1 files changed, 54 insertions, 0 deletions

diff --git a/meta/recipes-extended/cups/cups-1.4.6/cups-CVE-2011-3170.patch b/meta/recipes-extended/cups/cups-1.4.6/cups-CVE-2011-3170.patch
new file mode 100644
index 0000000000..fd1b95847c
--- /dev/null
+++ b/meta/recipes-extended/cups/cups-1.4.6/cups-CVE-2011-3170.patch
@@ -0,0 +1,54 @@
+cups CVE-2011-3170
+
+the patch come from:
+http://cups.org/strfiles/3914/str3914.patch
+
+The gif_read_lzw function in filter/image-gif.c in CUPS 1.4.8 and
+earlier does not properly handle the first code word in an LZW stream,
+which allows remote attackers to trigger a heap-based buffer overflow,
+and possibly execute arbitrary code, via a crafted stream, a different
+vulnerability than CVE-2011-2896.
+http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2011-3170
+
+Integrated-by: Li Wang <li.wang@windriver.com>
+---
+ filter/image-gif.c |   14 +++++++++-----
+ 1 files changed, 9 insertions(+), 5 deletions(-)
+
+diff --git a/filter/image-gif.c b/filter/image-gif.c
+index 9542704..3857c21 100644
+--- a/filter/image-gif.c
++++ b/filter/image-gif.c
+@@ -654,11 +654,13 @@ gif_read_lzw(FILE *fp,                    /* I - File to read from */
+ 
+     if (code >= max_code)
+     {
+-      *sp++ = firstcode;
+-      code  = oldcode;
++      if (sp < (stack + 8192))
++       *sp++ = firstcode;
++
++      code = oldcode;
+     }
+ 
+-    while (code >= clear_code)
++    while (code >= clear_code && sp < (stack + 8192))
+     {
+       *sp++ = table[1][code];
+       if (code == table[0][code])
+@@ -667,8 +669,10 @@ gif_read_lzw(FILE *fp,                     /* I - File to read from */
+       code = table[0][code];
+     }
+ 
+-    *sp++ = firstcode = table[1][code];
+-    code  = max_code;
++    if (sp < (stack + 8192))
++      *sp++ = firstcode = table[1][code];
++
++    code = max_code;
+ 
+     if (code < 4096)
+     {
+-- 
+1.7.0.5
+