* [GIT PULL] usercopy protection for v4.8
@ 2016-07-26 21:55 Kees Cook
2016-07-27 3:53 ` Kees Cook
0 siblings, 1 reply; 3+ messages in thread
From: Kees Cook @ 2016-07-26 21:55 UTC (permalink / raw)
To: Linus Torvalds
Cc: linux-kernel, Laura Abbott, Michael Ellerman, Valdis Kletnieks
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. :)
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
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: [GIT PULL] usercopy protection for v4.8
2016-07-26 21:55 [GIT PULL] usercopy protection for v4.8 Kees Cook
@ 2016-07-27 3:53 ` Kees Cook
2016-07-30 4:36 ` Kees Cook
0 siblings, 1 reply; 3+ messages in thread
From: Kees Cook @ 2016-07-27 3:53 UTC (permalink / raw)
To: Linus Torvalds; +Cc: LKML, Laura Abbott, Michael Ellerman, Valdis Kletnieks
On Tue, Jul 26, 2016 at 2:55 PM, Kees Cook <keescook@chromium.org> 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
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: [GIT PULL] usercopy protection for v4.8
2016-07-27 3:53 ` Kees Cook
@ 2016-07-30 4:36 ` Kees Cook
0 siblings, 0 replies; 3+ messages in thread
From: Kees Cook @ 2016-07-30 4:36 UTC (permalink / raw)
To: Linus Torvalds; +Cc: LKML, Laura Abbott, Michael Ellerman, Valdis Kletnieks
On Tue, Jul 26, 2016 at 8:53 PM, Kees Cook <keescook@chromium.org> wrote:
> On Tue, Jul 26, 2016 at 2:55 PM, Kees Cook <keescook@chromium.org> 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.
Okay, this should be ready to go now. The dependencies in arm and
arm64 have been pulled:
commit 14c4a533e09 ("ARM: 8583/1: mm: fix location of _etext")
commit 9fdc14c55cd6 ("arm64: mm: fix location of _etext")
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
--
Kees Cook
Chrome OS & Brillo Security
^ permalink raw reply [flat|nested] 3+ messages in thread
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