1 files changed, 60 insertions, 0 deletions
diff --git a/libre/mplayer-vaapi-libre/subreader-fix-srt-parsing.patch b/libre/mplayer-vaapi-libre/subreader-fix-srt-parsing.patch
new file mode 100644
index 000000000..84f2de4d9
--- /dev/null
+++ b/libre/mplayer-vaapi-libre/subreader-fix-srt-parsing.patch
@@ -0,0 +1,60 @@
+From d98e61ea438db66323734ad1b6bea66411a3c97b Mon Sep 17 00:00:00 2001
+From: wm4 <wm4@nowhere>
+Date: Tue, 30 Apr 2013 00:09:31 +0200
+Subject: [PATCH] subreader: fix out of bound write access when parsing .srt
+
+This broke .srt subtitles on gcc-4.8. The breakage was relatively
+subtle: it set all hour components to 0, while everything else was
+parsed successfully.
+
+But the problem is really that sscanf wrote 1 byte past the sep
+variable (or more, for invalid/specially prepared input). The %[..]
+format specifier is unbounded. Fix that by letting sscanf drop the
+parsed contents with "*", and also make it skip only one input
+character by adding "1" (=> "%*1[...").
+
+The out of bound write could easily lead to security issues.
+
+Also, this change makes .srt subtitle parsing slightly more strict.
+Strictly speaking this is an unrelated change, but do it anyway. It's
+more correct.
+---
+ sub/subreader.c | 8 ++++----
+ 1 file changed, 4 insertions(+), 4 deletions(-)
+
+ (foutrelis: adjusted variable names in first hunk to apply to mplayer)
+
+diff --git a/sub/subreader.c b/sub/subreader.c
+index 23da4c7..0f1b6c9 100644
+--- a/sub/subreader.c
++++ b/sub/subreader.c
+@@ -386,14 +386,14 @@ static subtitle *sub_ass_read_line_subviewer(stream_t *st, subtitle *current,
+     int h1, m1, s1, ms1, h2, m2, s2, ms2, j = 0;
+ 
+     while (!current->text[0]) {
+-        char line[LINE_LEN + 1], full_line[LINE_LEN + 1], sep;
++        char line[LINE_LEN + 1], full_line[LINE_LEN + 1];
+         int i;
+ 
+         /* Parse SubRip header */
+         if (!stream_read_line(st, line, LINE_LEN, utf16))
+             return NULL;
+-        if (sscanf(line, "%d:%d:%d%[,.:]%d --> %d:%d:%d%[,.:]%d",
+-                     &h1, &m1, &s1, &sep, &ms1, &h2, &m2, &s2, &sep, &ms2) < 10)
++        if (sscanf(line, "%d:%d:%d%*1[,.:]%d --> %d:%d:%d%*1[,.:]%d",
++                     &h1, &m1, &s1, &ms1, &h2, &m2, &s2, &ms2) < 8)
+             continue;
+ 
+         current->start = a1 * 360000 + a2 * 6000 + a3 * 100 + a4 / 10;
+@@ -450,7 +450,7 @@ static subtitle *sub_read_line_subviewer(stream_t *st,subtitle *current,
+         return sub_ass_read_line_subviewer(st, current, args);
+     while (!current->text[0]) {
+ 	if (!stream_read_line (st, line, LINE_LEN, utf16)) return NULL;
+-	if ((len=sscanf (line, "%d:%d:%d%[,.:]%d --> %d:%d:%d%[,.:]%d",&a1,&a2,&a3,(char *)&i,&a4,&b1,&b2,&b3,(char *)&i,&b4)) < 10)
++	if ((len=sscanf (line, "%d:%d:%d%*1[,.:]%d --> %d:%d:%d%*1[,.:]%d",&a1,&a2,&a3,&a4,&b1,&b2,&b3,&b4)) < 8)
+ 	    continue;
+ 	current->start = a1*360000+a2*6000+a3*100+a4/10;
+ 	current->end   = b1*360000+b2*6000+b3*100+b4/10;
+-- 
+1.8.1.6
+