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-rw-r--r--security/selinux/hooks.c10
1 files changed, 7 insertions, 3 deletions
diff --git a/security/selinux/hooks.c b/security/selinux/hooks.c
index e4b953f760dd..e32f4b5f23a5 100644
--- a/security/selinux/hooks.c
+++ b/security/selinux/hooks.c
@@ -834,10 +834,14 @@ static int selinux_set_mnt_opts(struct super_block *sb,
834 } 834 }
835 835
836 /* 836 /*
837 * If this is a user namespace mount, no contexts are allowed 837 * If this is a user namespace mount and the filesystem type is not
838 * on the command line and security labels must be ignored. 838 * explicitly whitelisted, then no contexts are allowed on the command
839 * line and security labels must be ignored.
839 */ 840 */
840 if (sb->s_user_ns != &init_user_ns) { 841 if (sb->s_user_ns != &init_user_ns &&
842 strcmp(sb->s_type->name, "tmpfs") &&
843 strcmp(sb->s_type->name, "ramfs") &&
844 strcmp(sb->s_type->name, "devpts")) {
841 if (context_sid || fscontext_sid || rootcontext_sid || 845 if (context_sid || fscontext_sid || rootcontext_sid ||
842 defcontext_sid) { 846 defcontext_sid) {
843 rc = -EACCES; 847 rc = -EACCES;