A libtpms security update has been released for Arch Linux.

ASA-202107-9: libtpms: information disclosure

Arch Linux Security Advisory ASA-202107-9
========================================
Severity: Medium
Date : 2021-07-01
CVE-ID : CVE-2021-3623
Package : libtpms
Type : information disclosure
Remote : No
Link :   https://security.archlinux.org/AVG-2108

Summary
======
The package libtpms before version 0.8.4-1 is vulnerable to information
disclosure.

Resolution
=========
Upgrade to 0.8.4-1.

# pacman -Syu "libtpms>=0.8.4-1"

The problem has been fixed upstream in version 0.8.4.

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

Description
==========
A security issue was found in libtpms before version 0.8.4. The flaw
can be triggered by specially-crafted TPM 2 command packets containing
illegal values and may lead to an out-of-bounds access when the
volatile state of the TPM 2 is marshalled/written or unmarshalled/read.

Impact
=====
An attacker could disclose sensitive information about the state of the
TPM through crafted command packets.

References
=========
  https://bugzilla.redhat.com/show_bug.cgi?id76806
  https://github.com/stefanberger/libtpms/pull/223
  https://github.com/stefanberger/libtpms/pull/225
  https://github.com/stefanberger/libtpms/commit/f16250b35aff6995e540143a9858c9cf0d1f9573
  https://github.com/stefanberger/libtpms/commit/3ef9b26cb9f28bd64d738bff9505a20d4eb56acd
  https://github.com/stefanberger/libtpms/commit/5cc98a62dc6f204dcf5b87c2ee83ac742a6a319b
  https://security.archlinux.org/CVE-2021-3623