Description:

Red Hat has released a security update to address a vulnerabilities in the following products:

• Red Hat Enterprise Linux for x86_64 - Extended Update Support 8.1 x86_64
• Red Hat Enterprise Linux for IBM z Systems - Extended Update Support 8.1 s390x
• Red Hat Enterprise Linux for Power, little endian - Extended Update Support 8.1 ppc64le
• Red Hat Enterprise Linux for ARM 64 - Extended Update Support 8.1 aarch64
• Red Hat Enterprise Linux Server (for IBM Power LE) - Update Services for SAP Solutions 8.1 ppc64le
• Red Hat Enterprise Linux Server - Update Services for SAP Solutions 8.1 x86_64
• Red Hat Enterprise Linux for x86_64 - Extended Update Support 8.2 x86_64
• Red Hat Enterprise Linux Server - AUS 8.2 x86_64
• Red Hat Enterprise Linux for IBM z Systems - Extended Update Support 8.2 s390x
• Red Hat Enterprise Linux for Power, little endian - Extended Update Support 8.2 ppc64le
• Red Hat Enterprise Linux Server - TUS 8.2 x86_64
• Red Hat Enterprise Linux for ARM 64 - Extended Update Support 8.2 aarch64
• Red Hat Enterprise Linux Server (for IBM Power LE) - Update Services for SAP Solutions 8.2 ppc64le
• Red Hat Enterprise Linux Server - Update Services for SAP Solutions 8.2 x86_64
• Red Hat Enterprise Linux for x86_64 8 x86_64
• Red Hat Enterprise Linux for x86_64 - Extended Update Support 8.4 x86_64
• Red Hat Enterprise Linux Server - AUS 8.4 x86_64
• Red Hat Enterprise Linux Server - TUS 8.4 x86_64
• Red Hat Enterprise Linux Server - Update Services for SAP Solutions 8.4 x86_64
• dotNET on RHEL (for RHEL Server) 1 x86_64
• dotNET on RHEL (for RHEL Workstation) 1 x86_64
• dotNET on RHEL (for RHEL Compute Node) 1 x86_64
• Red Hat Enterprise Linux for IBM z Systems 8 s390x
• Red Hat Enterprise Linux for IBM z Systems - Extended Update Support 8.4 s390x
• Red Hat Enterprise Linux for Power, little endian 8 ppc64le
• Red Hat Enterprise Linux for Power, little endian - Extended Update Support 8.4 ppc64le
• Red Hat Enterprise Linux for ARM 64 8 aarch64
• Red Hat Enterprise Linux for ARM 64 - Extended Update Support 8.4 aarch64
• Red Hat Enterprise Linux Server (for IBM Power LE) - Update Services for SAP Solutions 8.4 ppc64le
• Red Hat Enterprise Linux Server - AUS 7.6 x86_64
• Red Hat Enterprise Linux Server (for IBM Power LE) - Update Services for SAP Solutions 7.6 ppc64le
• Red Hat Enterprise Linux Server - Update Services for SAP Solutions 7.6 x86_64
• Red Hat Enterprise Linux Server - TUS 7.6 x86_64
• Red Hat Enterprise Linux for Real Time 7 x86_64
• Red Hat Enterprise Linux for Real Time for NFV 7 x86_64
• Red Hat Enterprise Linux Server 7 x86_64
• Red Hat Enterprise Linux Workstation 7 x86_64
• Red Hat Enterprise Linux Desktop 7 x86_64
• Red Hat Enterprise Linux for IBM z Systems 7 s390x
• Red Hat Enterprise Linux for Power, big endian 7 ppc64
• Red Hat Enterprise Linux for Scientific Computing 7 x86_64
• Red Hat Enterprise Linux for Power, little endian 7 ppc64le
• Red Hat Virtualization Host 4 for RHEL 7 x86_64
• Hat Enterprise Linux for Power, little endian 7 ppc64le

Threats:

Attacker could exploit these vulnerabilities by doing the following:

• Out-of-bounds read
• Memory corruption

Best practice and Recommendations:

The CERT team encourages users to review Red Hat security advisory and apply the necessary updates:

• https://access.redhat.com/errata/RHSA-2021:3791
• https://access.redhat.com/errata/RHSA-2021:3801
• https://access.redhat.com/errata/RHSA-2021:3802
• https://access.redhat.com/errata/RHSA-2021:3812
• https://access.redhat.com/errata/RHSA-2021:3814
• https://access.redhat.com/errata/RHSA-2021:3816
• https://access.redhat.com/errata/RHSA-2021:3818
• https://access.redhat.com/errata/RHSA-2021:3819
• https://access.redhat.com/errata/RHSA-2021:3836
• https://access.redhat.com/errata/RHSA-2021:3837