Disregard alleged binder entities beyond parcel bounds

When appending one parcel's contents to another, ignore binder
objects within the source Parcel that appear to lie beyond the
formal bounds of that Parcel's data buffer.

Bug 17312693

Change-Id: If592a260f3fcd9a56fc160e7feb2c8b44c73f514
(cherry picked from commit 27182be9f2)
This commit is contained in:
Christopher Tate 2015-05-27 17:53:02 -07:00 committed by Christopher Hocutt
parent 861c3f5615
commit 1b8a2f82fe

View File

@ -390,7 +390,7 @@ status_t Parcel::appendFrom(const Parcel *parcel, size_t offset, size_t len)
// Count objects in range
for (int i = 0; i < (int) size; i++) {
size_t off = objects[i];
if ((off >= offset) && (off < offset + len)) {
if ((off >= offset) && (off + sizeof(flat_binder_object) <= offset + len)) {
if (firstIndex == -1) {
firstIndex = i;
}