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chore: cherry-pick b5950ad76471 from chromium #22945

merged 3 commits into from Apr 7, 2020


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@nornagon nornagon commented Apr 2, 2020

Protect automatic pull handlers with Mutex

In some cases, |rendering_automatic_pull_handlers_| in
DeferredTaskHandler can be touched from both the main thread and the
audio rendering thread. This CL adds a lock when it is updated,
processed, and cleared.

crash on the repro case after 30 min.

Test: Locally confirmed that the ASAN build with this patch does not
Bug: 1061018
Change-Id: I5f4440edcdc26e4a3afbfe8fad88492bdb49c323
Commit-Queue: Hongchan Choi
Reviewed-by: Raymond Toy
Cr-Commit-Position: refs/heads/master@{#750000}

Notes: Security: backport fix for CVE-2020-6451: Use after free in WebAudio

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@nornagon nornagon force-pushed the cherry-pick/7-2-x/chromium/b5950ad76471 branch from 96e9747 to 1db534f Apr 6, 2020
@nornagon nornagon merged commit 72a7588 into 7-2-x Apr 7, 2020
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@release-clerk release-clerk bot commented Apr 7, 2020

Release Notes Persisted

Security: backport fix for CVE-2020-6451: Use after free in WebAudio

@nornagon nornagon deleted the cherry-pick/7-2-x/chromium/b5950ad76471 branch Apr 7, 2020
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3 participants