CVE-2024-26926

In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> binder: check offset alignment in binder_get_object()<br /> <br /> Commit 6d98eb95b450 ("binder: avoid potential data leakage when copying<br /> txn") introduced changes to how binder objects are copied. In doing so,<br /> it unintentionally removed an offset alignment check done through calls<br /> to binder_alloc_copy_from_buffer() -&gt; check_buffer().<br /> <br /> These calls were replaced in binder_get_object() with copy_from_user(),<br /> so now an explicit offset alignment check is needed here. This avoids<br /> later complications when unwinding the objects gets harder.<br /> <br /> It is worth noting this check existed prior to commit 7a67a39320df<br /> ("binder: add function to copy binder object from buffer"), likely<br /> removed due to redundancy at the time.