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, 26 insertions, 0 deletions

diff --git a/debian/patches/944_lineproc0.patch b/debian/patches/944_lineproc0.patch
new file mode 100644
index 0000000..6cee164
--- /dev/null
+++ b/debian/patches/944_lineproc0.patch
@@ -0,0 +1,26 @@
+Subject: Prevent heap-use-after-free in HTMLlineproc0()
+From: Tatsuya Kinoshita <tats@debian.org>
+Bug-Debian: https://github.com/tats/w3m/issues/65
+Origin: https://anonscm.debian.org/cgit/collab-maint/w3m.git/commit/?id=26484fc1381e5ec758db950f2bd17f1496220c92
+
+---
+ file.c | 3 ++-
+ 1 file changed, 2 insertions(+), 1 deletion(-)
+
+diff --git a/file.c b/file.c
+index 483180a..f5ca8d2 100644
+--- a/file.c
++++ b/file.c
+@@ -6585,7 +6585,8 @@ HTMLlineproc0(char *line, struct html_feed_environ *h_env, int internal)
+ 		indent = h_env->envs[h_env->envc].indent;
+ 		if (obuf->bp.pos - i > indent) {
+ 		    Str line;
+-		    append_tags(obuf);
++		    append_tags(obuf);	/* may reallocate the buffer */
++		    bp = obuf->line->ptr + obuf->bp.len;
+ 		    line = Strnew_charp(bp);
+ 		    Strshrink(obuf->line, obuf->line->length - obuf->bp.len);
+ #ifdef FORMAT_NICE
+-- 
+2.10.2
+