Helge Deller 7961981718 parisc: Fix kernel panic due invalid values in IAOQ0 or IAOQ1 ... commit 10835c8546 upstream. On parisc the privilege level of a process is stored in the lowest two bits of the instruction pointers (IAOQ0 and IAOQ1). On Linux we use privilege level 0 for the kernel and privilege level 3 for user-space. So userspace should not be allowed to modify IAOQ0 or IAOQ1 of a ptraced process to change it's privilege level to e.g. 0 to try to gain kernel privileges. This patch prevents such modifications by always setting the two lowest bits to one (which relates to privilege level 3 for user-space) if IAOQ0 or IAOQ1 are modified via ptrace calls in the native and compat ptrace paths. Link: https://bugs.gentoo.org/481768 Reported-by: Jeroen Roovers <jer@gentoo.org> Cc: <stable@vger.kernel.org> Tested-by: Rolf Eike Beer <eike-kernel@sf-tec.de> Signed-off-by: Helge Deller <deller@gmx.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2019-07-26 09:14:29 +02:00
..
boot	parisc: Use PA_ASM_LEVEL in boot code	2019-05-25 18:23:23 +02:00
configs
include	parisc: Rename LEVEL to PA_ASM_LEVEL to avoid name clash with DRBD code	2019-05-25 18:23:24 +02:00
kernel	parisc: Fix kernel panic due invalid values in IAOQ0 or IAOQ1	2019-07-26 09:14:29 +02:00
lib	parisc: Fix and improve kernel stack unwinding	2018-08-13 09:54:17 +02:00
math-emu	parisc: Fix compiler warnings in float emulation code	2019-06-25 11:35:55 +08:00
mm	parisc: Fix map_pages() to not overwrite existing pte entries	2018-11-13 11:08:18 -08:00
oprofile
defpalo.conf
install.sh
Kconfig	Consolidation of Kconfig files by Christoph Hellwig.	2018-08-15 13:05:12 -07:00
Kconfig.debug	Kconfig: consolidate the "Kernel hacking" menu	2018-08-02 08:06:48 +09:00
Makefile	parisc: Enable -ffunction-sections for modules on 32-bit kernel	2018-12-13 09:16:18 +01:00
nm