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ALSA-2021:1762 Not scored

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

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.

Exploit probability Not scored
Published May 18, 2021
Required by Not available
Last source change February 4, 2026

02 / AFFECTED SOFTWARE

Affected packages

AlmaLinux:8 nbdkit-basic-plugins
AlmaLinux:8 ocaml-libguestfs-devel
AlmaLinux:8 nbdkit-xz-filter
AlmaLinux:8 python3-libnbd
AlmaLinux:8 sgabios
AlmaLinux:8 ruby-hivex
AlmaLinux:8 sgabios-bin
AlmaLinux:8 libguestfs-winsupport
AlmaLinux:8 nbdkit-example-plugins
AlmaLinux:8 supermin
AlmaLinux:8 python3-libvirt
AlmaLinux:8 perl-hivex
AlmaLinux:8 netcf-libs
AlmaLinux:8 perl-Sys-Virt
AlmaLinux:8 ocaml-libguestfs
AlmaLinux:8 seabios-bin
AlmaLinux:8 nbdkit-ssh-plugin
AlmaLinux:8 nbdkit-basic-filters
AlmaLinux:8 nbdkit-bash-completion
AlmaLinux:8 libiscsi
AlmaLinux:8 python3-hivex
AlmaLinux:8 ocaml-hivex-devel
AlmaLinux:8 ocaml-libnbd
AlmaLinux:8 nbdkit
AlmaLinux:8 nbdkit-devel
AlmaLinux:8 nbdfuse
AlmaLinux:8 nbdkit-python-plugin
AlmaLinux:8 libvirt-dbus
AlmaLinux:8 nbdkit-gzip-plugin
AlmaLinux:8 netcf
AlmaLinux:8 hivex-devel
AlmaLinux:8 nbdkit-vddk-plugin
AlmaLinux:8 libnbd
AlmaLinux:8 hivex
AlmaLinux:8 ocaml-hivex
AlmaLinux:8 nbdkit-server
AlmaLinux:8 libnbd-devel
AlmaLinux:8 seabios
AlmaLinux:8 libiscsi-devel
AlmaLinux:8 nbdkit-curl-plugin
AlmaLinux:8 libiscsi-utils
AlmaLinux:8 supermin-devel
AlmaLinux:8 ocaml-libnbd-devel
AlmaLinux:8 netcf-devel
AlmaLinux:8 nbdkit-linuxdisk-plugin
AlmaLinux:8 seavgabios-bin

03 / CONNECTIONS

Connected vulnerabilities

04 / EVIDENCE

Source records

Open Source Vulnerabilities ALSA-2021:1762

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.

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05 / REFERENCES

Further evidence