{"schema_version": "1.7.0", "id": "RLSA-2026:85191", "modified": "2026-10-20T12:15:02.084567Z", "published": "2026-10-20T12:10:14.939262Z", "upstream": ["CVE-2026-88812", "CVE-2026-93516", "CVE-2026-93517", "CVE-2026-93518", "CVE-2026-93519", "CVE-2026-93520", "CVE-2026-93521", "CVE-2026-93522", "CVE-2026-93523"], "summary": "Important: xorg-x11-server-Xwayland security update", "details": "Xwayland is an X server for running X clients under Wayland.\n\nSecurity Fix(es):\n\n* xorg-x11-server: xorg-x11-server: Arbitrary code execution via use-after-free in passive grab handling (CVE-2026-93516)\n\n* xorg-x11-server: xorg-x11-server: Privilege escalation via crafted RandR provider property requests (CVE-2026-93521)\n\n* xorg-x11-server: xwayland: xorg-x11-server: Arbitrary code execution via double-free in XKB geometry handling (CVE-2026-88812)\n\n* xorg-x11-server: xorg-x11-server: Out-of-bounds write via unvalidated modifier in ProcXIPassiveUngrabDevice (CVE-2026-93523)\n\n* xorg-x11-server: glamor: size tmp_bits buffer for source coordinate  range in upload_boxes (CVE-2026-93522)\n\n* xorg-x11-server: xorg-x11-server: arbitrary code execution via GLX RenderLarge heap-based buffer overflow (CVE-2026-93517)\n\n* xorg-x11-server: xorg-x11-server: arbitrary code execution via integer truncation during keyboard mapping resize (CVE-2026-93518)\n\n* xorg-x11-server: xorg-x11-server: Arbitrary code execution via buffer overflow in input_constrain_cursor() (CVE-2026-93519)\n\n* xorg-x11-server: xorg-x11-server: arbitrary code execution via out-of-bounds write in XKB keycode handling (CVE-2026-93520)\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:10", "name": "xorg-x11-server-Xwayland", "purl": "pkg:rpm/rocky-linux/xorg-x11-server-Xwayland?distro=rocky-linux-10&epoch=0"}, "ranges": [{"type": "ECOSYSTEM", "events": [{"introduced": "0"}, {"fixed": "0:24.1.9-4.el10_2.4"}], "database_specific": {"yum_repository": "AppStream"}}]}], "references": [{"type": "ADVISORY", "url": "https://errata.rockylinux.org/RLSA-2026:85191"}, {"type": "REPORT", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2545161"}, {"type": "REPORT", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2545164"}, {"type": "REPORT", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2545174"}, {"type": "REPORT", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2545177"}, {"type": "REPORT", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2545178"}, {"type": "REPORT", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2545246"}, {"type": "REPORT", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2545860"}, {"type": "REPORT", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2545887"}, {"type": "REPORT", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2545908"}, {"type": "ADVISORY", "url": "https://access.redhat.com/errata/RHSA-2026:85191"}], "credits": [{"name": "Rocky Enterprise Software Foundation"}, {"name": "Red Hat"}], "database_specific": {"license": "CC-BY-4.0", "license_url": "https://creativecommons.org/licenses/by/4.0/", "source_advisory": "RHSA-2026:85191"}}