An opera security update has been released for Arch Linux.

ASA-202107-4: opera: arbitrary code execution

Arch Linux Security Advisory ASA-202107-4
========================================
Severity: High
Date : 2021-07-01
CVE-ID : CVE-2021-30554 CVE-2021-30555 CVE-2021-30556 CVE-2021-30557
Package : opera
Type : arbitrary code execution
Remote : Yes
Link :   https://security.archlinux.org/AVG-2083

Summary
======
The package opera before version 77.0.4054.146-1 is vulnerable to
arbitrary code execution.

Resolution
=========
Upgrade to 77.0.4054.146-1.

# pacman -Syu "opera>w.0.4054.146-1"

The problems have been fixed upstream in version 77.0.4054.146.

Workaround
=========
None.

Description
==========
- CVE-2021-30554 (arbitrary code execution)

A use after free security issue has been found in the WebGL component
of the Chromium browser engine before version 91.0.4472.114. Google is
aware that an exploit for CVE-2021-30554 exists in the wild.

- CVE-2021-30555 (arbitrary code execution)

A use after free security issue has been found in the Sharing component
of the Chromium browser engine before version 91.0.4472.114.

- CVE-2021-30556 (arbitrary code execution)

A use after free security issue has been found in the WebAudio
component of the Chromium browser engine before version 91.0.4472.114.

- CVE-2021-30557 (arbitrary code execution)

A use after free security issue has been found in the TabGroups
component of the Chromium browser engine before version 91.0.4472.114.

Impact
=====
A remote attacker could execute arbitrary code through a crafted web
page. Google is aware that an exploit for one of the security issues
exists in the wild.

References
=========
  https://blogs.opera.com/desktop/changelog-for-77/
  https://chromereleases.googleblog.com/2021/06/stable-channel-update-for-desktop_17.html
  https://crbug.com/1219857
  https://crbug.com/1215029
  https://crbug.com/1212599
  https://crbug.com/1202102
  https://security.archlinux.org/CVE-2021-30554
  https://security.archlinux.org/CVE-2021-30555
  https://security.archlinux.org/CVE-2021-30556
  https://security.archlinux.org/CVE-2021-30557