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authorEric Paris <eparis@redhat.com>2007-12-04 23:45:31 -0800
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-12-05 09:21:21 -0800
commitecaf18c15aac8bb9bed7b7aa0e382fe252e275d5 (patch)
treecefce88c3d253992f939c2f8a1b66b8932272cbb /arch/powerpc/configs/mpc834x_itx_defconfig
parent294a80a8ed004b383ab214837e1c05ca4098a717 (diff)
downloadop-kernel-dev-ecaf18c15aac8bb9bed7b7aa0e382fe252e275d5.zip
op-kernel-dev-ecaf18c15aac8bb9bed7b7aa0e382fe252e275d5.tar.gz
VM/Security: add security hook to do_brk
Given a specifically crafted binary do_brk() can be used to get low pages available in userspace virtual memory and can thus be used to circumvent the mmap_min_addr low memory protection. Add security checks in do_brk(). Signed-off-by: Eric Paris <eparis@redhat.com> Acked-by: Alan Cox <alan@redhat.com> Cc: Stephen Smalley <sds@tycho.nsa.gov> Cc: James Morris <jmorris@namei.org> Cc: Chris Wright <chrisw@sous-sol.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'arch/powerpc/configs/mpc834x_itx_defconfig')
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