1 files changed, 29 insertions, 0 deletions
diff --git a/pkgs/development/libraries/zlib/CVE-2016-9842.patch b/pkgs/development/libraries/zlib/CVE-2016-9842.patch
new file mode 100644
index 000000000000..e729f7e162cb
--- /dev/null
+++ b/pkgs/development/libraries/zlib/CVE-2016-9842.patch
@@ -0,0 +1,29 @@
+From e54e1299404101a5a9d0cf5e45512b543967f958 Mon Sep 17 00:00:00 2001
+From: Mark Adler <madler@alumni.caltech.edu>
+Date: Sat, 5 Sep 2015 17:45:55 -0700
+Subject: [PATCH] Avoid shifts of negative values inflateMark().
+
+The C standard says that bit shifts of negative integers is
+undefined.  This casts to unsigned values to assure a known
+result.
+---
+ inflate.c | 5 +++--
+ 1 file changed, 3 insertions(+), 2 deletions(-)
+
+diff --git a/inflate.c b/inflate.c
+index 2889e3a..a718416 100644
+--- a/inflate.c
++++ b/inflate.c
+@@ -1506,9 +1506,10 @@ z_streamp strm;
+ {
+     struct inflate_state FAR *state;
+ 
+-    if (strm == Z_NULL || strm->state == Z_NULL) return -1L << 16;
++    if (strm == Z_NULL || strm->state == Z_NULL)
++        return (long)(((unsigned long)0 - 1) << 16);
+     state = (struct inflate_state FAR *)strm->state;
+-    return ((long)(state->back) << 16) +
++    return (long)(((unsigned long)((long)state->back)) << 16) +
+         (state->mode == COPY ? state->length :
+             (state->mode == MATCH ? state->was - state->length : 0));
+ }