Skip to content
OpenAdvisories
Medium ALSA-2021:1762 10 CVEs

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

Published May 18, 2021 · Updated Nov 2, 2026

Summary

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):

* 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 AlmaLinux Release Notes linked from the References section.

Fixed packages 69

ReleasePackageFixed in
AlmaLinux · 8 hivex 1.3.18-20.module_el8.3.0+2048+e7a0a3ea
AlmaLinux · 8 hivex-devel 1.3.18-20.module_el8.3.0+2048+e7a0a3ea
AlmaLinux · 8 libguestfs-winsupport 8.2-1.module_el8.5.0+2608+72063365
AlmaLinux · 8 libguestfs-winsupport 8.2-1.module_el8.3.0+2048+e7a0a3ea
AlmaLinux · 8 libiscsi 1.18.0-8.module_el8.6.0+2880+7d9e3703
AlmaLinux · 8 libiscsi 1.18.0-8.module_el8.5.0+2608+72063365
AlmaLinux · 8 libiscsi 1.18.0-8.module_el8.3.0+2048+e7a0a3ea
AlmaLinux · 8 libiscsi-devel 1.18.0-8.module_el8.6.0+2880+7d9e3703
AlmaLinux · 8 libiscsi-devel 1.18.0-8.module_el8.3.0+2048+e7a0a3ea
AlmaLinux · 8 libiscsi-devel 1.18.0-8.module_el8.5.0+2608+72063365
AlmaLinux · 8 libiscsi-utils 1.18.0-8.module_el8.3.0+2048+e7a0a3ea
AlmaLinux · 8 libiscsi-utils 1.18.0-8.module_el8.6.0+2880+7d9e3703
AlmaLinux · 8 libiscsi-utils 1.18.0-8.module_el8.5.0+2608+72063365
AlmaLinux · 8 libnbd 1.2.2-1.module_el8.5.0+2608+72063365
AlmaLinux · 8 libnbd 1.2.2-1.module_el8.3.0+2048+e7a0a3ea
AlmaLinux · 8 libnbd-devel 1.2.2-1.module_el8.3.0+2048+e7a0a3ea
AlmaLinux · 8 libnbd-devel 1.2.2-1.module_el8.5.0+2608+72063365
AlmaLinux · 8 libvirt-dbus 1.3.0-2.module_el8.6.0+2880+7d9e3703
AlmaLinux · 8 libvirt-dbus 1.3.0-2.module_el8.3.0+2048+e7a0a3ea
AlmaLinux · 8 libvirt-dbus 1.3.0-2.module_el8.5.0+2608+72063365
AlmaLinux · 8 nbdfuse 1.2.2-1.module_el8.3.0+2048+e7a0a3ea
AlmaLinux · 8 nbdfuse 1.2.2-1.module_el8.5.0+2608+72063365
AlmaLinux · 8 nbdkit 1.16.2-4.module_el8.5.0+2608+72063365
AlmaLinux · 8 nbdkit-bash-completion 1.16.2-4.module_el8.5.0+2608+72063365
AlmaLinux · 8 nbdkit-basic-filters 1.16.2-4.module_el8.5.0+2608+72063365
AlmaLinux · 8 nbdkit-basic-plugins 1.16.2-4.module_el8.5.0+2608+72063365
AlmaLinux · 8 nbdkit-curl-plugin 1.16.2-4.module_el8.5.0+2608+72063365
AlmaLinux · 8 nbdkit-devel 1.16.2-4.module_el8.5.0+2608+72063365
AlmaLinux · 8 nbdkit-example-plugins 1.16.2-4.module_el8.5.0+2608+72063365
AlmaLinux · 8 nbdkit-gzip-plugin 1.16.2-4.module_el8.5.0+2608+72063365
AlmaLinux · 8 nbdkit-linuxdisk-plugin 1.16.2-4.module_el8.5.0+2608+72063365
AlmaLinux · 8 nbdkit-python-plugin 1.16.2-4.module_el8.5.0+2608+72063365
AlmaLinux · 8 nbdkit-server 1.16.2-4.module_el8.5.0+2608+72063365
AlmaLinux · 8 nbdkit-ssh-plugin 1.16.2-4.module_el8.5.0+2608+72063365
AlmaLinux · 8 nbdkit-vddk-plugin 1.16.2-4.module_el8.5.0+2608+72063365
AlmaLinux · 8 nbdkit-xz-filter 1.16.2-4.module_el8.5.0+2608+72063365
AlmaLinux · 8 netcf 0.2.8-12.module_el8.5.0+2608+72063365
AlmaLinux · 8 netcf 0.2.8-12.module_el8.6.0+2880+7d9e3703
AlmaLinux · 8 netcf 0.2.8-12.module_el8.3.0+2048+e7a0a3ea
AlmaLinux · 8 netcf-devel 0.2.8-12.module_el8.3.0+2048+e7a0a3ea
AlmaLinux · 8 netcf-devel 0.2.8-12.module_el8.5.0+2608+72063365
AlmaLinux · 8 netcf-devel 0.2.8-12.module_el8.6.0+2880+7d9e3703
AlmaLinux · 8 netcf-libs 0.2.8-12.module_el8.6.0+2880+7d9e3703
AlmaLinux · 8 netcf-libs 0.2.8-12.module_el8.5.0+2608+72063365
AlmaLinux · 8 netcf-libs 0.2.8-12.module_el8.3.0+2048+e7a0a3ea
AlmaLinux · 8 ocaml-hivex 1.3.18-20.module_el8.3.0+2048+e7a0a3ea
AlmaLinux · 8 ocaml-hivex-devel 1.3.18-20.module_el8.3.0+2048+e7a0a3ea
AlmaLinux · 8 ocaml-libguestfs 1:1.40.2-27.module_el8.4.0+2358+630e803b.alma
AlmaLinux · 8 ocaml-libguestfs-devel 1:1.40.2-27.module_el8.4.0+2358+630e803b.alma
AlmaLinux · 8 ocaml-libnbd 1.2.2-1.module_el8.3.0+2048+e7a0a3ea
AlmaLinux · 8 ocaml-libnbd-devel 1.2.2-1.module_el8.3.0+2048+e7a0a3ea
AlmaLinux · 8 perl-hivex 1.3.18-20.module_el8.3.0+2048+e7a0a3ea
AlmaLinux · 8 perl-Sys-Virt 6.0.0-1.module_el8.5.0+2608+72063365
AlmaLinux · 8 perl-Sys-Virt 6.0.0-1.module_el8.3.0+2048+e7a0a3ea
AlmaLinux · 8 python3-hivex 1.3.18-20.module_el8.3.0+2048+e7a0a3ea
AlmaLinux · 8 python3-libnbd 1.2.2-1.module_el8.5.0+2608+72063365
AlmaLinux · 8 python3-libnbd 1.2.2-1.module_el8.3.0+2048+e7a0a3ea
AlmaLinux · 8 python3-libvirt 6.0.0-1.module_el8.3.0+2048+e7a0a3ea
AlmaLinux · 8 python3-libvirt 6.0.0-1.module_el8.5.0+2608+72063365
AlmaLinux · 8 ruby-hivex 1.3.18-20.module_el8.3.0+2048+e7a0a3ea
AlmaLinux · 8 seabios 1.13.0-2.module_el8.5.0+2608+72063365
AlmaLinux · 8 seabios-bin 1.13.0-2.module_el8.5.0+2608+72063365
AlmaLinux · 8 seavgabios-bin 1.13.0-2.module_el8.5.0+2608+72063365
AlmaLinux · 8 sgabios 1:0.20170427git-3.module_el8.5.0+2608+72063365
AlmaLinux · 8 sgabios 1:0.20170427git-3.module_el8.3.0+2048+e7a0a3ea
AlmaLinux · 8 sgabios-bin 1:0.20170427git-3.module_el8.5.0+2608+72063365
AlmaLinux · 8 sgabios-bin 1:0.20170427git-3.module_el8.6.0+2880+7d9e3703
AlmaLinux · 8 supermin 5.1.19-10.module_el8.5.0+2608+72063365
AlmaLinux · 8 supermin-devel 5.1.19-10.module_el8.5.0+2608+72063365

