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OpenAdvisories
Medium RLSA-2020:4676 6 CVEs

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

Published Nov 3, 2020 · Updated Feb 5, 2026

Ecosystem: Rocky Linux

Summary

Kernel-based Virtual Machine (KVM) offers a full virtualization solution for Linux on numerous hardware platforms. The virt:Rocky Linux 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.

The following packages have been upgraded to a later upstream version: hivex (1.3.18), libguestfs (1.40.2), libguestfs-winsupport (8.2), libvirt (6.0.0), libvirt-dbus (1.3.0), libvirt-python (6.0.0), nbdkit (1.16.2), perl-Sys-Virt (6.0.0), qemu-kvm (4.2.0), seabios (1.13.0), SLOF (20191022). (BZ#1810193, BZ#1844296)

Security Fix(es):

* libvirt: leak of /dev/mapper/control into QEMU guests (CVE-2020-14339)

* QEMU: Slirp: use-after-free during packet reassembly (CVE-2019-15890)

* libvirt: Potential DoS by holding a monitor job while querying QEMU guest-agent (CVE-2019-20485)

* QEMU: slirp: use-after-free in ip_reass() function in ip_input.c (CVE-2020-1983)

* libvirt: Potential denial of service via active pool without target path (CVE-2020-10703)

* libvirt: leak of sensitive cookie information via dumpxml (CVE-2020-14301)

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.

Additional Changes:

For detailed information on changes in this release, see the Rocky Linux 8.3 Release Notes linked from the References section.

Fixed packages 20

ReleasePackageFixed in
Rocky Linux · 8 hivex 0:1.3.18-20.module+el8.4.0+534+4680a14e
Rocky Linux · 8 libguestfs-winsupport 0:8.2-1.module+el8.4.0+534+4680a14e
Rocky Linux · 8 libiscsi 0:1.18.0-8.module+el8.7.0+1084+97b81f61
Rocky Linux · 8 libiscsi 0:1.18.0-8.module+el8.4.0+534+4680a14e
Rocky Linux · 8 libiscsi 0:1.18.0-8.module+el8.6.0+847+b490afdd
Rocky Linux · 8 libnbd 0:1.2.2-1.module+el8.4.0+534+4680a14e
Rocky Linux · 8 libvirt-dbus 0:1.3.0-2.module+el8.7.0+1084+97b81f61
Rocky Linux · 8 libvirt-dbus 0:1.3.0-2.module+el8.4.0+534+4680a14e
Rocky Linux · 8 libvirt-dbus 0:1.3.0-2.module+el8.6.0+847+b490afdd
Rocky Linux · 8 libvirt-python 0:6.0.0-1.module+el8.4.0+534+4680a14e
Rocky Linux · 8 nbdkit 0:1.16.2-4.module+el8.4.0+534+4680a14e
Rocky Linux · 8 netcf 0:0.2.8-12.module+el8.7.0+1084+97b81f61
Rocky Linux · 8 netcf 0:0.2.8-12.module+el8.4.0+534+4680a14e
Rocky Linux · 8 netcf 0:0.2.8-12.module+el8.6.0+847+b490afdd
Rocky Linux · 8 perl-Sys-Virt 0:6.0.0-1.module+el8.4.0+534+4680a14e
Rocky Linux · 8 seabios 0:1.13.0-2.module+el8.4.0+534+4680a14e
Rocky Linux · 8 sgabios 1:0.20170427git-3.module+el8.7.0+1084+97b81f61
Rocky Linux · 8 sgabios 1:0.20170427git-3.module+el8.4.0+534+4680a14e
Rocky Linux · 8 sgabios 1:0.20170427git-3.module+el8.6.0+847+b490afdd
Rocky Linux · 8 supermin 0:5.1.19-10.module+el8.4.0+534+4680a14e

Vulnerabilities 6

References

  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=1518042
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=1664324
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=1715039
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=1717394
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=1727865
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=1749716
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=1756946
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=1759849
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=1763191
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=1790189
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=1805998
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=1807057
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=1809740
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=1810193
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=1811539
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=1816650
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=1828681
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=1829825
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=1844296
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=1845459
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=1848640
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=1849997
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=1854380
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=1857779
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=1860069
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=1867847