{"id":"ALSA-2026:10739","summary":"Important: tigervnc security update","details":"Virtual Network Computing (VNC) is a remote display system which allows users to view a computing desktop environment not only on the machine where it is running, but from anywhere on the Internet and from a wide variety of machine architectures. TigerVNC is a suite of VNC servers and clients.  \n\nSecurity Fix(es):  \n\n  * xorg: xwayland: X.Org X server: Denial of Service via integer underflow in XKB compatibility map handling (CVE-2026-33999)\n  * xorg: xwayland: X.Org X server: Use-after-free vulnerability leads to server crash and potential memory corruption (CVE-2026-34001)\n  * xorg: xwayland: X.Org X server: Information exposure and denial of service via out-of-bounds memory access (CVE-2026-34003)\n  * TigerVNC: x0vncserver: TigerVNC x0vncserver: Information disclosure, data manipulation, and denial of service via incorrect permissions (CVE-2026-34352)\n\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","modified":"2026-04-30T14:32:36.910637Z","published":"2026-04-27T00:00:00Z","related":["CVE-2026-33999","CVE-2026-34001","CVE-2026-34003","CVE-2026-34352"],"references":[{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:10739"},{"type":"REPORT","url":"https://access.redhat.com/security/cve/CVE-2026-33999"},{"type":"REPORT","url":"https://access.redhat.com/security/cve/CVE-2026-34001"},{"type":"REPORT","url":"https://access.redhat.com/security/cve/CVE-2026-34003"},{"type":"REPORT","url":"https://access.redhat.com/security/cve/CVE-2026-34352"},{"type":"REPORT","url":"https://bugzilla.redhat.com/2451106"},{"type":"REPORT","url":"https://bugzilla.redhat.com/2451109"},{"type":"REPORT","url":"https://bugzilla.redhat.com/2451113"},{"type":"REPORT","url":"https://bugzilla.redhat.com/2452022"},{"type":"ADVISORY","url":"https://errata.almalinux.org/9/ALSA-2026-10739.html"}],"affected":[{"package":{"name":"tigervnc","ecosystem":"AlmaLinux:9","purl":"pkg:rpm/almalinux/tigervnc"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.15.0-6.el9_7.1"}]}],"database_specific":{"source":"https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux9/ALSA-2026:10739.json"}},{"package":{"name":"tigervnc-icons","ecosystem":"AlmaLinux:9","purl":"pkg:rpm/almalinux/tigervnc-icons"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.15.0-6.el9_7.1"}]}],"database_specific":{"source":"https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux9/ALSA-2026:10739.json"}},{"package":{"name":"tigervnc-license","ecosystem":"AlmaLinux:9","purl":"pkg:rpm/almalinux/tigervnc-license"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.15.0-6.el9_7.1"}]}],"database_specific":{"source":"https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux9/ALSA-2026:10739.json"}},{"package":{"name":"tigervnc-selinux","ecosystem":"AlmaLinux:9","purl":"pkg:rpm/almalinux/tigervnc-selinux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.15.0-6.el9_7.1"}]}],"database_specific":{"source":"https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux9/ALSA-2026:10739.json"}},{"package":{"name":"tigervnc-server","ecosystem":"AlmaLinux:9","purl":"pkg:rpm/almalinux/tigervnc-server"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.15.0-6.el9_7.1"}]}],"database_specific":{"source":"https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux9/ALSA-2026:10739.json"}},{"package":{"name":"tigervnc-server-minimal","ecosystem":"AlmaLinux:9","purl":"pkg:rpm/almalinux/tigervnc-server-minimal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.15.0-6.el9_7.1"}]}],"database_specific":{"source":"https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux9/ALSA-2026:10739.json"}},{"package":{"name":"tigervnc-server-module","ecosystem":"AlmaLinux:9","purl":"pkg:rpm/almalinux/tigervnc-server-module"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.15.0-6.el9_7.1"}]}],"database_specific":{"source":"https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux9/ALSA-2026:10739.json"}}],"schema_version":"1.7.5"}