Unverified Commit 4c94bdfb authored by openeuler-ci-bot's avatar openeuler-ci-bot Committed by Gitee
Browse files

!11703 binder: fix UAF caused by offsets overwrite 

Merge Pull Request from: @ci-robot 
 
PR sync from: Wupeng Ma <mawupeng1@huawei.com>
https://mailweb.openeuler.org/hyperkitty/list/kernel@openeuler.org/message/7KWBDN2MYYSJUSKKCMOIBEO77EY2U5NB/ 
 
https://gitee.com/src-openeuler/kernel/issues/IARY7V 
 
Link:https://gitee.com/openeuler/kernel/pulls/11703

 

Reviewed-by: default avatarZhang Changzhong <zhangchangzhong@huawei.com>
Signed-off-by: default avatarZhang Changzhong <zhangchangzhong@huawei.com>
parents b2dc24c8 bb989c66

drivers/android/binder.c

+1 −0
Original line number Diff line number Diff line
@@ -3555,6 +3555,7 @@ static void binder_transaction(struct binder_proc *proc, 
		 */

		copy_size = object_offset - user_offset;

		if (copy_size && (user_offset > object_offset ||

				object_offset > tr->data_size ||

				binder_alloc_copy_user_to_buffer(

					&target_proc->alloc,

					t->buffer, user_offset,