A wpa_supplicant security update has been released for Arch Linux.

ASA-202102-25: wpa_supplicant: arbitrary code execution

Arch Linux Security Advisory ASA-202102-25
=========================================
Severity: High
Date : 2021-02-12
CVE-ID : CVE-2021-0326
Package : wpa_supplicant
Type : arbitrary code execution
Remote : Yes
Link :   https://security.archlinux.org/AVG-1530

Summary
======
The package wpa_supplicant before version 2:2.9-8 is vulnerable to
arbitrary code execution.

Resolution
=========
Upgrade to 2:2.9-8.

# pacman -Syu "wpa_supplicant>=2:2.9-8"

The problem has been fixed upstream but no release is available yet.

Workaround
=========
The issue can be mitigated by disabling P2P, using the control
interface command "P2P_SET disabled 1" or "p2p_disabled=1" in (each, if
multiple interfaces used) wpa_supplicant configuration file.

Description
==========
A security issue was found in hostapd and wpa_supplicant version 2.9. A
missing length check in the p2p_copy_client_info function could lead to
a buffer overflow.

Impact
=====
An attacker within radio range of the device running P2P discovery
might be able to cause a crash or execute arbitrary code.

References
=========
  https://bugs.archlinux.org/task/69525
  https://w1.fi/security/2020-2/wpa_supplicant-p2p-group-info-processing-vulnerability.txt
  https://bugs.chromium.org/p/oss-fuzz/issues/detail?id'269
  https://w1.fi/cgit/hostap/commit/?id?7272febe24a8f0ea828b5b2f35f13c3821901e
  https://security.archlinux.org/CVE-2021-0326