chore: cherry-pick 4 changes from Release-1-M121

[codebytere]

electron/security#460 - d4a197e4913f from chromium

Fix use-after-free in DrawTextInternal

DrawTextInternal was calling GetOrCreatePaintCanvas multiple times,
once at the start of the function, once inside of the
BaseRenderingContext2DAutoRestoreSkCanvas helper class and once in the
Draw call. GetOrCreatePaintCanvas destroys the canvas resource provider
if the GPU context is lost. If this happens on the second call to
GetOrCreatePaintCanvas, destroying the resource provider will
invalidate the cc::PaintCanvas returned by the first call to
GetOrCreatePaintCanvas.

The GPU process can technically crash at any point during the renderer
process execution (perhaps because of something another renderer
process did). We therefore have to assume that any call to
GetOrCreatePaintCanvas can invalidate previously returned
cc::PaintCanvas.

Change-Id: Ifa77735ab1b2b55b3d494f886b8566299937f6fe
Fixed: 1511567
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5198419
Reviewed-by: Fernando Serboncini fserb@chromium.org
Commit-Queue: Jean-Philippe Gravel jpgravel@chromium.org
Cr-Commit-Position: refs/heads/main@{#1248204}

electron/security#459 - 8755f76bec32 from chromium

[RTCPeerConnection] Exit early from RTCPeerConnectionHandler

For certain operations that require a live client
(i.e., RTCPeerConnection, which is garbage collected),
PeerConnectionHandler keeps a pointer to the client on the stack
to prevent garbage collection.

In some cases, the client may have already been garbage collected
(the client is null). In that case, there is no point in doing the
operation and it should exit early to avoid UAF/crashes.

This CL adds early exit to the cases that do not already have it.

Bug: 1514777
Change-Id: I27e9541cfaa74d978799c03e2832a0980f9e5710
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5210359
Reviewed-by: Tomas Gunnarsson tommi@chromium.org
Commit-Queue: Guido Urdaneta guidou@chromium.org
Cr-Commit-Position: refs/heads/main@{#1248826}

electron/security#461 - e321f354a613 from chromium

[M121] Fix UAF in SourceStreamToDataPipe

SourceStreamToDataPipe::ReadMore() is passing a callback with
Unretained(this) to net::SourceStream::Read(). But this callback may be
called even after the SourceStream is destructed. This is causing UAF
issue (crbug.com/1511085).

To solve this problem, this CL changes ReadMore() method to pass a
callback with a weak ptr of this.

(cherry picked from commit 6e36a69da1b73f9aea9c54bfbe6c5b9cb2c672a5)

Bug: 1511085
Change-Id: Idd4e34ff300ff5db2de1de7b303841c7db3a964a
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5179746
Reviewed-by: Adam Rice ricea@chromium.org
Commit-Queue: Tsuyoshi Horo horo@chromium.org
Cr-Original-Commit-Position: refs/heads/main@{#1244526}
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5231537
Reviewed-by: Kenichi Ishibashi bashi@chromium.org
Cr-Commit-Position: refs/branch-heads/6167@{#1621}
Cr-Branched-From: 222e786949e76e342d325ea0d008b4b6273f3a89-refs/heads/main@{#1233107}

Notes:

• Security: backported fix for 1511567.
• Security: backported fix for 1514777.
• Security: backported fix for 1511085.
• Security: backported fix for 1519980.

[ppontes]

@codebytere , I think we should also include 5239564: Speculatively fix race in mojo ShutDownOnIOThread, which is the fix to the embargoed critical 1519980.

[release-clerk]

Release Notes Persisted

• Security: backported fix for 1511567.
• Security: backported fix for 1514777.
• Security: backported fix for 1511085.
• Security: backported fix for 1519980.