kernel-aes67/drivers/android
Carlos Llamas aaef73821a binder: check offset alignment in binder_get_object()
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>
2024-04-11 15:19:12 +02:00
..
Kconfig remove CONFIG_ANDROID 2022-07-01 10:41:09 +02:00
Makefile
binder.c binder: check offset alignment in binder_get_object() 2024-04-11 15:19:12 +02:00
binder_alloc.c binder: remove redundant variable page_addr 2024-03-07 22:22:32 +00:00
binder_alloc.h binder: switch alloc->mutex to spinlock_t 2023-12-05 09:23:41 +09:00
binder_alloc_selftest.c android: binder: fix a kernel-doc enum warning 2023-12-06 08:48:26 +09:00
binder_internal.h Binder: Add async from to transaction record 2023-05-13 20:38:12 +09:00
binder_trace.h binder: keep vma addresses type as unsigned long 2023-12-05 09:23:38 +09:00
binderfs.c android: removed duplicate linux/errno 2024-01-07 09:48:26 +01:00