x->ptr = GC_MALLOC_ATOMIC(n + 1);
+     x->ptr[0] = '\0';
+     x->area_size = n + 1;
+-- 
+2.10.2
+