Carlos Llamas 68a28f551e binder: check offset alignment in binder_get_object() ... commit aaef73821a upstream. Commit 6d98eb95b4 ("binder: avoid potential data leakage when copying txn") introduced changes to how binder objects are copied. In doing so, it unintentionally removed an offset alignment check done through calls to binder_alloc_copy_from_buffer() -> check_buffer(). These calls were replaced in binder_get_object() with copy_from_user(), so now an explicit offset alignment check is needed here. This avoids later complications when unwinding the objects gets harder. It is worth noting this check existed prior to commit 7a67a39320 ("binder: add function to copy binder object from buffer"), likely removed due to redundancy at the time. Fixes: 6d98eb95b4 ("binder: avoid potential data leakage when copying txn") Cc: stable@vger.kernel.org Signed-off-by: Carlos Llamas <cmllamas@google.com> Acked-by: Todd Kjos <tkjos@google.com> Link: https://lore.kernel.org/r/20240330190115.1877819-1-cmllamas@google.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2024-05-02 16:18:31 +02:00
..
Kconfig	binder: add functions to copy to/from binder buffers	2019-02-12 10:43:57 +01:00
Makefile	treewide: Add SPDX license identifier - Makefile/Kconfig	2019-05-21 10:50:46 +02:00
binder.c	binder: check offset alignment in binder_get_object()	2024-05-02 16:18:31 +02:00
binder_alloc.c	binder: fix unused alloc->free_async_space	2024-01-25 14:34:29 -08:00
binder_alloc.h	binder: fix memory leak in binder_init()	2023-08-16 18:19:23 +02:00
binder_alloc_selftest.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 282	2019-06-05 17:36:37 +02:00
binder_internal.h	binder: prevent UAF for binderfs devices II	2020-03-12 13:00:17 +01:00
binder_trace.h	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 282	2019-06-05 17:36:37 +02:00
binderfs.c	binderfs: use refcount for binder control devices too	2020-03-25 08:25:50 +01:00