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chore: cherry-pick 1283160e334f 0dc563cbbca5 from chromium (#25391)
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From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001 | ||
From: Cheng Zhao <zcbenz@gmail.com> | ||
Date: Thu, 4 Oct 2018 14:57:02 -0700 | ||
Subject: fix: remove references to launched device before it is reset | ||
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[1111737] [High] [CVE-2020-6576]: Security: OffscreenCanvas - Use After Free in OffscreenCanvasRenderingContext2D::DrawTextInternal() | ||
Backport https://chromium.googlesource.com/chromium/src/+/1283160e334f78c5eed4668d95e04f2ed2e2a4a3. | ||
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diff --git a/content/browser/renderer_host/media/video_capture_controller.cc b/content/browser/renderer_host/media/video_capture_controller.cc | ||
index 8a3f1c3be3d804e3879a8a6aa5921bee99b0879e..85ed13b0008c58ba45cc28be36441234d928ed30 100644 | ||
--- a/content/browser/renderer_host/media/video_capture_controller.cc | ||
+++ b/content/browser/renderer_host/media/video_capture_controller.cc | ||
@@ -709,6 +709,10 @@ void VideoCaptureController::ReleaseDeviceAsync(base::OnceClosure done_cb) { | ||
device_launcher_->AbortLaunch(); | ||
return; | ||
} | ||
+ // |buffer_contexts_| contain references to |launched_device_| as observers. | ||
+ // Clear those observer references prior to resetting |launced_device_|. | ||
+ for (auto& entry : buffer_contexts_) | ||
+ entry.set_consumer_feedback_observer(nullptr); | ||
launched_device_.reset(); | ||
} | ||
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