Messages in this thread | | | Date | Tue, 27 Nov 2007 11:38:24 +1100 (EST) | From | James Morris <> | Subject | Re: [PATCH 3/3-v2] security: allow capable check to permit mmap or low vm space |
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On Mon, 26 Nov 2007, Eric Paris wrote:
> On a kernel with CONFIG_SECURITY but without an LSM which implements > security_file_mmap it is impossible for an application to mmap addresses > lower than mmap_min_addr. Based on a suggestion from a developer in the > openwall community this patch adds a check for CAP_SYS_RAWIO. It is > assumed that any process with this capability can harm the system a lot > more easily than writing some stuff on the zero page and then trying to > get the kernel to trip over itself. It also means that programs like X > on i686 which use vm86 emulation can work even with mmap_min_addr set. > > Signed-off-by: Eric Paris <eparis@redhat.com>
Applied to git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/selinux-2.6.git#for-akpm
If nobody hollers, I'll push it to Linus when the next merge window opens.
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