Re: [PATCH V40 04/29] lockdown: Enforce module signatures if the kernel is locked down

From: David Howells <dhowells@redhat.com>
Date: 2019-08-30 16:31:17
Also in: linux-security-module, lkml
Reply to: Matthew Garrett, 2019-08-20

Matthew Garrett [off-list ref] wrote:

quoted hunk ↗ jump to hunk

 enum lockdown_reason {
 	LOCKDOWN_NONE,
+	LOCKDOWN_MODULE_SIGNATURE,
 	LOCKDOWN_INTEGRITY_MAX,
 	LOCKDOWN_CONFIDENTIALITY_MAX,
 };

Aren't you mixing disjoint sets?

+	[LOCKDOWN_MODULE_SIGNATURE] = "unsigned module loading",

Wouldn't it be better to pass this string as a parameter to
security_locked_down()?

David

Matthew Garrett · 2019-08-20
[PATCH V40 01/29] security: Support early LSMs · Matthew Garrett · 2019-08-20
[PATCH V40 02/29] security: Add a "locked down" LSM hook · Matthew Garrett · 2019-08-20
[PATCH V40 04/29] lockdown: Enforce module signatures if the kernel is locked down · Matthew Garrett · 2019-08-20
Re: [PATCH V40 04/29] lockdown: Enforce module signatures if the kernel is locked down · David Howells · 2019-08-30
Re: [PATCH V40 04/29] lockdown: Enforce module signatures if the kernel is locked down · Matthew Garrett · 2019-09-04
[PATCH V40 05/29] lockdown: Restrict /dev/{mem,kmem,port} when the kernel is locked down · Matthew Garrett · 2019-08-20
[PATCH V40 06/29] kexec_load: Disable at runtime if the kernel is locked down · Matthew Garrett · 2019-08-20
[PATCH V40 07/29] lockdown: Copy secure_boot flag in boot params across kexec reboot · Matthew Garrett · 2019-08-20
[PATCH V40 08/29] kexec_file: split KEXEC_VERIFY_SIG into KEXEC_SIG and KEXEC_SIG_FORCE · Matthew Garrett · 2019-08-20
Re: [PATCH V40 08/29] kexec_file: split KEXEC_VERIFY_SIG into KEXEC_SIG and KEXEC_SIG_FORCE · Philipp Rudo · 2019-08-30
[PATCH V40 09/29] kexec_file: Restrict at runtime if the kernel is locked down · Matthew Garrett · 2019-08-20
[PATCH V40 10/29] hibernate: Disable when the kernel is locked down · Matthew Garrett · 2019-08-20
Re: [PATCH V40 10/29] hibernate: Disable when the kernel is locked down · Rafael J. Wysocki · 2019-08-20
Re: [PATCH V40 10/29] hibernate: Disable when the kernel is locked down · Pavel Machek · 2019-08-25
[PATCH V40 12/29] x86: Lock down IO port access when the kernel is locked down · Matthew Garrett · 2019-08-20
Re: [PATCH V40 12/29] x86: Lock down IO port access when the kernel is locked down · Kai-Heng Feng · 2022-01-05
Re: [PATCH V40 12/29] x86: Lock down IO port access when the kernel is locked down · Matthew Garrett · 2022-01-05
Re: [PATCH V40 12/29] x86: Lock down IO port access when the kernel is locked down · Kai-Heng Feng · 2022-01-05
Re: [PATCH V40 12/29] x86: Lock down IO port access when the kernel is locked down · Matthew Garrett · 2022-01-05
Re: [PATCH V40 12/29] x86: Lock down IO port access when the kernel is locked down · Kai-Heng Feng · 2022-01-05
Re: [PATCH V40 12/29] x86: Lock down IO port access when the kernel is locked down · Matthew Garrett · 2022-01-05
[PATCH V40 11/29] PCI: Lock down BAR access when the kernel is locked down · Matthew Garrett · 2019-08-20
