glibc: fix CVE-2016-1234, CVE-2016-3075, CVE-2016-5417

Only relevant for krogoth since version 2.24+ (master, morty) is not affected.

(From OE-Core rev: 88be4b40bacc7c8a08fb76fc220f491deb2c1c3a)

Signed-off-by: Pascal Bach <pascal.bach@siemens.com>
Signed-off-by: Armin Kuster <akuster808@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

1 files changed, 37 insertions, 0 deletions

diff --git a/meta/recipes-core/glibc/glibc/CVE-2016-3075.patch b/meta/recipes-core/glibc/glibc/CVE-2016-3075.patch
new file mode 100644
index 0000000000..7b9dc4f5c3
--- /dev/null
+++ b/meta/recipes-core/glibc/glibc/CVE-2016-3075.patch
@@ -0,0 +1,37 @@
+glibc-2.23: Fix CVE-2016-3075
+
+[No upstream tracking] -- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2016-3075
+
+resolv/nss_dns/dns-network.c: Stack overflow in _nss_dns_getnetbyname_r
+
+The defensive copy is not needed because the name may not alias the
+output buffer.
+
+Upstream-Status: Backport
+CVE: CVE-2016-3075
+Signed-off-by: Andrej Valek <andrej.valek@siemens.com>
+Signed-off-by: Pascal Bach <pascal.bach@siemens.com>
+
+diff --git a/resolv/nss_dns/dns-network.c b/resolv/nss_dns/dns-network.c
+index 2eb2f67..8f301a7 100644
+--- a/resolv/nss_dns/dns-network.c
++++ b/resolv/nss_dns/dns-network.c
+@@ -118,17 +118,14 @@ _nss_dns_getnetbyname_r (const char *name, struct netent *result,
+   } net_buffer;
+   querybuf *orig_net_buffer;
+   int anslen;
+-  char *qbuf;
+   enum nss_status status;
+ 
+   if (__res_maybe_init (&_res, 0) == -1)
+     return NSS_STATUS_UNAVAIL;
+ 
+-  qbuf = strdupa (name);
+-
+   net_buffer.buf = orig_net_buffer = (querybuf *) alloca (1024);
+ 
+-  anslen = __libc_res_nsearch (&_res, qbuf, C_IN, T_PTR, net_buffer.buf->buf,
++  anslen = __libc_res_nsearch (&_res, name, C_IN, T_PTR, net_buffer.buf->buf,
+                               1024, &net_buffer.ptr, NULL, NULL, NULL, NULL);
+   if (anslen < 0)
+     {