{"schemaVersion":3,"id":"OPENSUSE-SU-2026:21738-1","aliases":[],"status":"published","duplicateOf":null,"title":null,"description":"Security update for libvirt\n\nThis 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).","dates":{"published":"2026-09-02T09:43:39.000Z","modified":"2026-09-09T18:23:13.514Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":null,"severity":"unknown","version":null,"versionLabel":null,"source":null,"vector":null,"computed":false,"selection":"none"},"metrics":[]},"epss":{"probability":null,"percentile":null,"severity":"unknown","asOf":null,"change":{"pp":null,"baselineDate":null,"baselineScore":null},"history":[],"last30":[]},"kev":{"state":"not-listed","entries":[],"listedCount":0,"totalCatalogs":3,"catalogs":[{"source":"cisa","label":"CISA","listed":false,"entry":null},{"source":"enisa","label":"ENISA","listed":false,"entry":null},{"source":"circl","label":"CIRCL","listed":false,"entry":null}]},"ransomware":{"state":"none-recorded","sources":[]},"exploits":[],"exploitCount":0,"weaknesses":[],"affected":[{"vendor":"opensuse","product":"libvirt&distro=openSUSE Leap 16.0","name":"libvirt","label":"libvirt&distro=openSUSE Leap 16.0","ecosystem":"openSUSE","cpePart":null,"purl":"pkg:rpm/opensuse/libvirt&distro=openSUSE Leap 16.0","purlType":"rpm","versions":[{"text":"< 11.4.0-160000.5.1","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 11.4.0-160000.5.1","eol":null,"hubHref":null}],"affectedCount":1,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://bugzilla.suse.com/1274576","label":"bugzilla.suse.com/1274576","hostname":"bugzilla.suse.com","tags":["REPORT"]},{"url":"https://bugzilla.suse.com/1274946","label":"bugzilla.suse.com/1274946","hostname":"bugzilla.suse.com","tags":["REPORT"]},{"url":"https://bugzilla.suse.com/1275264","label":"bugzilla.suse.com/1275264","hostname":"bugzilla.suse.com","tags":["REPORT"]},{"url":"https://bugzilla.suse.com/1275265","label":"bugzilla.suse.com/1275265","hostname":"bugzilla.suse.com","tags":["REPORT"]},{"url":"https://bugzilla.suse.com/1275863","label":"bugzilla.suse.com/1275863","hostname":"bugzilla.suse.com","tags":["REPORT"]},{"url":"https://www.suse.com/security/cve/CVE-2026-18917","label":"www.suse.com/security/cve/CVE-2026-18917","hostname":"www.suse.com","tags":["WEB"]},{"url":"https://www.suse.com/security/cve/CVE-2026-61477","label":"www.suse.com/security/cve/CVE-2026-61477","hostname":"www.suse.com","tags":["WEB"]},{"url":"https://www.suse.com/security/cve/CVE-2026-63622","label":"www.suse.com/security/cve/CVE-2026-63622","hostname":"www.suse.com","tags":["WEB"]},{"url":"https://www.suse.com/security/cve/CVE-2026-63623","label":"www.suse.com/security/cve/CVE-2026-63623","hostname":"www.suse.com","tags":["WEB"]},{"url":"https://www.suse.com/security/cve/CVE-2026-77159","label":"www.suse.com/security/cve/CVE-2026-77159","hostname":"www.suse.com","tags":["WEB"]}],"lineage":{"upstream":["CVE-2026-18917","CVE-2026-61477","CVE-2026-63622","CVE-2026-63623","CVE-2026-77159"],"downstream":[],"duplicates":[],"related":["CVE-2026-18917","CVE-2026-61477","CVE-2026-63622","CVE-2026-63623","CVE-2026-77159"]},"timeline":[{"kind":"published","date":"2026-09-02T09:43:39.000Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2026-09-09T18:23:13.514Z","label":"Last modified","detail":"Vulnerability information updated.","source":null}],"risk":{"score":0,"level":"minimal","profile":"Default","thresholds":{"critical":75,"high":50,"medium":25,"low":10}},"meta":{"dataAsOf":"2026-10-22T04:39:22.719Z","stale":false,"partial":false}}