Vulnerabilities 10

References

  • report
    https://bugzilla.redhat.com/1384241
  • report
    https://bugzilla.redhat.com/1798463
  • report
    https://bugzilla.redhat.com/1828952
  • report
    https://bugzilla.redhat.com/1834281
  • report
    https://bugzilla.redhat.com/1837495
  • report
    https://bugzilla.redhat.com/1843852
  • report
    https://bugzilla.redhat.com/1846975
  • report
    https://bugzilla.redhat.com/1850680
  • report
    https://bugzilla.redhat.com/1859494
  • report
    https://bugzilla.redhat.com/1860283
  • report
    https://bugzilla.redhat.com/1872854
  • report
    https://bugzilla.redhat.com/1874304
  • report
    https://bugzilla.redhat.com/1874780
  • report
    https://bugzilla.redhat.com/1876297
  • report
    https://bugzilla.redhat.com/1876742
  • report
    https://bugzilla.redhat.com/1880418
  • report
    https://bugzilla.redhat.com/1880546
  • report
    https://bugzilla.redhat.com/1881037
  • report
    https://bugzilla.redhat.com/1884531
  • report
    https://bugzilla.redhat.com/1893895
  • report
    https://bugzilla.redhat.com/1898579
  • report
    https://bugzilla.redhat.com/1901837
  • report
    https://bugzilla.redhat.com/1902231
  • report
    https://bugzilla.redhat.com/1902651
  • report
    https://bugzilla.redhat.com/1902960
  • report
    https://bugzilla.redhat.com/1903064
  • report
    https://bugzilla.redhat.com/1910220
  • report
    https://bugzilla.redhat.com/1910267
  • report
    https://bugzilla.redhat.com/1910326
  • report
    https://bugzilla.redhat.com/1912765
  • report
    https://bugzilla.redhat.com/1917446
  • report
    https://bugzilla.redhat.com/1918708
  • advisory
    https://errata.almalinux.org/8/ALSA-2021-1762.html
  • report
    https://vulners.com/cve/CVE-2020-11947
  • report
    https://vulners.com/cve/CVE-2020-16092
  • report
    https://vulners.com/cve/CVE-2020-25637
  • report
    https://vulners.com/cve/CVE-2020-25707
  • report
    https://vulners.com/cve/CVE-2020-25723
  • report
    https://vulners.com/cve/CVE-2020-27821