文件系统的挂载相关的有两个命令： mount 和 umount 其中： mount 用于挂载和 umount 用于取消挂载 ...
https://github.com/maurossi/linux/commit/004fa84ccce9ca35efb17085623b896929659889 mm/shmem.c return simple_xattr_set(&info->xattrs, name, value, size, flags); } +static const struct xattr_handler shmem_user_xattr_handler = { + .prefix = XATTR_USER_PREFIX, + .get = shmem_xattr_handle...
Due to inheritance of Posix ACL information (xattrs) when copying up overlayfs files and not cleaning those additional and unintended ACL attribues, SGID directories may become user writable, thus allowing to gain privileges of this group using methods described in [0]. On standard Ubuntu system...