dhcp: fix CVE-2021-25217

A buffer overrun in lease file parsing code
can be used to exploit a common vulnerability shared by dhcpd and dhclient.

reference:
https://www.openwall.com/lists/oss-security/2021/05/26/6
https://kb.isc.org/docs/cve-2021-25217
(From OE-Core rev: 58fa175702f0cd8f00dc5e7938fb55108921d324)

Signed-off-by: Steve Sakoman <steve@sakoman.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

1 files changed, 1 insertions, 0 deletions

diff --git a/meta/recipes-connectivity/dhcp/dhcp_4.4.2.bb b/meta/recipes-connectivity/dhcp/dhcp_4.4.2.bb
index b56a204821..5609a350cc 100644
--- a/meta/recipes-connectivity/dhcp/dhcp_4.4.2.bb
+++ b/meta/recipes-connectivity/dhcp/dhcp_4.4.2.bb
@@ -10,6 +10,7 @@ SRC_URI += "file://0001-define-macro-_PATH_DHCPD_CONF-and-_PATH_DHCLIENT_CON.pat
             file://0012-dhcp-correct-the-intention-for-xml2-lib-search.patch \
             file://0013-fixup_use_libbind.patch \
             file://0001-workaround-busybox-limitation-in-linux-dhclient-script.patch \
+            file://CVE-2021-25217.patch \
 "
 
 SRC_URI[md5sum] = "2afdaf8498dc1edaf3012efdd589b3e1"