gnu: rpm: Fix CVE-2014-8118.

* gnu/packages/patches/rpm-CVE-2014-8118.patch: New file.
* gnu/local.mk (dist_patch_DATA): Add it.
* gnu/packages/package-management.scm (rpm): Use it.

gnu/local.mk

@@ -716,6 +716,7 @@ dist_patch_DATA =						\
   %D%/packages/patches/ratpoison-shell.patch			\
   %D%/packages/patches/readline-link-ncurses.patch		\
   %D%/packages/patches/ripperx-missing-file.patch		\
+  %D%/packages/patches/rpm-CVE-2014-8118.patch			\
   %D%/packages/patches/rsem-makefile.patch			\
   %D%/packages/patches/ruby-symlinkfix.patch                    \
   %D%/packages/patches/rush-CVE-2013-6889.patch			\

gnu/packages/package-management.scm

@@ -334,7 +334,8 @@ symlinks to the files in a common directory such as /usr/local.")
                                   version ".tar.bz2"))
               (sha256
                (base32
-                "0a82ym8phx7g0f3k6smvxnvzh7yv857l42xafk49689kzhld5pbp"))))
+                "0a82ym8phx7g0f3k6smvxnvzh7yv857l42xafk49689kzhld5pbp"))
+              (patches (search-patches "rpm-CVE-2014-8118.patch"))))
     (build-system gnu-build-system)
     (arguments
      '(#:configure-flags '("--with-external-db"   ;use the system's bdb

gnu/packages/patches/rpm-CVE-2014-8118.patch

@@ -0,0 +1,25 @@
+Fix CVE-2014-8118 (integer overflow allowing arbitrary remote code
+execution via crafted CPIO header).
+
+https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-8118
+
+Source:
+https://bugzilla.redhat.com/attachment.cgi?id=962159&action=diff
+
+Adopted by Debian:
+http://anonscm.debian.org/cgit/collab-maint/rpm.git/plain/debian/patches/CVE-2014-8118.patch
+
+diff --git a/lib/cpio.c b/lib/cpio.c
+index 253ff0f..600633a 100644
+--- a/lib/cpio.c
++++ b/lib/cpio.c
+@@ -399,6 +399,9 @@ int rpmcpioHeaderRead(rpmcpio_t cpio, char ** path, int * fx)
+ 
+     GET_NUM_FIELD(hdr.filesize, fsize);
+     GET_NUM_FIELD(hdr.namesize, nameSize);
++    if (nameSize <= 0 || nameSize > 4096) {
++        return RPMERR_BAD_HEADER;
++    }
+ 
+     char name[nameSize + 1];
+     read = Fread(name, nameSize, 1, cpio->fd);