# CVE-2026-93522: X.Org Server Glamor CopyArea Heap Buffer Overflow CVE-2026-93522 is fixed in 5 products on 1 platform, first by DEBIAN-CVE-2026-93522, released October 12, 2026. It is not reported as exploited. Patch Radar priority: High. - Web page: https://patchblox.com/security/cve/CVE-2026-93522 - Priority: High - CVSS: 7.8 (Important) - EPSS: 0.0020 - CISA KEV: not listed - Exploited (vendor report): no - Publicly disclosed: no - Published: Oct 7, 2026 - Weakness: Heap-based Buffer Overflow - Vendor advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-93522 ## Description Xwayland is an X server for running X clients under Wayland. Security Fix(es): * xorg-x11-server: xorg-x11-server: Arbitrary code execution via use-after-free in passive grab handling (CVE-2026-93516) * xorg-x11-server: xorg-x11-server: Privilege escalation via crafted RandR provider property requests (CVE-2026-93521) * xorg-x11-server: xwayland: xorg-x11-server: Arbitrary code execution via double-free in XKB geometry handling (CVE-2026-88812) * xorg-x11-server: xorg-x11-server: Out-of-bounds write via unvalidated modifier in ProcXIPassiveUngrabDevice (CVE-2026-93523) * xorg-x11-server: glamor: size tmp_bits buffer for source coordinate range in upload_boxes (CVE-2026-93522) * xorg-x11-server: xorg-x11-server: arbitrary code execution via GLX RenderLarge heap-based buffer overflow (CVE-2026-93517) * xorg-x11-server: xorg-x11-server: arbitrary code execution via integer truncation during keyboard mapping resize (CVE-2026-93518) * xorg-x11-server: xorg-x11-server: Arbitrary code execution via buffer overflow in input_constrain_cursor() (CVE-2026-93519) * xorg-x11-server: xorg-x11-server: arbitrary code execution via out-of-bounds write in XKB keycode handling (CVE-2026-93520) For 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. ## Where it's fixed | Platform | Product | Fixed in | Fix | Released | |---|---|---|---|---| | Linux | xorg-x11-server-Xwayland RHEL 10 | 24.1.9-4.el10_2.4 | [RHSA-2026:85191](https://patchblox.com/security/data/fix/linux/rhsa-2026-85191.md) | Oct 20, 2026 | | Linux | xorg-x11-server-Xwayland RHEL 9 | 0:24.1.9-4.el9_8.4 | [RHSA-2026:85193](https://patchblox.com/security/data/fix/linux/rhsa-2026-85193.md) | Oct 20, 2026 | | Linux | xorg-x11-server-Xwayland almalinux 10 | 24.1.9-4.el10_2.4 | [ALSA-2026:85191](https://patchblox.com/security/data/fix/linux/alsa-2026-85191.md) | Nov 7, 2026 | | Linux | xorg-x11-server-Xwayland almalinux 9 | 24.1.9-4.el9_8.4 | [ALSA-2026:85193](https://patchblox.com/security/data/fix/linux/alsa-2026-85193.md) | Nov 7, 2026 | | Linux | xorg-x11-server-Xwayland amzn 2023 | 24.1.3-1.amzn2023.0.7 | [ALAS2023-2026-3261](https://patchblox.com/security/data/fix/linux/alas2023-2026-3261.md) | Nov 7, 2026 | | Linux | xorg-x11-server-Xwayland ol 10 | 0:24.1.9-4.el10_2.4 | [ELSA-2026-85191](https://patchblox.com/security/data/fix/linux/elsa-2026-85191.md) | Nov 7, 2026 | | Linux | xorg-x11-server-Xwayland ol 9 | 0:24.1.9-4.el9_8.4 | [ELSA-2026-85193](https://patchblox.com/security/data/fix/linux/elsa-2026-85193.md) | Nov 7, 2026 | | Linux | xorg-x11-server-Xwayland rocky 10 | 0:24.1.9-4.el10_2.4 | [RLSA-2026:85191](https://patchblox.com/security/data/fix/linux/rlsa-2026-85191.md) | Nov 7, 2026 | | Linux | xorg-x11-server-Xwayland rocky 9 | 0:24.1.9-4.el9_8.4 | [RLSA-2026:85193](https://patchblox.com/security/data/fix/linux/rlsa-2026-85193.md) | Nov 7, 2026 | | Linux | xorg-x11-server-Xwayland-debuginfo amzn 2023 | 24.1.3-1.amzn2023.0.7 | [ALAS2023-2026-3261](https://patchblox.com/security/data/fix/linux/alas2023-2026-3261.md) | Nov 7, 2026 | | Linux | xorg-x11-server-Xwayland-debugsource amzn 2023 | 24.1.3-1.amzn2023.0.7 | [ALAS2023-2026-3261](https://patchblox.com/security/data/fix/linux/alas2023-2026-3261.md) | Nov 7, 2026 | | Linux | xorg-x11-server-Xwayland-devel RHEL 9 | 0:24.1.9-4.el9_8.4 | [RHSA-2026:85193](https://patchblox.com/security/data/fix/linux/rhsa-2026-85193.md) | Oct 20, 2026 | | Linux | xorg-x11-server-Xwayland-devel almalinux 10 | 24.1.9-4.el10_2.4 | [ALSA-2026:85191](https://patchblox.com/security/data/fix/linux/alsa-2026-85191.md) | Nov 7, 2026 | | Linux | xorg-x11-server-Xwayland-devel almalinux 9 | 24.1.9-4.el9_8.4 | [ALSA-2026:85193](https://patchblox.com/security/data/fix/linux/alsa-2026-85193.md) | Nov 7, 2026 | | Linux | xorg-x11-server-Xwayland-devel amzn 2023 | 24.1.3-1.amzn2023.0.7 | [ALAS2023-2026-3261](https://patchblox.com/security/data/fix/linux/alas2023-2026-3261.md) | Nov 7, 2026 | | Linux | xorg-x11-server-Xwayland-devel ol 10 | 0:24.1.9-4.el10_2.4 | [ELSA-2026-85191](https://patchblox.com/security/data/fix/linux/elsa-2026-85191.md) | Nov 7, 2026 | | Linux | xorg-x11-server-Xwayland-devel ol 9 | 0:24.1.9-4.el9_8.4 | [ELSA-2026-85193](https://patchblox.com/security/data/fix/linux/elsa-2026-85193.md) | Nov 7, 2026 | | Linux | xwayland Debian 14 | 2:24.1.14-1 | [DEBIAN-CVE-2026-93522](https://patchblox.com/security/data/fix/linux/debian-cve-2026-93522.md) | Oct 12, 2026 | | Linux | xwayland opensuse-leap 16.0 | 24.1.6-160000.7.1 | [OPENSUSE-SU-2026:22085-1](https://patchblox.com/security/data/fix/linux/opensuse-su-2026-22085-1.md) | Nov 7, 2026 | | Linux | xwayland sles 15.7 | 24.1.5-150700.3.25.1 | [SUSE-SU-2026:4835-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-4835-1.md) | Nov 7, 2026 | | Linux | xwayland sles 16.0 | 24.1.6-160000.7.1 | [SUSE-SU-2026:24230-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-24230-1.md) | Nov 7, 2026 | --- Data as of 2026-11-09T01:18:40Z UTC. 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