libcgroup: CVE-2018-14348

Affects libcgroup <= 0.41

(From OE-Core rev: 37101fa37107c498393492ccdbc8652f685b6cce)

Signed-off-by: Jagadeesh Krishnanjanappa <jkrishnanjanappa@mvista.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

2 files changed, 39 insertions, 1 deletions

diff --git a/meta/recipes-core/libcgroup/libcgroup/CVE-2018-14348.patch b/meta/recipes-core/libcgroup/libcgroup/CVE-2018-14348.patch
new file mode 100644
index 0000000000..d133703dec
--- /dev/null
+++ b/meta/recipes-core/libcgroup/libcgroup/CVE-2018-14348.patch
@@ -0,0 +1,37 @@
+From 0d88b73d189ea3440ccaab00418d6469f76fa590 Mon Sep 17 00:00:00 2001
+From: Michal Hocko <mhocko@suse.com>
+Date: Wed, 18 Jul 2018 11:24:29 +0200
+Subject: [PATCH] cgrulesengd: remove umask(0)
+
+One of our partners has noticed that cgred daemon is creating a log file
+(/var/log/cgred) with too wide permissions (0666) and that is seen as
+a security bug because an untrusted user can write to otherwise
+restricted area. CVE-2018-14348 has been assigned to this issue.
+
+CVE: CVE-2018-14348
+Upstream-Status: Backport [https://sourceforge.net/p/libcg/libcg/ci/0d88b73d189ea3440ccaab00418d6469f76fa590]
+
+Signed-off-by: Michal Hocko <mhocko@suse.com>
+Acked-by: Balbir Singh <bsingharora@gmail.com>
+Signed-off-by: Jagadeesh Krishnanjanappa <jkrishnanjanappa@mvista.com>
+---
+ src/daemon/cgrulesengd.c | 3 ---
+ 1 file changed, 3 deletions(-)
+
+diff --git a/src/daemon/cgrulesengd.c b/src/daemon/cgrulesengd.c
+index ea51f11..0d288f3 100644
+--- a/src/daemon/cgrulesengd.c
++++ b/src/daemon/cgrulesengd.c
+@@ -889,9 +889,6 @@ int cgre_start_daemon(const char *logp, const int logf,
+                } else if (pid > 0) {
+                        exit(EXIT_SUCCESS);
+                }
+-
+-               /* Change the file mode mask. */
+-               umask(0);
+        } else {
+                flog(LOG_DEBUG, "Not using daemon mode\n");
+                pid = getpid();
+-- 
+2.13.3
+
diff --git a/meta/recipes-core/libcgroup/libcgroup_0.41.bb b/meta/recipes-core/libcgroup/libcgroup_0.41.bb
index 7ddc81e9b7..92d7261b0d 100644
--- a/meta/recipes-core/libcgroup/libcgroup_0.41.bb
+++ b/meta/recipes-core/libcgroup/libcgroup_0.41.bb
@@ -11,7 +11,8 @@ inherit autotools pkgconfig
 
 DEPENDS = "bison-native flex-native"
 
-SRC_URI = "${SOURCEFORGE_MIRROR}/project/libcg/${BPN}/v0.41/${BPN}-${PV}.tar.bz2"
+SRC_URI = "${SOURCEFORGE_MIRROR}/project/libcg/${BPN}/v0.41/${BPN}-${PV}.tar.bz2 \
+           file://CVE-2018-14348.patch"
 SRC_URI_append_libc-musl = " file://musl-decls-compat.patch"
 
 SRC_URI[md5sum] = "3dea9d50b8a5b73ff0bf1cdcb210f63f"