linux.git/arch/powerpc/kernel/ima_arch.c, branch v5.5 Linux kernel source tree powerpc/ima: Indicate kernel modules appended signatures are enforced 2019-11-12T01:25:50+00:00 Mimi Zohar zohar@linux.ibm.com 2019-10-31T03:31:34+00:00 d72ea4915c7e6fa5e7b9022a34df66e375bfe46c The arch specific kernel module policy rule requires kernel modules to be signed, either as an IMA signature, stored as an xattr, or as an appended signature. As a result, kernel modules appended signatures could be enforced without "sig_enforce" being set or reflected in /sys/module/module/parameters/sig_enforce. This patch sets "sig_enforce". Signed-off-by: Mimi Zohar <zohar@linux.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/1572492694-6520-10-git-send-email-zohar@linux.ibm.com 
The arch specific kernel module policy rule requires kernel modules to
be signed, either as an IMA signature, stored as an xattr, or as an
appended signature. As a result, kernel modules appended signatures
could be enforced without "sig_enforce" being set or reflected in
/sys/module/module/parameters/sig_enforce. This patch sets
"sig_enforce".

Signed-off-by: Mimi Zohar <zohar@linux.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/1572492694-6520-10-git-send-email-zohar@linux.ibm.com
powerpc/ima: Update ima arch policy to check for blacklist 2019-11-12T01:25:50+00:00 Nayna Jain nayna@linux.ibm.com 2019-10-31T03:31:33+00:00 dc87f18615db9dc74a75cfb4a57ed33b07a3903a This patch updates the arch-specific policies for PowerNV system to make sure that the binary hash is not blacklisted. Signed-off-by: Nayna Jain <nayna@linux.ibm.com> Signed-off-by: Mimi Zohar <zohar@linux.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/1572492694-6520-9-git-send-email-zohar@linux.ibm.com 
This patch updates the arch-specific policies for PowerNV system to
make sure that the binary hash is not blacklisted.

Signed-off-by: Nayna Jain <nayna@linux.ibm.com>
Signed-off-by: Mimi Zohar <zohar@linux.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/1572492694-6520-9-git-send-email-zohar@linux.ibm.com
powerpc/ima: Define trusted boot policy 2019-11-12T01:25:50+00:00 Nayna Jain nayna@linux.ibm.com 2019-10-31T03:31:29+00:00 1917855f4e0658c313e280671ad87774dbfb7b24 This patch defines an arch-specific trusted boot only policy and a combined secure and trusted boot policy. Signed-off-by: Nayna Jain <nayna@linux.ibm.com> Signed-off-by: Mimi Zohar <zohar@linux.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/1572492694-6520-5-git-send-email-zohar@linux.ibm.com 
This patch defines an arch-specific trusted boot only policy and a
combined secure and trusted boot policy.

Signed-off-by: Nayna Jain <nayna@linux.ibm.com>
Signed-off-by: Mimi Zohar <zohar@linux.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/1572492694-6520-5-git-send-email-zohar@linux.ibm.com
powerpc/ima: Add support to initialize ima policy rules 2019-11-12T01:25:49+00:00 Nayna Jain nayna@linux.ibm.com 2019-10-31T03:31:27+00:00 4238fad366a660cbc6499ca1ea4be42bd4d1ac5b PowerNV systems use a Linux-based bootloader, which rely on the IMA subsystem to enforce different secure boot modes. Since the verification policy may differ based on the secure boot mode of the system, the policies must be defined at runtime. This patch implements arch-specific support to define IMA policy rules based on the runtime secure boot mode of the system. This patch provides arch-specific IMA policies if PPC_SECURE_BOOT config is enabled. Signed-off-by: Nayna Jain <nayna@linux.ibm.com> Signed-off-by: Mimi Zohar <zohar@linux.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/1572492694-6520-3-git-send-email-zohar@linux.ibm.com 
PowerNV systems use a Linux-based bootloader, which rely on the IMA
subsystem to enforce different secure boot modes. Since the
verification policy may differ based on the secure boot mode of the
system, the policies must be defined at runtime.

This patch implements arch-specific support to define IMA policy rules
based on the runtime secure boot mode of the system.

This patch provides arch-specific IMA policies if PPC_SECURE_BOOT
config is enabled.

Signed-off-by: Nayna Jain <nayna@linux.ibm.com>
Signed-off-by: Mimi Zohar <zohar@linux.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/1572492694-6520-3-git-send-email-zohar@linux.ibm.com