{"schema_version": "1.7.0", "id": "RLSA-2026:10739", "modified": "2026-04-28T00:09:00.545714Z", "published": "2026-04-28T00:03:41.435121Z", "upstream": ["CVE-2026-33999", "CVE-2026-34001", "CVE-2026-34003", "CVE-2026-34352"], "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\n* xorg: xwayland: X.Org X server: Use-after-free vulnerability leads to server crash and potential memory corruption (CVE-2026-34001)\n\n* xorg: xwayland: X.Org X server: Information exposure and denial of service via out-of-bounds memory access (CVE-2026-34003)\n\n* TigerVNC: x0vncserver: TigerVNC x0vncserver: Information disclosure, data manipulation, and denial of service via incorrect permissions (CVE-2026-34352)\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.", "severity": [{"type": "CVSS_V3", "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"}], "affected": [{"package": {"ecosystem": "Rocky Linux:9", "name": "tigervnc", "purl": "pkg:rpm/rocky-linux/tigervnc?distro=rocky-linux-9&epoch=0"}, "ranges": [{"type": "ECOSYSTEM", "events": [{"introduced": "0"}, {"fixed": "0:1.15.0-6.el9_7.1"}], "database_specific": {"yum_repository": "AppStream"}}]}], "references": [{"type": "ADVISORY", "url": "https://errata.rockylinux.org/RLSA-2026:10739"}, {"type": "REPORT", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2451106"}, {"type": "REPORT", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2451109"}, {"type": "REPORT", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2451113"}, {"type": "REPORT", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2452022"}], "credits": [{"name": "Rocky Enterprise Software Foundation"}, {"name": "Red Hat"}]}