Moderate: virt:rhel and virt-devel:rhel security, bug fix, and enhancement update

标题

An update for the virt:rhel and virt-devel:rhel modules is now available for Red Hat Enterprise Linux 8.

Red Hat Product Security has rated this update as having a security impact of Moderate. 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.

描述

Kernel-based Virtual Machine (KVM) offers a full virtualization solution for Linux on numerous hardware platforms. The virt:rhel module contains packages which provide user-space components used to run virtual machines using KVM. The packages also provide APIs for managing and interacting with the virtualized systems.

Security Fix(es):

• QEMU: QXL: integer overflow in cursor_alloc() can lead to heap buffer overflow (CVE-2021-4206)
• QEMU: QXL: double fetch in qxl_cursor() can lead to heap buffer overflow (CVE-2021-4207)
• QEMU: virtio-net: map leaking on error during receive (CVE-2022-26353)
• QEMU: vhost-vsock: missing virtqueue detach on error can lead to memory leak (CVE-2022-26354)

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.

Bug Fix(es):

• RHEL 9.0 guest with vsock device migration failed from RHEL 9.0 > RHEL 8.6 (BZ#2071103)
• Fail to rebuild the reference count tables of qcow2 image on host block devices (e.g. LVs) (BZ#2072242)
• Remove upstream-only devices from the qemu-kvm binary (BZ#2077928)
• When doing a cpu-baseline between skylake and cascadelake, cascadelake is selected as baseline. (BZ#2084030)
• Virt-v2v can't convert rhel8.6 guest from VMware on rhel8.6 (BZ#2093415)

Enhancement(s):

• Allow memory prealloc from multiple threads (BZ#2075569)

解决方案

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

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

受影响的产品

• Red Hat Enterprise Linux for x86_64 8 x86_64
• Red Hat Enterprise Linux for x86_64 - Extended Update Support 8.6 x86_64
• Red Hat Enterprise Linux Server - AUS 8.6 x86_64
• Red Hat Enterprise Linux for IBM z Systems 8 s390x
• Red Hat Enterprise Linux for IBM z Systems - Extended Update Support 8.6 s390x
• Red Hat Enterprise Linux for Power, little endian 8 ppc64le
• Red Hat Enterprise Linux for Power, little endian - Extended Update Support 8.6 ppc64le
• Red Hat Enterprise Linux Server - TUS 8.6 x86_64
• Red Hat Enterprise Linux for ARM 64 8 aarch64
• Red Hat CodeReady Linux Builder for x86_64 8 x86_64
• Red Hat CodeReady Linux Builder for Power, little endian 8 ppc64le
• Red Hat CodeReady Linux Builder for ARM 64 8 aarch64
• Red Hat CodeReady Linux Builder for IBM z Systems 8 s390x
• Red Hat Enterprise Linux for ARM 64 - Extended Update Support 8.6 aarch64
• Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions 8.6 ppc64le
• Red Hat Enterprise Linux for x86_64 - Update Services for SAP Solutions 8.6 x86_64
• Red Hat CodeReady Linux Builder for x86_64 - Extended Update Support 8.6 x86_64
• Red Hat CodeReady Linux Builder for Power, little endian - Extended Update Support 8.6 ppc64le
• Red Hat CodeReady Linux Builder for IBM z Systems - Extended Update Support 8.6 s390x
• Red Hat CodeReady Linux Builder for ARM 64 - Extended Update Support 8.6 aarch64

修复

• BZ - 2036966 - CVE-2021-4207 QEMU: QXL: double fetch in qxl_cursor() can lead to heap buffer overflow
• BZ - 2036998 - CVE-2021-4206 QEMU: QXL: integer overflow in cursor_alloc() can lead to heap buffer overflow
• BZ - 2063197 - CVE-2022-26353 QEMU: virtio-net: map leaking on error during receive
• BZ - 2063257 - CVE-2022-26354 QEMU: vhost-vsock: missing virtqueue detach on error can lead to memory leak
• BZ - 2072242 - Fail to rebuild the reference count tables of qcow2 image on host block devices (e.g. LVs) [rhel-8.6.0.z]
• BZ - 2075569 - Allow memory prealloc from multiple threads [rhel-8.6.0.z]
• BZ - 2084030 - When doing a cpu-baseline between skylake and cascadelake, cascadelake is selected as baseline. [rhel-8.6.0.z]
• BZ - 2093415 - Virt-v2v can't convert rhel8.6 guest from VMware on rhel8.6 [rhel-8.6.0.z]

CVE

• CVE-2021-4206
• CVE-2021-4207
• CVE-2022-26353
• CVE-2022-26354

参考

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