A vlc security update has been released for Arch Linux.

ASA-202101-35: vlc: arbitrary code execution

Arch Linux Security Advisory ASA-202101-35
=========================================
Severity: Medium
Date : 2021-01-20
CVE-ID : CVE-2020-26664
Package : vlc
Type : arbitrary code execution
Remote : No
Link :   https://security.archlinux.org/AVG-1423

Summary
======
The package vlc before version 3.0.12-1 is vulnerable to arbitrary code
execution.

Resolution
=========
Upgrade to 3.0.12-1.

# pacman -Syu "vlc>=3.0.12-1"

The problem has been fixed upstream in version 3.0.12.

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

Description
==========
A vulnerability in EbmlTypeDispatcher::send in VideoLAN VLC media
player 3.0.11 allows attackers to trigger a heap-based buffer overflow
via a crafted .mkv file. It is fixed in version 3.0.12.

Impact
=====
A crafted .mkv file can crash or possibly execute arbitrary code.

References
=========
  https://gist.githubusercontent.com/henices/db11664dd45b9f322f8514d182aef5ea/raw/d56940c8bf211992bf4f3309a85bb2b69383e511/CVE-2020-26664.txt
  https://code.videolan.org/videolan/vlc-3.0/-/commit/ec1f55ee9ace5cc675395a1bc9700d99679e7e8c
  https://security.archlinux.org/CVE-2020-26664