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OpenAdvisories
Medium RLSA-2021:1762 10 CVEs

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

Published May 18, 2021 · 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.

Security Fix(es):

* libvirt: double free in qemuAgentGetInterfaces() in qemu_agent.c (CVE-2020-25637)

* QEMU: heap buffer overflow in msix_table_mmio_write() in hw/pci/msix.c (CVE-2020-27821)

* QEMU: ide: atapi: OOB access while processing read commands (CVE-2020-29443)

* QEMU: heap buffer overflow in iscsi_aio_ioctl_cb() in block/iscsi.c may lead to information disclosure (CVE-2020-11947)

* QEMU: reachable assertion failure in net_tx_pkt_add_raw_fragment() in hw/net/net_tx_pkt.c (CVE-2020-16092)

* QEMU: infinite loop in e1000e_write_packet_to_guest() in hw/net/e1000e_core.c (CVE-2020-25707)

* QEMU: assertion failure through usb_packet_unmap() in hw/usb/hcd-ehci.c (CVE-2020-25723)

* QEMU: e1000e: infinite loop scenario in case of null packet descriptor (CVE-2020-28916)

* QEMU: slirp: out-of-bounds access while processing ARP/NCSI packets (CVE-2020-29129, CVE-2020-29130)

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 8.4 Release Notes linked from the References section.

Fixed packages 23

ReleasePackageFixed in
Rocky Linux · 8 hivex 0:1.3.18-20.module+el8.4.0+534+4680a14e
Rocky Linux · 8 libguestfs 1:1.40.2-27.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 0:6.0.0-35.module+el8.4.0+534+4680a14e
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+el8.7.0+1084+97b81f61
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 qemu-kvm 5:4.2.0-48.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 10

References

  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=1384241
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    https://bugzilla.redhat.com/show_bug.cgi?id=1798463
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    https://bugzilla.redhat.com/show_bug.cgi?id=1828952
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    https://bugzilla.redhat.com/show_bug.cgi?id=1834281
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    https://bugzilla.redhat.com/show_bug.cgi?id=1837495
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    https://bugzilla.redhat.com/show_bug.cgi?id=1843852
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    https://bugzilla.redhat.com/show_bug.cgi?id=1846975
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    https://bugzilla.redhat.com/show_bug.cgi?id=1850680
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    https://bugzilla.redhat.com/show_bug.cgi?id=1859494
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    https://bugzilla.redhat.com/show_bug.cgi?id=1860283
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    https://bugzilla.redhat.com/show_bug.cgi?id=1872854
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    https://bugzilla.redhat.com/show_bug.cgi?id=1874304
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    https://bugzilla.redhat.com/show_bug.cgi?id=1874780
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    https://bugzilla.redhat.com/show_bug.cgi?id=1876297
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    https://bugzilla.redhat.com/show_bug.cgi?id=1876742
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    https://bugzilla.redhat.com/show_bug.cgi?id=1880418
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    https://bugzilla.redhat.com/show_bug.cgi?id=1880546
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    https://bugzilla.redhat.com/show_bug.cgi?id=1881037
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    https://bugzilla.redhat.com/show_bug.cgi?id=1884531
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    https://bugzilla.redhat.com/show_bug.cgi?id=1893895
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    https://bugzilla.redhat.com/show_bug.cgi?id=1898579
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    https://bugzilla.redhat.com/show_bug.cgi?id=1901837
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    https://bugzilla.redhat.com/show_bug.cgi?id=1902231
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    https://bugzilla.redhat.com/show_bug.cgi?id=1902651
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    https://bugzilla.redhat.com/show_bug.cgi?id=1902960
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    https://bugzilla.redhat.com/show_bug.cgi?id=1903064
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    https://bugzilla.redhat.com/show_bug.cgi?id=1910220
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    https://bugzilla.redhat.com/show_bug.cgi?id=1910267
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    https://bugzilla.redhat.com/show_bug.cgi?id=1910326
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    https://bugzilla.redhat.com/show_bug.cgi?id=1912765
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    https://bugzilla.redhat.com/show_bug.cgi?id=1917446
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    https://bugzilla.redhat.com/show_bug.cgi?id=1918708