tree ba3212002fb6f32960cab2e6af711ff4b96c0ccd
parent 14c083a2defb41fd1e10502cb0358551801bf4b9
author cdumez@apple.com <cdumez@apple.com@268f45cc-cd09-0410-ab3c-d52691b4dbfc> 1579222446 +0000
committer cdumez@apple.com <cdumez@apple.com@268f45cc-cd09-0410-ab3c-d52691b4dbfc> 1579222446 +0000

IPC hardening for WebPageProxy::SetPromisedDataForImage message
https://bugs.webkit.org/show_bug.cgi?id=206380
<rdar://problem/58625196>

Reviewed by Geoffrey Garen.

IPC hardening for WebPageProxy::SetPromisedDataForImage message. Make sure the shared memory handle sent over IPC is not null
and null check the SharedMemory object after calling SharedMemory::map().

* UIProcess/mac/WebPageProxyMac.mm:
(WebKit::WebPageProxy::setPromisedDataForImage):

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@254724 268f45cc-cd09-0410-ab3c-d52691b4dbfc