Bug 853229

Summary:	<dev-qt/qtwebengine-5.15.5_p20220618: CVE-2022-0796: Use after free in Media
Product:	Gentoo Security	Reporter:	Andreas Sturmlechner <asturm>
Component:	Vulnerabilities	Assignee:	Gentoo Security <security>
Status:	RESOLVED FIXED
Severity:	major	CC:	qt
Priority:	Normal
Version:	unspecified
Hardware:	All
OS:	Linux
See Also:	https://bugs.gentoo.org/show_bug.cgi?id=834477
Whiteboard:	A2 [glsa+]
Package list:		Runtime testing required:	---
Bug Depends on:	847613, 853232
Bug Blocks:

Description Andreas Sturmlechner gentoo-dev

2022-06-20 19:22:57 UTC

"CVE-2022-0796: Use after free in Media87-based
Manual backport of patch originally reviewed on
https://chromium-review.googlesource.com/c/chromium/src/+/3482463:
Guard BatchingMediaLog::event_handlers_ with lock

It seems that despite MediaLog::OnWebMediaPlayerDestroyed and
MediaLog::AddLogRecord both grabbing a lock,
BatchingMediaLog::AddLogRecordLocked can escape the lock handle by
posting BatchingMediaLog::SendQueuedMediaEvents, causing a race.

When the addition of an event is interrupted by the deletion of a player
due to player culling in MediaInspectorContextImpl, a UAF can occur."

https://code.qt.io/cgit/qt/qtwebengine-chromium.git/commit/?h=87-based&id=ecc2bb74f1f7140fc52650042299be18e826b27b

Comment 1 Larry the Git Cow gentoo-dev

2022-07-06 10:27:49 UTC

The bug has been referenced in the following commit(s):

https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=e66f923a9e2f5bc4ac35e24502c159cbfe759f6b

commit e66f923a9e2f5bc4ac35e24502c159cbfe759f6b
Author:     Andreas Sturmlechner <asturm@gentoo.org>
AuthorDate: 2022-07-06 09:18:25 +0000
Commit:     Andreas Sturmlechner <asturm@gentoo.org>
CommitDate: 2022-07-06 10:27:27 +0000

    dev-qt/qtwebengine: Cleanup vulnerable 5.15.4_p20220526
    
    Bug: https://bugs.gentoo.org/853229
    Signed-off-by: Andreas Sturmlechner <asturm@gentoo.org>

 dev-qt/qtwebengine/Manifest                        |   1 -
 .../qtwebengine-5.15.4_p20220526.ebuild            | 280 ---------------------
 2 files changed, 281 deletions(-)

Comment 2 John Helmert III archtester

2022-08-14 04:59:07 UTC

GLSA request filed

Comment 3 Larry the Git Cow gentoo-dev

2022-08-14 14:34:32 UTC

The bug has been referenced in the following commit(s):

https://gitweb.gentoo.org/data/glsa.git/commit/?id=3212eacb7aa1bccb5bf765cd0a4fb91d206ad2c5

commit 3212eacb7aa1bccb5bf765cd0a4fb91d206ad2c5
Author:     GLSAMaker <glsamaker@gentoo.org>
AuthorDate: 2022-08-14 14:29:30 +0000
Commit:     Sam James <sam@gentoo.org>
CommitDate: 2022-08-14 14:33:57 +0000

    [ GLSA 202208-25 ] Chromium, Google Chrome, Microsoft Edge, QtWebEngine: Multiple Vulnerabilities
    
    Bug: https://bugs.gentoo.org/773040
    Bug: https://bugs.gentoo.org/787950
    Bug: https://bugs.gentoo.org/800181
    Bug: https://bugs.gentoo.org/810781
    Bug: https://bugs.gentoo.org/815397
    Bug: https://bugs.gentoo.org/828519
    Bug: https://bugs.gentoo.org/829161
    Bug: https://bugs.gentoo.org/834477
    Bug: https://bugs.gentoo.org/835397
    Bug: https://bugs.gentoo.org/835761
    Bug: https://bugs.gentoo.org/836011
    Bug: https://bugs.gentoo.org/836381
    Bug: https://bugs.gentoo.org/836777
    Bug: https://bugs.gentoo.org/836830
    Bug: https://bugs.gentoo.org/837497
    Bug: https://bugs.gentoo.org/838049
    Bug: https://bugs.gentoo.org/838433
    Bug: https://bugs.gentoo.org/838682
    Bug: https://bugs.gentoo.org/841371
    Bug: https://bugs.gentoo.org/843035
    Bug: https://bugs.gentoo.org/843728
    Bug: https://bugs.gentoo.org/847370
    Bug: https://bugs.gentoo.org/847613
    Bug: https://bugs.gentoo.org/848864
    Bug: https://bugs.gentoo.org/851003
    Bug: https://bugs.gentoo.org/851009
    Bug: https://bugs.gentoo.org/853229
    Bug: https://bugs.gentoo.org/853643
    Bug: https://bugs.gentoo.org/854372
    Signed-off-by: GLSAMaker <glsamaker@gentoo.org>
    Signed-off-by: Sam James <sam@gentoo.org>

 glsa-202208-25.xml | 284 +++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 284 insertions(+)

Comment 4 Sam James archtester

2022-08-14 14:37:48 UTC

GLSA done, all done.