{"id":"openSUSE-SU-2026:21738-1","summary":"Security update for libvirt","details":"This update for libvirt fixes the following issues:\n\n- CVE-2026-18917: integer overflow in `NodeGetFreePages` RPC handler leads to heap buffer overflow and allows for\n  possible local privilege escalation (bsc#1275863).\n- CVE-2026-61477: newline injection in network XML DNS TXT/SRV fields allows for `dnsmasq` configuration directive\n  injection and can lead to arbitrary code execution as root (bsc#1274576).\n- CVE-2026-63622: symlink-following in `virFileChownFiles()` allows `swtpm` user to trick the root-level `libvirt`\n  daemon into changing the ownership of an arbitrary file and can lead to privilege escalation (bsc#1275264).\n- CVE-2026-63623: newly created volume images are temporarily world-readable during clone/convert operations, which can\n  lead to sensitive information disclosure (bsc#1275265).\n- CVE-2026-77159: root `chown()` on `swtpm` logfile follows symlinks and allows for root-owned file ownership changes,\n  which can lead to privilege escalation (bsc#1274946).\n","modified":"2026-09-09T18:23:24.259918189Z","published":"2026-09-02T09:43:39Z","related":["CVE-2026-18917","CVE-2026-61477","CVE-2026-63622","CVE-2026-63623","CVE-2026-77159"],"upstream":["CVE-2026-18917","CVE-2026-61477","CVE-2026-63622","CVE-2026-63623","CVE-2026-77159"],"references":[{"type":"ADVISORY"},{"type":"REPORT","url":"https://bugzilla.suse.com/1274576"},{"type":"REPORT","url":"https://bugzilla.suse.com/1274946"},{"type":"REPORT","url":"https://bugzilla.suse.com/1275264"},{"type":"REPORT","url":"https://bugzilla.suse.com/1275265"},{"type":"REPORT","url":"https://bugzilla.suse.com/1275863"},{"type":"WEB","url":"https://www.suse.com/security/cve/CVE-2026-18917"},{"type":"WEB","url":"https://www.suse.com/security/cve/CVE-2026-61477"},{"type":"WEB","url":"https://www.suse.com/security/cve/CVE-2026-63622"},{"type":"WEB","url":"https://www.suse.com/security/cve/CVE-2026-63623"},{"type":"WEB","url":"https://www.suse.com/security/cve/CVE-2026-77159"}],"affected":[{"package":{"name":"libvirt","ecosystem":"openSUSE:Leap 16.0","purl":"pkg:rpm/opensuse/libvirt&distro=openSUSE%20Leap%2016.0"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"11.4.0-160000.5.1"}]}],"ecosystem_specific":{"binaries":[{"libvirt-client":"11.4.0-160000.5.1","libvirt-daemon-config-network":"11.4.0-160000.5.1","wireshark-plugin-libvirt":"11.4.0-160000.5.1","libvirt-daemon-driver-storage":"11.4.0-160000.5.1","libvirt-daemon-lock":"11.4.0-160000.5.1","libvirt-doc":"11.4.0-160000.5.1","libvirt-libs":"11.4.0-160000.5.1","libvirt-ssh-proxy":"11.4.0-160000.5.1","libvirt-daemon-proxy":"11.4.0-160000.5.1","libvirt-daemon":"11.4.0-160000.5.1","libvirt-daemon-common":"11.4.0-160000.5.1","libvirt-daemon-driver-nwfilter":"11.4.0-160000.5.1","libvirt-daemon-hooks":"11.4.0-160000.5.1","libvirt-daemon-driver-secret":"11.4.0-160000.5.1","libvirt-daemon-driver-storage-core":"11.4.0-160000.5.1","libvirt-nss":"11.4.0-160000.5.1","libvirt-daemon-driver-qemu":"11.4.0-160000.5.1","libvirt":"11.4.0-160000.5.1","libvirt-daemon-plugin-lockd":"11.4.0-160000.5.1","libvirt-daemon-driver-network":"11.4.0-160000.5.1","libvirt-client-qemu":"11.4.0-160000.5.1","libvirt-devel":"11.4.0-160000.5.1","libvirt-daemon-driver-storage-mpath":"11.4.0-160000.5.1","libvirt-daemon-qemu":"11.4.0-160000.5.1","libvirt-daemon-driver-storage-logical":"11.4.0-160000.5.1","libvirt-daemon-driver-storage-iscsi":"11.4.0-160000.5.1","libvirt-daemon-driver-nodedev":"11.4.0-160000.5.1","libvirt-daemon-driver-storage-iscsi-direct":"11.4.0-160000.5.1","libvirt-daemon-driver-storage-disk":"11.4.0-160000.5.1","libvirt-daemon-log":"11.4.0-160000.5.1","libvirt-daemon-config-nwfilter":"11.4.0-160000.5.1","libvirt-daemon-driver-storage-scsi":"11.4.0-160000.5.1"}]},"database_specific":{"source":"https://ftp.suse.com/pub/projects/security/osv/openSUSE-SU-2026:21738-1.json"}}],"schema_version":"1.9.0"}