From: Todd Kjos <tkjos@google.com>
To: tkjos@google.com, gregkh@linuxfoundation.org,
christian@brauner.io, arve@android.com,
devel@driverdev.osuosl.org, linux-kernel@vger.kernel.org,
maco@google.com
Cc: joel@joelfernandes.org, kernel-team@android.com, avakj45@gmail.com
Subject: [PATCH v2 0/4] binder: Prevent untranslated sender data from being copied to target
Date: Tue, 30 Nov 2021 10:51:48 -0800 [thread overview]
Message-ID: <20211130185152.437403-1-tkjos@google.com> (raw)
Binder copies transactions directly from the sender buffer
to the target buffer and then fixes up BINDER_TYPE_PTR and
BINDER_TYPE_FDA objects. This means there is a brief time
when sender pointers and fds are visible to the target
process.
This series reworks the the sender to target copy to
avoid leaking any untranslated sender data from being
visible in the target.
Todd Kjos (4):
binder: binder: fix handling of error during copy
binder: defer copies of pre-patched txn data
binder: read pre-translated fds from sender buffer
binder: avoid potential data leakage when copying txn
v2:
- add "binder: fix handling of error during copy" to fix
bug noticed by Dan Carpenter
- address Dan Carpenter's comments
drivers/android/binder.c | 442 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++----------------
1 file changed, 387 insertions(+), 55 deletions(-)
next reply other threads:[~2021-11-30 18:52 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-11-30 18:51 Todd Kjos [this message]
2021-11-30 18:51 ` [PATCH v2 1/4] binder: fix handling of error during copy Todd Kjos
2021-12-01 13:49 ` Christian Brauner
2021-11-30 18:51 ` [PATCH v2 2/4] binder: avoid potential data leakage when copying txn Todd Kjos
2021-12-01 13:54 ` Christian Brauner
2021-11-30 18:51 ` [PATCH v2 3/4] binder: read pre-translated fds from sender buffer Todd Kjos
2021-12-01 13:58 ` Christian Brauner
2021-11-30 18:51 ` [PATCH v2 4/4] binder: defer copies of pre-patched txn data Todd Kjos
2021-12-01 6:13 ` [PATCH v2 0/4] binder: Prevent untranslated sender data from being copied to target Dan Carpenter
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