From: Ard Biesheuvel <ardb@kernel.org>
To: linux-arm-kernel@lists.infradead.org
Cc: will@kernel.org, catalin.marinas@arm.com, mark.rutland@arm.com,
Ard Biesheuvel <ardb@kernel.org>,
Sami Tolvanen <samitolvanen@google.com>,
Kees Cook <keescook@chromium.org>
Subject: [PATCH 0/2] arm64: harden shadow call stack pointer handling
Date: Mon, 5 Dec 2022 21:03:39 +0100 [thread overview]
Message-ID: <20221205200341.463601-1-ardb@kernel.org> (raw)
A couple of tweaks to the arm64 entry code to avoid loading the shadow
call stack pointer in a way that could potentially be unsafe in the
context of ROP attacks.
Cc: Sami Tolvanen <samitolvanen@google.com>
Cc: Kees Cook <keescook@chromium.org>
Ard Biesheuvel (2):
arm64: Always load shadow stack pointer directly from the task struct
arm64: Stash shadow stack pointer in the task struct on interrupt
arch/arm64/include/asm/scs.h | 7 ++++---
arch/arm64/kernel/entry.S | 16 +++++++---------
arch/arm64/kernel/head.S | 2 +-
3 files changed, 12 insertions(+), 13 deletions(-)
--
2.35.1
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
next reply other threads:[~2022-12-05 20:04 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-12-05 20:03 Ard Biesheuvel [this message]
2022-12-05 20:03 ` [PATCH 1/2] arm64: Always load shadow stack pointer directly from the task struct Ard Biesheuvel
2022-12-05 20:03 ` [PATCH 2/2] arm64: Stash shadow stack pointer in the task struct on interrupt Ard Biesheuvel
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20221205200341.463601-1-ardb@kernel.org \
--to=ardb@kernel.org \
--cc=catalin.marinas@arm.com \
--cc=keescook@chromium.org \
--cc=linux-arm-kernel@lists.infradead.org \
--cc=mark.rutland@arm.com \
--cc=samitolvanen@google.com \
--cc=will@kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).