diff options
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/namei.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/fs/namei.c b/fs/namei.c index ad74877e1442..6fa3e9138fe4 100644 --- a/fs/namei.c +++ b/fs/namei.c @@ -2941,10 +2941,16 @@ static inline int open_to_namei_flags(int flag) static int may_o_create(const struct path *dir, struct dentry *dentry, umode_t mode) { + struct user_namespace *s_user_ns; int error = security_path_mknod(dir, dentry, mode, 0); if (error) return error; + s_user_ns = dir->dentry->d_sb->s_user_ns; + if (!kuid_has_mapping(s_user_ns, current_fsuid()) || + !kgid_has_mapping(s_user_ns, current_fsgid())) + return -EOVERFLOW; + error = inode_permission(dir->dentry->d_inode, MAY_WRITE | MAY_EXEC); if (error) return error; |