Update KSPP recommendations

kconfig_hardened_check/config_files/kspp-recommendations/kspp-recommendations-arm.config

@@ -80,6 +80,9 @@ CONFIG_REFCOUNT_FULL=y
 # Check for memory copies that might overflow a structure in str*() and mem*() functions both at build-time and run-time.
 CONFIG_FORTIFY_SOURCE=y
 
+# Avoid kernel memory address exposures via dmesg (sets sysctl kernel.dmesg_restrict initial value to 1)
+CONFIG_SECURITY_DMESG_RESTRICT=y
+
 # Dangerous; enabling this allows direct physical memory writing.
 # CONFIG_ACPI_CUSTOM_METHOD is not set
 

kconfig_hardened_check/config_files/kspp-recommendations/kspp-recommendations-arm64.config

@@ -80,6 +80,9 @@ CONFIG_REFCOUNT_FULL=y
 # Check for memory copies that might overflow a structure in str*() and mem*() functions both at build-time and run-time.
 CONFIG_FORTIFY_SOURCE=y
 
+# Avoid kernel memory address exposures via dmesg (sets sysctl kernel.dmesg_restrict initial value to 1)
+CONFIG_SECURITY_DMESG_RESTRICT=y
+
 # Dangerous; enabling this allows direct physical memory writing.
 # CONFIG_ACPI_CUSTOM_METHOD is not set
 

kconfig_hardened_check/config_files/kspp-recommendations/kspp-recommendations-x86-32.config

@@ -80,6 +80,9 @@ CONFIG_REFCOUNT_FULL=y
 # Check for memory copies that might overflow a structure in str*() and mem*() functions both at build-time and run-time.
 CONFIG_FORTIFY_SOURCE=y
 
+# Avoid kernel memory address exposures via dmesg (sets sysctl kernel.dmesg_restrict initial value to 1)
+CONFIG_SECURITY_DMESG_RESTRICT=y
+
 # Dangerous; enabling this allows direct physical memory writing.
 # CONFIG_ACPI_CUSTOM_METHOD is not set
 
@@ -162,6 +165,9 @@ CONFIG_X86_PAE=y
 # Disallow allocating the first 64k of memory.
 CONFIG_DEFAULT_MMAP_MIN_ADDR=65536
 
+# Disable Model-Specific Register writes.
+# CONFIG_X86_MSR is not set
+
 # Randomize position of kernel.
 CONFIG_RANDOMIZE_BASE=y
 

kconfig_hardened_check/config_files/kspp-recommendations/kspp-recommendations-x86-64.config

@@ -80,6 +80,9 @@ CONFIG_REFCOUNT_FULL=y
 # Check for memory copies that might overflow a structure in str*() and mem*() functions both at build-time and run-time.
 CONFIG_FORTIFY_SOURCE=y
 
+# Avoid kernel memory address exposures via dmesg (sets sysctl kernel.dmesg_restrict initial value to 1)
+CONFIG_SECURITY_DMESG_RESTRICT=y
+
 # Dangerous; enabling this allows direct physical memory writing.
 # CONFIG_ACPI_CUSTOM_METHOD is not set
 
@@ -157,6 +160,9 @@ CONFIG_X86_64=y
 # Disallow allocating the first 64k of memory.
 CONFIG_DEFAULT_MMAP_MIN_ADDR=65536
 
+# Disable Model-Specific Register writes.
+# CONFIG_X86_MSR is not set
+
 # Randomize position of kernel and memory.
 CONFIG_RANDOMIZE_BASE=y
 CONFIG_RANDOMIZE_MEMORY=y