linux/arch/m68k
Al Viro ea52b58ccb m68k: Fix stack mangling logics in sigreturn
a) we should hold modifying regs->format until we know we *will* be
doing stack expansion; otherwise attacker can modify sigframe to
have wrong ->sc_formatvec and install SIGSEGV handler.

b) we should *not* mix copying saved extra stuff from userland with
expanding the stack; once we'd done that manual memmove, we'd better
not return to C, so cleanup is very hard to do.  The easiest way
is to copy it on stack first, making sure we won't overwrite on stack
expansion.  Fortunately that's easy to do...

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
2011-01-07 14:01:35 +01:00
..
amiga
apollo
atari
bvme6000
configs
fpsp040
hp300
ifpsp060
include/asm m68k: Switch to saner sigsuspend() 2011-01-07 14:01:33 +01:00
kernel m68k: Fix stack mangling logics in sigreturn 2011-01-07 14:01:35 +01:00
lib
mac Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2010-10-24 13:41:39 -07:00
math-emu
mm
mvme16x
mvme147
q40
sun3
sun3x
tools/amiga
install.sh
Kconfig Merge branch 'kconfig' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild-2.6 2010-10-28 16:16:39 -07:00
Kconfig.debug
Makefile