- From: <bugzilla@jessica.w3.org>
- Date: Mon, 03 Mar 2014 23:45:09 +0000
- To: public-html-media@w3.org
https://www.w3.org/Bugs/Public/show_bug.cgi?id=24904 Bug ID: 24904 Summary: Uint8Array parameters should not be modifiable after method calls return Product: HTML WG Version: unspecified Hardware: All OS: All Status: NEW Severity: normal Priority: P3 Component: Encrypted Media Extensions Assignee: adrianba@microsoft.com Reporter: ddorwin@google.com QA Contact: public-html-bugzilla@w3.org CC: hsivonen@hsivonen.fi, mike@w3.org, public-html-media@w3.org, silviapfeiffer1@gmail.com, watsonm@netflix.com MediaKeys.createSession() and MediaKeySession.update() both accept Uint8Arrays. Since these methods schedule a task, it's possible that JavaScript can modify the contents of those arrays before the task is run. For example: array[0]=0; mediaKeys.createSession("video/webm", array); array[0]=9; // Scheduled task will run later and see 9 in the first element. Similar issues have been reported in MSE, WebCrypto, and DataCue in the HTML spec (bug 24687). This was originally raised in http://lists.w3.org/Archives/Public/public-html-media/2014Feb/0019.html. The consensus in that thread seems to be: 1) We should have a consistent approach across specs. 2) The behavior should instead be effectively a copy (implemented using a copy-on-write optimization if desired). -- You are receiving this mail because: You are on the CC list for the bug.
Received on Monday, 3 March 2014 23:45:10 UTC