Jann Horn 5c16a16fcf sys: don't hold uts_sem while accessing userspace memory ... commit 42a0cc3478584d4d63f68f2f5af021ddbea771fa upstream. Holding uts_sem as a writer while accessing userspace memory allows a namespace admin to stall all processes that attempt to take uts_sem. Instead, move data through stack buffers and don't access userspace memory while uts_sem is held. Cc: stable@vger.kernel.org Fixes: 1da177e4c3 ("Linux-2.6.12-rc2") Signed-off-by: Jann Horn <jannh@google.com> Signed-off-by: Eric W. Biederman <ebiederm@xmission.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2018-09-09 20:04:35 +02:00
..
boot	alpha: Fix bootpfile and bootpzfile make targets	2015-05-26 10:01:50 -07:00
include	locking/xchg/alpha: Fix xchg() and cmpxchg() memory ordering bugs	2018-05-30 07:49:01 +02:00
kernel	sys: don't hold uts_sem while accessing userspace memory	2018-09-09 20:04:35 +02:00
lib	alpha: lib: export __delay	2015-09-17 21:16:07 -07:00
math-emu
mm	mm/fault, arch: Use pagefault_disable() to check for disabled pagefaults in the handler	2015-05-19 08:39:15 +02:00
oprofile	alpha: delete non-required instances of <linux/init.h>	2015-05-26 10:01:48 -07:00
defconfig
Kconfig	alpha: select CONFIG_ARCH_USE_CMPXCHG_LOCKREF.	2015-08-30 18:01:16 -07:00
Kconfig.debug
Makefile	alpha: makefile: don't enforce small data model for kernel builds	2013-04-07 12:59:30 -07:00