diff options
| -rw-r--r-- | kernel.spec | 2 | ||||
| -rw-r--r-- | s390-Lock-down-the-kernel-when-the-IPL-secure-flag-i.patch | 66 |
2 files changed, 68 insertions, 0 deletions
diff --git a/kernel.spec b/kernel.spec index a33925077..fe4163860 100644 --- a/kernel.spec +++ b/kernel.spec @@ -802,6 +802,8 @@ Patch204: efi-secureboot.patch Patch205: lift-lockdown-sysrq.patch +Patch206: s390-Lock-down-the-kernel-when-the-IPL-secure-flag-i.patch + # 300 - ARM patches Patch300: arm64-Add-option-of-13-for-FORCE_MAX_ZONEORDER.patch diff --git a/s390-Lock-down-the-kernel-when-the-IPL-secure-flag-i.patch b/s390-Lock-down-the-kernel-when-the-IPL-secure-flag-i.patch new file mode 100644 index 000000000..0779418b4 --- /dev/null +++ b/s390-Lock-down-the-kernel-when-the-IPL-secure-flag-i.patch @@ -0,0 +1,66 @@ +From eaa12998810bd9db85dec71f0da55fd5aae73d0f Mon Sep 17 00:00:00 2001 +From: Jeremy Cline <jcline@redhat.com> +Date: Wed, 30 Oct 2019 14:37:49 +0000 +Subject: [PATCH] s390: Lock down the kernel when the IPL secure flag is set + +Automatically lock down the kernel to LOCKDOWN_CONFIDENTIALITY_MAX if +the IPL secure flag is set. + +Suggested-by: Philipp Rudo <prudo@redhat.com> +Signed-off-by: Jeremy Cline <jcline@redhat.com> +--- + arch/s390/include/asm/ipl.h | 1 + + arch/s390/kernel/ipl.c | 5 +++++ + arch/s390/kernel/setup.c | 4 ++++ + 3 files changed, 10 insertions(+) + +diff --git a/arch/s390/include/asm/ipl.h b/arch/s390/include/asm/ipl.h +index 084e71b7272a..1d1b5ec7357b 100644 +--- a/arch/s390/include/asm/ipl.h ++++ b/arch/s390/include/asm/ipl.h +@@ -109,6 +109,7 @@ int ipl_report_add_component(struct ipl_report *report, struct kexec_buf *kbuf, + unsigned char flags, unsigned short cert); + int ipl_report_add_certificate(struct ipl_report *report, void *key, + unsigned long addr, unsigned long len); ++bool ipl_get_secureboot(void); + + /* + * DIAG 308 support +diff --git a/arch/s390/kernel/ipl.c b/arch/s390/kernel/ipl.c +index 6837affc19e8..2d3f3d00e05c 100644 +--- a/arch/s390/kernel/ipl.c ++++ b/arch/s390/kernel/ipl.c +@@ -1842,3 +1842,8 @@ int ipl_report_free(struct ipl_report *report) + } + + #endif ++ ++bool ipl_get_secureboot(void) ++{ ++ return !!ipl_secure_flag; ++} +diff --git a/arch/s390/kernel/setup.c b/arch/s390/kernel/setup.c +index 9cbf490fd162..0510ecdfc3f6 100644 +--- a/arch/s390/kernel/setup.c ++++ b/arch/s390/kernel/setup.c +@@ -49,6 +49,7 @@ + #include <linux/memory.h> + #include <linux/compat.h> + #include <linux/start_kernel.h> ++#include <linux/security.h> + + #include <asm/boot_data.h> + #include <asm/ipl.h> +@@ -1096,6 +1097,9 @@ void __init setup_arch(char **cmdline_p) + + log_component_list(); + ++ if (ipl_get_secureboot()) ++ security_lock_kernel_down("Secure IPL mode", LOCKDOWN_CONFIDENTIALITY_MAX); ++ + /* Have one command line that is parsed and saved in /proc/cmdline */ + /* boot_command_line has been already set up in early.c */ + *cmdline_p = boot_command_line; +-- +2.24.1 + |