1 files changed, 39 insertions, 0 deletions
diff --git a/gnu/packages/patches/unzip-CVE-2016-9844.patch b/gnu/packages/patches/unzip-CVE-2016-9844.patch
new file mode 100644
index 0000000000..0e4a173397
--- /dev/null
+++ b/gnu/packages/patches/unzip-CVE-2016-9844.patch
@@ -0,0 +1,39 @@
+From 754137e70cf58a64ad524b704a86b651ba0cde07 Mon Sep 17 00:00:00 2001
+From: Petr Stodulka <pstodulk@redhat.com>
+Date: Wed, 14 Dec 2016 16:30:36 +0100
+Subject: [PATCH] Fix CVE-2016-9844 (rhbz#1404283)
+
+Fixes buffer overflow in zipinfo in similar way like fix for
+CVE-2014-9913 provided by upstream.
+---
+ zipinfo.c | 14 +++++++++++++-
+ 1 file changed, 13 insertions(+), 1 deletion(-)
+
+diff --git a/zipinfo.c b/zipinfo.c
+index c03620e..accca2a 100644
+--- a/zipinfo.c
++++ b/zipinfo.c
+@@ -1984,7 +1984,19 @@ static int zi_short(__G)   /* return PK-type error code */
+         ush  dnum=(ush)((G.crec.general_purpose_bit_flag>>1) & 3);
+         methbuf[3] = dtype[dnum];
+     } else if (methnum >= NUM_METHODS) {   /* unknown */
+-        sprintf(&methbuf[1], "%03u", G.crec.compression_method);
++        /* 2016-12-05 SMS.
++         * https://launchpad.net/bugs/1643750
++         * Unexpectedly large compression methods overflow
++         * &methbuf[].  Use the old, three-digit decimal format
++         * for values which fit.  Otherwise, sacrifice the "u",
++         * and use four-digit hexadecimal.
++         */
++        if (G.crec.compression_method <= 999) {
++              sprintf( &methbuf[ 1], "%03u", G.crec.compression_method);
++        } else {
++              sprintf( &methbuf[ 0], "%04X", G.crec.compression_method);
++        }
++
+     }
+ 
+     for (k = 0;  k < 15;  ++k)
+-- 
+2.5.5
+