Thu May 31 16:24:59 UTC 2012

1 files changed, 31 insertions, 0 deletions

diff --git a/libre/systemd/0001-util-never-follow-symlinks-in-rm_rf_children.patch b/libre/systemd/0001-util-never-follow-symlinks-in-rm_rf_children.patch
new file mode 100644
index 000000000..9bf84dda6
--- /dev/null
+++ b/libre/systemd/0001-util-never-follow-symlinks-in-rm_rf_children.patch
@@ -0,0 +1,31 @@
+From 5ebff5337594d690b322078c512eb222d34aaa82 Mon Sep 17 00:00:00 2001
+From: Michal Schmidt <mschmidt@redhat.com>
+Date: Fri, 2 Mar 2012 10:39:10 +0100
+Subject: [PATCH] util: never follow symlinks in rm_rf_children()
+
+The function checks if the entry is a directory before recursing, but
+there is a window between the check and the open, during which the
+directory could be replaced with a symlink.
+
+CVE-2012-1174
+https://bugzilla.redhat.com/show_bug.cgi?id=803358
+---
+ src/util.c |    3 ++-
+ 1 file changed, 2 insertions(+), 1 deletion(-)
+
+diff --git a/src/util.c b/src/util.c
+index 20cbc2b..dfc1dc6 100644
+--- a/src/util.c
++++ b/src/util.c
+@@ -3593,7 +3593,8 @@ static int rm_rf_children(int fd, bool only_dirs, bool honour_sticky) {
+                 if (is_dir) {
+                         int subdir_fd;
+
+-                        if ((subdir_fd = openat(fd, de->d_name, O_RDONLY|O_NONBLOCK|O_DIRECTORY|O_CLOEXEC)) < 0) {
++                        subdir_fd = openat(fd, de->d_name, O_RDONLY|O_NONBLOCK|O_DIRECTORY|O_CLOEXEC|O_NOFOLLOW);
++                        if (subdir_fd < 0) {
+                                 if (ret == 0 && errno != ENOENT)
+                                         ret = -errno;
+                                 continue;
+--
+1.7.9.4