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49 Commits

Author SHA1 Message Date
Patrick Schleizer
1c0e071948
comments 2022-07-05 10:45:55 -04:00
Patrick Schleizer
5d47f5f74c
comments 2022-07-05 10:45:09 -04:00
Patrick Schleizer
435c689cf9
comments 2022-07-05 10:44:28 -04:00
Patrick Schleizer
c20d588d78
comments 2022-07-05 10:42:37 -04:00
Patrick Schleizer
b342ce930e
add /etc/default/grub.d/40_cold_boot_attack_defense.cfg 2022-07-05 10:28:22 -04:00
Patrick Schleizer
67eaf8c916
comments 2022-06-29 11:40:38 -04:00
Patrick Schleizer
72908d6b0d
comments 2022-06-29 11:34:55 -04:00
Patrick Schleizer
2d37e3a1af
copyright 2022-05-20 14:46:38 -04:00
Patrick Schleizer
c72567dbd2
fix 2021-09-14 14:18:44 -04:00
Patrick Schleizer
d62bbaab82
fix, unduplicate kernel command line 2021-09-12 11:40:58 -04:00
Patrick Schleizer
bd31b4085c
remove Debian buster support in /etc/default/grub.d 2021-09-09 12:16:18 -04:00
Patrick Schleizer
ac0c492663
do not set kernel parameter quiet loglevel=0 for recovery boot option 
for easier debugging
 2021-09-06 08:22:55 -04:00
Patrick Schleizer
49902b8c56
move grub quiet to separate config file /etc/default/grub.d/41_quiet.cfg 2021-09-06 08:19:41 -04:00
Patrick Schleizer
db43cedcfd
LANG=C str_replace 2021-08-22 05:23:24 -04:00
Patrick Schleizer
a67007f4b7
copyright 2021-03-17 09:45:21 -04:00
madaidan
06ffd5d220
Restrict access to debugfs 2020-09-28 19:21:20 +00:00
Patrick Schleizer
6485df8126
Prevent kernel info leaks in console during boot. 
add kernel parameter `quiet loglevel=0`

https://phabricator.whonix.org/T950
 2020-04-23 12:26:31 -04:00
Patrick Schleizer
72228946dc
fix etc/default/grub.d/40_kernel_hardening.cfg 
in Qubes if no kernel package is installed
 2020-04-08 16:46:11 +00:00
Patrick Schleizer
2ceea8d1fe
update copyright year 2020-04-01 08:49:59 -04:00
madaidan
f6b6ab374e
Gather more entropy during boot 2020-02-16 19:51:32 +00:00
madaidan
9b767139ef
Avoid holes in IOMMU 2020-02-14 18:52:01 +00:00
madaidan
700c7ed908
Create 40_cpu_mitigations.cfg 2020-02-12 18:42:13 +00:00
madaidan
ba0043b8a7
Update 40_kernel_hardening.cfg 2020-02-12 18:36:05 +00:00
HulaHoop0
e4c6e897cf
kvm.nx_huge_pages=force 2020-02-03 16:06:46 +00:00
Patrick Schleizer
b9d65338bc
unconditionally enable all CPU bugs (spectre, meltdown, L1TF, ...) 
this might reduce performance

* `spectre_v2=on`
* `spec_store_bypass_disable=on`
* `tsx=off`
* `tsx_async_abort=full,nosmt`

Thanks to @madaidan for the suggestion!

https://forums.whonix.org/t/should-all-kernel-patches-for-cpu-bugs-be-unconditionally-enabled-vs-performance-vs-applicability/7647
 2020-01-30 05:55:13 -05:00
Patrick Schleizer
c1a0da60be
set kernel boot parameter l1tf=full,force and nosmt=force 
https://forums.whonix.org/t/should-all-kernel-patches-for-cpu-bugs-be-unconditionally-enabled-vs-performance-vs-applicability/7647/17
 2020-01-30 00:46:48 -05:00
Patrick Schleizer
ede536913d
no longer hardcode amd64 2019-12-24 06:00:41 -05:00
Patrick Schleizer
ac49c55d1f
Merge pull request #49 from madaidan/kver 
Detect kernel upgrades
 2019-12-24 10:55:03 +00:00
madaidan
98e88d1456
Detect kernel upgrades 2019-12-23 19:57:43 +00:00
madaidan
d1a0650fd9
Use only one slub_debug parameter 2019-12-23 19:44:52 +00:00
Patrick Schleizer
3e131174d5
comments 2019-12-23 05:00:35 -05:00
Patrick Schleizer
9f072ce4f9
comment 2019-12-23 03:46:02 -05:00
Patrick Schleizer
26fe9394ff
disable lockdown for now due to module loading 2019-12-23 03:41:54 -05:00
madaidan
535c258b83
More kernel hardening 2019-12-23 03:35:07 -05:00
Patrick Schleizer
0c25a96b59
description / comments 2019-12-03 02:18:32 -05:00
madaidan
5da2a27bf0
Distrust the CPU for initial entropy 2019-12-02 16:43:00 +00:00
Patrick Schleizer
94d40c68d4
do not set kernel boot parameter page_poison=1 in Qubes since does not work 
https://github.com/QubesOS/qubes-issues/issues/5212#issuecomment-533873012
 2019-11-05 10:02:55 -05:00
Patrick Schleizer
f57702c158
comments; copyright 2019-11-05 09:55:43 -05:00
madaidan
60db7e6294
fix typo 2019-09-07 20:08:56 +00:00
Patrick Schleizer
661bcd8603
allow loading unsigned modules due to issues 
https://forums.whonix.org/t/allow-loading-signed-kernel-modules-by-default-disallow-kernel-module-loading-by-default/7880/23
 2019-09-07 05:39:56 +00:00
Patrick Schleizer
cb8170fd80
comment 2019-09-06 11:44:56 +00:00
madaidan
9a49b8ecbb
Create 40_only_allow_signed_modules.cfg 
Require all loaded kernel modules to be signed with a valid key.
 2019-08-13 13:33:07 +00:00
Patrick Schleizer
7e12e16dc0
Merge pull request #11 from madaidan/patch-7 
Protect against DMA attacks
 2019-06-28 06:57:42 +00:00
Patrick Schleizer
2a6289980e
syntax fix 
GRUB_CMDLINE_LINUX="$GRUB_CMDLINE_LINUX mds=full,nosmt"

https://forums.whonix.org/t/kernel-hardening/7296/70
 2019-06-23 18:46:52 +00:00
madaidan
641407c8e9
Enable IOMMU 2019-06-23 18:38:50 +00:00
madaidan
2178fb37a8
Add more kernel hardening parameters 2019-06-23 17:54:34 +00:00
Patrick Schleizer
f917c27a19
remove trailing spaces 2019-05-06 05:51:14 -04:00
madaidan
02e8888b0b
Update 40_kernel_hardening.cfg 2019-05-05 20:17:33 +00:00
madaidan
3695d7491e
Create 40_kernel_hardening.cfg 2019-05-05 14:42:03 +00:00