From: Kees Cook <keescook@chromium.org>
To: linux-hardening@vger.kernel.org
Cc: Kees Cook <keescook@chromium.org>,
Siddhesh Poyarekar <siddhesh@gotplt.org>,
Nathan Chancellor <nathan@kernel.org>,
Nick Desaulniers <ndesaulniers@google.com>,
Arnd Bergmann <arnd@arndb.de>, Juergen Gross <jgross@suse.com>,
Boris Ostrovsky <boris.ostrovsky@oracle.com>,
Tom Rix <trix@redhat.com>, Miguel Ojeda <ojeda@kernel.org>,
linux-kernel@vger.kernel.org, llvm@lists.linux.dev
Subject: [PATCH 0/4] fortify: Use __builtin_dynamic_object_size() when available
Date: Tue, 20 Sep 2022 12:21:58 -0700 [thread overview]
Message-ID: <20220920192202.190793-1-keescook@chromium.org> (raw)
Hi,
This adjusts CONFIG_FORTIFY_SOURCE's coverage to include greater runtime
size checking from GCC and Clang's __builtin_dynamic_object_size(), which
the compilers can track either via code flow or from __alloc_size() hints.
Thanks,
-Kees
Kees Cook (4):
x86/entry: Work around Clang __bdos() bug
fortify: Explicitly check bounds are compile-time constants
fortify: Convert to struct vs member helpers
fortify: Use __builtin_dynamic_object_size() when available
arch/x86/xen/enlighten_pv.c | 3 +-
drivers/misc/lkdtm/heap.c | 1 +
include/linux/compiler_attributes.h | 5 ++
include/linux/fortify-string.h | 125 ++++++++++++++++------------
4 files changed, 81 insertions(+), 53 deletions(-)
--
2.34.1
next reply other threads:[~2022-09-20 19:22 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-09-20 19:21 Kees Cook [this message]
2022-09-20 19:21 ` [PATCH 1/4] x86/entry: Work around Clang __bdos() bug Kees Cook
2022-09-21 0:07 ` Boris Ostrovsky
2022-09-20 19:22 ` [PATCH 2/4] fortify: Explicitly check bounds are compile-time constants Kees Cook
2022-09-21 11:48 ` Siddhesh Poyarekar
2022-09-22 3:46 ` Kees Cook
2022-09-20 19:22 ` [PATCH 3/4] fortify: Convert to struct vs member helpers Kees Cook
2022-09-20 19:22 ` [PATCH 4/4] fortify: Use __builtin_dynamic_object_size() when available Kees Cook
2022-09-21 11:24 ` Miguel Ojeda
2022-09-21 11:43 ` Siddhesh Poyarekar
2022-09-22 3:33 ` Kees Cook
2022-09-22 14:45 ` Siddhesh Poyarekar
2022-11-22 10:20 ` Siddhesh Poyarekar
2022-11-23 5:15 ` Kees Cook
2022-11-23 15:29 ` Siddhesh Poyarekar
2023-01-13 15:59 ` linux-next - bxnt buffer overflow in strnlen Niklas Cassel
2023-01-13 16:08 ` linux-next - bnxt " Niklas Cassel
2023-01-13 22:44 ` Kees Cook
2023-01-16 10:56 ` Niklas Cassel
2022-09-22 20:26 ` [PATCH 0/4] fortify: Use __builtin_dynamic_object_size() when available Siddhesh Poyarekar
2022-09-23 0:20 ` Kees Cook
2022-09-23 0:55 ` Siddhesh Poyarekar
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