Alerts This Week
Warning Icon 1 727
Alerts This Week
Warning Icon 1 727

RedHat: RHSA-2022-5002-01 Moderate: Buffer Overflow And Memory Leak

red hat
Calendar Grey June 13, 2022
Dist Redhat Esm H88
A bulletin outlining the security implications and enhancements concerning RedHat's Advanced Virtualization components. Discover further details.
An update for the virt:av and virt-devel:av modules is now available for Red Hat Enterprise Linux Advanced Virtualization 8.4 Extended Update Support

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

Summary

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: 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):
* Remove '\n' from vhostuser ifname [rhel-av-8.4.z] (BZ#2077923)
* When doing a cpu-baseline between skylake and cascadelake, cascadelake is selected as baseline. (BZ#2084031)

Topics%20covered

Topics Covered

security advisory moderate Red Hat buffer overflow memory leak Advanced Virtualization

References

https://access.redhat.com/security/cve/CVE-2021-4206 https://access.redhat.com/security/cve/CVE-2021-4207 https://access.redhat.com/security/cve/CVE-2022-26353 https://access.redhat.com/security/cve/CVE-2022-26354 https://access.redhat.com/security/updates/classification#moderate

Package List

Advanced Virtualization for RHEL 8.4.0.EUS:
Source: SLOF-20200717-1.gite18ddad8.module+el8.4.0+8855+a9e237a9.src.rpm SLOF-20200717-1.gite18ddad8.module+el8.4.0+8855+a9e237a9.src.rpm hivex-1.3.18-21.module+el8.4.0+11609+2eba841a.src.rpm libguestfs-1.44.0-2.module+el8.4.0+10146+75917d2f.src.rpm libguestfs-winsupport-8.2-2.module+el8.4.0+12717+0b0da9ad.src.rpm libiscsi-1.18.0-8.module+el8.4.0+8855+a9e237a9.src.rpm libnbd-1.6.0-5.module+el8.4.0+14155+dec4a5c7.src.rpm libtpms-0.7.4-4.20201106git2452a24dab.module+el8.4.0+10596+32ba7df3.src.rpm libvirt-7.0.0-14.8.module+el8.4.0+15255+f7eff4dd.src.rpm libvirt-dbus-1.3.0-2.module+el8.4.0+8855+a9e237a9.src.rpm libvirt-python-7.0.0-1.module+el8.4.0+9469+2eaf72bc.src.rpm nbdkit-1.24.0-1.module+el8.4.0+9341+96cf2672.src.rpm netcf-0.2.8-12.module+el8.4.0+8855+a9e237a9.src.rpm perl-Sys-Virt-7.0.0-1.module+el8.4.0+9469+2eaf72bc.src.rpm python-pyvmomi-6.7.1-7.module+el8.4.0+8855+a9e237a9.src.rpm qemu-kvm-5.2.0-16.module+el8.4.0+15200+eac37ce4.17.src.rpm seabios-1.14.0-1.module+el8.4.0+8855+a9e237a9.src.rpm seabios-1.14.0-1.module+el8.4.0+8855+a9e237a9.src.rpm sgabios-0.20170427git-3.module+el8.4.0+8855+a9e237a9.src.rpm sgabios-0.20170427git-3.module+el8.4.0+8855+a9e237a9.src.rpm supermin-5.2.1-1.module+el8.4.0+9751+d56db353.src.rpm

Read the Full Advisory


Advisory ID: RHSA-2022:5002-01
Product: Advanced Virtualization
Advisory URL: Issue date: 2022-06-13

Topic

An update for the virt:av and virt-devel:av modules is now available forRed Hat Enterprise Linux Advanced Virtualization 8.4 Extended UpdateSupport.Red Hat Product Security has rated this update as having a security impactof Moderate. A Common Vulnerability Scoring System (CVSS) base score, whichgives a detailed severity rating, is available for each vulnerability fromthe CVE link(s) in the References section.

Topics%20covered

Topics Covered

security advisory moderate Red Hat buffer overflow memory leak Advanced Virtualization

Relevant Releases Architectures

Advanced Virtualization for RHEL 8.4.0.EUS - aarch64, noarch, ppc64le, s390x, x86_64

Bugs Fixed

2036966 - CVE-2021-4207 QEMU: QXL: double fetch in qxl_cursor() can lead to heap buffer overflow

2036998 - CVE-2021-4206 QEMU: QXL: integer overflow in cursor_alloc() can lead to heap buffer overflow

2063197 - CVE-2022-26353 QEMU: virtio-net: map leaking on error during receive

2063257 - CVE-2022-26354 QEMU: vhost-vsock: missing virtqueue detach on error can lead to memory leak

2077923 - Remove '\n' from vhostuser ifname [rhel-av-8.4.z]

2084031 - When doing a cpu-baseline between skylake and cascadelake, cascadelake is selected as baseline. [rhel-8.4.0.z]

Get the latest News and Insights

Get the latest Linux and open source security news straight to your inbox.

Your message here