Re: [PATCH V40 11/29] PCI: Lock down BAR access when the kernel is locked down · Bjorn Helgaas · 2019-08-20
Re: [PATCH V40 11/29] PCI: Lock down BAR access when the kernel is locked down · Matthew Garrett · 2019-08-20
[PATCH V40 13/29] x86/msr: Restrict MSR access when the kernel is locked down · Matthew Garrett · 2019-08-20
[PATCH V40 16/29] acpi: Disable ACPI table override if the kernel is locked down · Matthew Garrett · 2019-08-20
Re: [PATCH V40 16/29] acpi: Disable ACPI table override if the kernel is locked down · Rafael J. Wysocki · 2019-08-20
[PATCH V40 17/29] lockdown: Prohibit PCMCIA CIS storage when the kernel is locked down · Matthew Garrett · 2019-08-20
[PATCH V40 18/29] lockdown: Lock down TIOCSSERIAL · Matthew Garrett · 2019-08-20
[PATCH V40 19/29] lockdown: Lock down module params that specify hardware parameters (eg. ioport) · Matthew Garrett · 2019-08-20
Re: [PATCH V40 19/29] lockdown: Lock down module params that specify hardware parameters (eg. ioport) · Jessica Yu · 2019-08-20
[PATCH V40 21/29] lockdown: Lock down /proc/kcore · Matthew Garrett · 2019-08-20
[PATCH V40 22/29] lockdown: Lock down tracing and perf kprobes when in confidentiality mode · Matthew Garrett · 2019-08-20
[PATCH V40 24/29] lockdown: Lock down perf when in confidentiality mode · Matthew Garrett · 2019-08-20
[PATCH V40 25/29] kexec: Allow kexec_file() with appropriate IMA policy when locked down · Matthew Garrett · 2019-08-20
[PATCH V40 26/29] debugfs: Restrict debugfs when the kernel is locked down · Matthew Garrett · 2019-08-20
[PATCH V40 28/29] efi: Restrict efivar_ssdt_load when the kernel is locked down · Matthew Garrett · 2019-08-20
[PATCH V40 29/29] lockdown: Print current->comm in restriction messages · Matthew Garrett · 2019-08-20
[PATCH V40 27/29] tracefs: Restrict tracefs when the kernel is locked down · Matthew Garrett · 2019-08-20
[PATCH V40 23/29] bpf: Restrict bpf when kernel lockdown is in confidentiality mode · Matthew Garrett · 2019-08-20
Re: [PATCH V40 23/29] bpf: Restrict bpf when kernel lockdown is in confidentiality mode · David Howells · 2019-08-30
[PATCH V40 20/29] x86/mmiotrace: Lock down the testmmiotrace module · Matthew Garrett · 2019-08-20
[PATCH V40 15/29] acpi: Ignore acpi_rsdp kernel param when the kernel has been locked down · Matthew Garrett · 2019-08-20
Re: [PATCH V40 15/29] acpi: Ignore acpi_rsdp kernel param when the kernel has been locked down · Rafael J. Wysocki · 2019-08-20
[PATCH V40 14/29] ACPI: Limit access to custom_method when the kernel is locked down · Matthew Garrett · 2019-08-20
Re: [PATCH V40 14/29] ACPI: Limit access to custom_method when the kernel is locked down · Rafael J. Wysocki · 2019-08-20
[PATCH V40 03/29] security: Add a static lockdown policy LSM · Matthew Garrett · 2019-08-20
Re: [PATCH V40 03/29] security: Add a static lockdown policy LSM · David Howells · 2019-08-30
Re: [PATCH V40 03/29] security: Add a static lockdown policy LSM · Matthew Garrett · 2019-09-04
Re: [PATCH V40 03/29] security: Add a static lockdown policy LSM · Matthew Garrett · 2019-09-10
James Morris · 2019-08-20
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