[PATCH] security: inode: fix a missing check for securityfs_create_file
From: Kangjie Lu <hidden>
Date: 2019-03-15 04:09:11
Also in:
lkml
Subsystem:
security subsystem, the rest · Maintainers:
Paul Moore, James Morris, "Serge E. Hallyn", Linus Torvalds
securityfs_create_file may fail. The fix checks its status and returns EFAULT upstream if it fails. Signed-off-by: Kangjie Lu <redacted> --- security/inode.c | 5 +++++ 1 file changed, 5 insertions(+)
diff --git a/security/inode.c b/security/inode.c
index b7772a9b315e..11d9a6bc2161 100644
--- a/security/inode.c
+++ b/security/inode.c@@ -339,6 +339,11 @@ static int __init securityfs_init(void) #ifdef CONFIG_SECURITY lsm_dentry = securityfs_create_file("lsm", 0444, NULL, NULL, &lsm_ops); + if (IS_ERR(lsm_dentry)) { + unregister_filesystem(&fs_type); + sysfs_remove_mount_point(kernel_kobj, "security"); + return -EFAULT; + } #endif return 0; }
--
2.17.1