Important: virt:8.1 security update

Synopsis

Important: virt:8.1 security update

Type/Severity

Security Advisory: Important

Topic

An update for the virt:8.1 module is now available for Advanced Virtualization for RHEL 8.1.1.

Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

Description

The Advanced Virtualization module provides the user-space component for running virtual machines that use KVM in environments managed by Red Hat products.

Security Fix(es):

• qemu-kvm: QEMU: slirp: OOB buffer access while emulating tcp protocols in tcp_emu() (CVE-2020-7039)
  
• qemu-kvm: QEMU: Slirp: potential OOB access due to unsafe snprintf() usages (CVE-2020-8608)
  

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Solution

For details on how to apply this update, which includes the changes described in this advisory, refer to:

https://access.redhat.com/articles/11258

Affected Products

• Red Hat Enterprise Linux Advanced Virtualization 8 x86_64
• Red Hat Enterprise Linux Advanced Virtualization (for RHEL Server for IBM Power LE) 8 ppc64le
• Red Hat Enterprise Linux Advanced Virtualization (for RHEL Server for ARM 64) 8 aarch64
• Red Hat Enterprise Linux Advanced Virtualization (for RHEL Server for IBM System Z) 8 s390x

Fixes

• BZ - 1791551 - CVE-2020-7039 QEMU: slirp: OOB buffer access while emulating tcp protocols in tcp_emu()
• BZ - 1798453 - CVE-2020-8608 QEMU: Slirp: potential OOB access due to unsafe snprintf() usages

CVEs

• CVE-2020-7039
• CVE-2020-8608

References

• https://access.redhat.com/security/updates/classification/#important