On Tue, Jul 26, 2016 at 2:55 PM, Kees Cook <[email protected]> wrote: > Hi, > > This is my next pull request for v4.8, which introduces a kernel self > protection of copy_to_user/copy_from_user that has been under review and > test on the kernel-hardening list for a while. It has lived for a bit > in -next, and appears to be ready IMO. There will be more improvements > in the future, but this is a solid start. > > Again, if I can improve these pull request emails in any way, please > let me know. :)
Hrm, part of the complexity of the KSPP work: this series depends on _etext fixes in the arm and arm64 trees, so this should likely wait until those trees are pulled. -Kees > > Thanks! > > -Kees > > The following changes since commit 523d939ef98fd712632d93a5a2b588e477a7565e: > > Linux 4.7 (2016-07-24 12:23:50 -0700) > > are available in the git repository at: > > git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux.git > tags/usercopy-v4.8 > > for you to fetch changes up to ed18adc1cdd00a5c55a20fbdaed4804660772281: > > mm: SLUB hardened usercopy support (2016-07-26 14:43:54 -0700) > > ---------------------------------------------------------------- > Implements HARDENED_USERCOPY verification of copy_to_user/copy_from_user > bounds checking for most architectures on SLAB and SLUB. > > ---------------------------------------------------------------- > Kees Cook (11): > mm: Implement stack frame object validation > mm: Hardened usercopy > x86/uaccess: Enable hardened usercopy > ARM: uaccess: Enable hardened usercopy > arm64/uaccess: Enable hardened usercopy > ia64/uaccess: Enable hardened usercopy > powerpc/uaccess: Enable hardened usercopy > sparc/uaccess: Enable hardened usercopy > s390/uaccess: Enable hardened usercopy > mm: SLAB hardened usercopy support > mm: SLUB hardened usercopy support > > Laura Abbott (1): > mm: Add is_migrate_cma_page > > arch/Kconfig | 9 ++ > arch/arm/Kconfig | 1 + > arch/arm/include/asm/uaccess.h | 11 +- > arch/arm64/Kconfig | 1 + > arch/arm64/include/asm/uaccess.h | 29 +++- > arch/arm64/kernel/arm64ksyms.c | 4 +- > arch/arm64/lib/copy_from_user.S | 4 +- > arch/arm64/lib/copy_to_user.S | 4 +- > arch/ia64/Kconfig | 1 + > arch/ia64/include/asm/uaccess.h | 18 ++- > arch/powerpc/Kconfig | 1 + > arch/powerpc/include/asm/uaccess.h | 21 ++- > arch/s390/Kconfig | 1 + > arch/s390/lib/uaccess.c | 2 + > arch/sparc/Kconfig | 1 + > arch/sparc/include/asm/uaccess_32.h | 14 +- > arch/sparc/include/asm/uaccess_64.h | 11 +- > arch/x86/Kconfig | 2 + > arch/x86/include/asm/thread_info.h | 44 ++++++ > arch/x86/include/asm/uaccess.h | 10 +- > arch/x86/include/asm/uaccess_32.h | 2 + > arch/x86/include/asm/uaccess_64.h | 2 + > include/linux/mmzone.h | 2 + > include/linux/slab.h | 12 ++ > include/linux/thread_info.h | 24 ++++ > init/Kconfig | 2 + > mm/Makefile | 4 + > mm/slab.c | 30 ++++ > mm/slub.c | 40 ++++++ > mm/usercopy.c | 268 > ++++++++++++++++++++++++++++++++++++ > security/Kconfig | 28 ++++ > 31 files changed, 573 insertions(+), 30 deletions(-) > create mode 100644 mm/usercopy.c > > -- > Kees Cook > Brillo & Chrome OS Security -- Kees Cook Chrome OS & Brillo Security
