{"id":"RLSA-2022:5821","summary":"Moderate: virt:rhel and virt-devel:rhel security, bug fix, and enhancement update","details":"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.\n\nSecurity Fix(es):\n\n* QEMU: QXL: integer overflow in cursor_alloc() can lead to heap buffer overflow (CVE-2021-4206)\n\n* QEMU: QXL: double fetch in qxl_cursor() can lead to heap buffer overflow (CVE-2021-4207)\n\n* QEMU: virtio-net: map leaking on error during receive (CVE-2022-26353)\n\n* QEMU: vhost-vsock: missing virtqueue detach on error can lead to memory leak (CVE-2022-26354)\n\nFor 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.\n\nBug Fix(es):\n\n* Rocky Linux 9.0 guest with vsock device migration failed from Rocky Linux 9.0 \u003e Rocky Linux 8.6 (BZ#2071103)\n\n* Fail to rebuild the reference count tables of qcow2 image on host block devices (e.g. LVs) (BZ#2072242)\n\n* Remove upstream-only devices from the qemu-kvm binary (BZ#2077928)\n\n* When doing a cpu-baseline between skylake and cascadelake, cascadelake is selected as baseline. (BZ#2084030)\n\n* Virt-v2v can't convert Rocky Linux8.6 guest from VMware on Rocky Linux8.6 (BZ#2093415)\n\nEnhancement(s):\n\n* Allow memory prealloc from multiple threads (BZ#2075569)","modified":"2026-02-05T15:00:07.768836Z","published":"2022-08-02T07:04:52Z","upstream":["CVE-2021-4206","CVE-2021-4207","CVE-2022-26353","CVE-2022-26354"],"references":[{"type":"ADVISORY","url":"https://errata.rockylinux.org/RLSA-2022:5821"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2036966"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2036998"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2063197"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2063257"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2072242"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2075569"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2084030"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2093415"}],"affected":[{"package":{"name":"hivex","ecosystem":"Rocky 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