From: "Peter Müller" <peter.mueller@ipfire.org>
To: development@lists.ipfire.org
Subject: [PATCH 01/11] Kernel: Set CONFIG_ARCH_MMAP_RND_BITS to 32 bits
Date: Sat, 19 Mar 2022 21:08:32 +0000 [thread overview]
Message-ID: <cb505ff6-5140-94ea-33ef-e2745a8d9629@ipfire.org> (raw)
In-Reply-To: <771528ff-9bb0-2073-4819-471ab16bb920@ipfire.org>
[-- Attachment #1: Type: text/plain, Size: 2672 bytes --]
This follows a recommendation by ClipOS, making ASLR bypassing attempts
harder.
Signed-off-by: Peter Müller <peter.mueller(a)ipfire.org>
---
config/kernel/kernel.config.aarch64-ipfire | 2 +-
config/kernel/kernel.config.armv6l-ipfire | 2 +-
config/kernel/kernel.config.riscv64-ipfire | 2 +-
config/kernel/kernel.config.x86_64-ipfire | 2 +-
4 files changed, 4 insertions(+), 4 deletions(-)
diff --git a/config/kernel/kernel.config.aarch64-ipfire b/config/kernel/kernel.config.aarch64-ipfire
index 6728fa7f3..4205aa5bc 100644
--- a/config/kernel/kernel.config.aarch64-ipfire
+++ b/config/kernel/kernel.config.aarch64-ipfire
@@ -702,7 +702,7 @@ CONFIG_HAVE_MOD_ARCH_SPECIFIC=y
CONFIG_MODULES_USE_ELF_RELA=y
CONFIG_ARCH_HAS_ELF_RANDOMIZE=y
CONFIG_HAVE_ARCH_MMAP_RND_BITS=y
-CONFIG_ARCH_MMAP_RND_BITS=18
+CONFIG_ARCH_MMAP_RND_BITS=32
CONFIG_HAVE_ARCH_MMAP_RND_COMPAT_BITS=y
CONFIG_ARCH_MMAP_RND_COMPAT_BITS=11
CONFIG_ARCH_WANT_DEFAULT_TOPDOWN_MMAP_LAYOUT=y
diff --git a/config/kernel/kernel.config.armv6l-ipfire b/config/kernel/kernel.config.armv6l-ipfire
index d8482de92..ef36b8e22 100644
--- a/config/kernel/kernel.config.armv6l-ipfire
+++ b/config/kernel/kernel.config.armv6l-ipfire
@@ -778,7 +778,7 @@ CONFIG_MODULES_USE_ELF_REL=y
CONFIG_ARCH_HAS_ELF_RANDOMIZE=y
CONFIG_HAVE_ARCH_MMAP_RND_BITS=y
CONFIG_HAVE_EXIT_THREAD=y
-CONFIG_ARCH_MMAP_RND_BITS=8
+CONFIG_ARCH_MMAP_RND_BITS=32
CONFIG_ARCH_WANT_DEFAULT_TOPDOWN_MMAP_LAYOUT=y
CONFIG_CLONE_BACKWARDS=y
CONFIG_OLD_SIGSUSPEND3=y
diff --git a/config/kernel/kernel.config.riscv64-ipfire b/config/kernel/kernel.config.riscv64-ipfire
index 73911b2ab..d8045c15c 100644
--- a/config/kernel/kernel.config.riscv64-ipfire
+++ b/config/kernel/kernel.config.riscv64-ipfire
@@ -388,7 +388,7 @@ CONFIG_HAVE_MOD_ARCH_SPECIFIC=y
CONFIG_MODULES_USE_ELF_RELA=y
CONFIG_ARCH_HAS_ELF_RANDOMIZE=y
CONFIG_HAVE_ARCH_MMAP_RND_BITS=y
-CONFIG_ARCH_MMAP_RND_BITS=18
+CONFIG_ARCH_MMAP_RND_BITS=32
CONFIG_ARCH_WANT_DEFAULT_TOPDOWN_MMAP_LAYOUT=y
CONFIG_CLONE_BACKWARDS=y
CONFIG_COMPAT_32BIT_TIME=y
diff --git a/config/kernel/kernel.config.x86_64-ipfire b/config/kernel/kernel.config.x86_64-ipfire
index 0f322826e..b14815545 100644
--- a/config/kernel/kernel.config.x86_64-ipfire
+++ b/config/kernel/kernel.config.x86_64-ipfire
@@ -742,7 +742,7 @@ CONFIG_HAVE_SOFTIRQ_ON_OWN_STACK=y
CONFIG_ARCH_HAS_ELF_RANDOMIZE=y
CONFIG_HAVE_ARCH_MMAP_RND_BITS=y
CONFIG_HAVE_EXIT_THREAD=y
-CONFIG_ARCH_MMAP_RND_BITS=28
+CONFIG_ARCH_MMAP_RND_BITS=32
CONFIG_HAVE_ARCH_MMAP_RND_COMPAT_BITS=y
CONFIG_ARCH_MMAP_RND_COMPAT_BITS=8
CONFIG_HAVE_ARCH_COMPAT_MMAP_BASES=y
--
2.34.1
next prev parent reply other threads:[~2022-03-19 21:08 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-03-19 21:08 [PATCH 00/11] Kernel: Improve hardening Peter Müller
2022-03-19 21:08 ` Peter Müller [this message]
2022-03-23 11:42 ` [PATCH 01/11] Kernel: Set CONFIG_ARCH_MMAP_RND_BITS to 32 bits Michael Tremer
2022-03-19 21:08 ` [PATCH 02/11] Kernel: Disable support for tracing block I/O actions Peter Müller
2022-03-23 11:44 ` Michael Tremer
2022-03-19 21:09 ` [PATCH 03/11] Kernel: Pin loading kernel files to one filesystem Peter Müller
2022-03-21 17:15 ` Arne Fitzenreiter
2022-03-21 18:50 ` Michael Tremer
2022-03-21 20:24 ` alf
2022-03-22 11:17 ` Michael Tremer
2022-03-19 21:09 ` [PATCH 04/11] Kernel: Enable undefined behaviour sanity checker Peter Müller
2022-03-23 11:45 ` Michael Tremer
2022-03-19 21:09 ` [PATCH 05/11] Kernel: Gate SETID transitions to limit CAP_SET(G|U)ID capabilities Peter Müller
2022-03-23 11:46 ` Michael Tremer
2022-03-19 21:10 ` [PATCH 06/11] Kernel: Enable LSM support and set security level to "integrity" Peter Müller
2022-03-23 17:50 ` Michael Tremer
2022-03-19 21:10 ` [PATCH 07/11] Kernel: Trigger BUG if data corruption is detected Peter Müller
2022-03-23 17:53 ` Michael Tremer
2022-03-19 21:10 ` [PATCH 08/11] Kernel: Do not automatically load TTY line disciplines, only if necessary Peter Müller
2022-03-23 17:54 ` Michael Tremer
2022-03-19 21:10 ` [PATCH 09/11] Kernel: Enable SVA support for both Intel and AMD CPUs Peter Müller
2022-03-23 17:54 ` Michael Tremer
2022-03-19 21:11 ` [PATCH 10/11] Kernel: Disable function and stack tracers Peter Müller
2022-03-23 17:56 ` Michael Tremer
2022-03-19 21:11 ` [PATCH 11/11] Kernel: Update rootfile for x86_64 Peter Müller
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