CVE-2026-93517
X.Org Server GLX RenderLarge Heap Buffer Overflow
CVE-2026-93517 is fixed in 33 products on 1 platform, first by DEBIAN-CVE-2026-93517, released October 12, 2026. It is not reported as exploited. Patch Radar priority: High.
High
CVSS
7.8
Moderate
Exploitation
None reported
No vendor assessment
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.0019
8th percentile
A heap buffer overflow in handling GLX RenderLarge request where dataBytes exceeds cmdlen in X.org X server before 21.1.25 and XWayland before 24.1.14 that could be be triggered by an authenticated X client could cause crashes or code execution in X server context.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| tigervnc · amzn 2023 | 1.14.1-3.amzn2023.0.7 | ALAS2023-2026-3262 | Nov 7, 2026 |
| tigervnc-debuginfo · amzn 2023 | 1.14.1-3.amzn2023.0.7 | ALAS2023-2026-3262 | Nov 7, 2026 |
| tigervnc-debugsource · amzn 2023 | 1.14.1-3.amzn2023.0.7 | ALAS2023-2026-3262 | Nov 7, 2026 |
| tigervnc-icons · amzn 2023 | 1.14.1-3.amzn2023.0.7 | ALAS2023-2026-3262 | Nov 7, 2026 |
| tigervnc-license · amzn 2023 | 1.14.1-3.amzn2023.0.7 | ALAS2023-2026-3262 | Nov 7, 2026 |
| tigervnc-selinux · amzn 2023 | 1.14.1-3.amzn2023.0.7 | ALAS2023-2026-3262 | Nov 7, 2026 |
| tigervnc-server · amzn 2023 | 1.14.1-3.amzn2023.0.7 | ALAS2023-2026-3262 | Nov 7, 2026 |
| tigervnc-server-debuginfo · amzn 2023 | 1.14.1-3.amzn2023.0.7 | ALAS2023-2026-3262 | Nov 7, 2026 |
| tigervnc-server-minimal · amzn 2023 | 1.14.1-3.amzn2023.0.7 | ALAS2023-2026-3262 | Nov 7, 2026 |
| tigervnc-server-minimal-debuginfo · amzn 2023 | 1.14.1-3.amzn2023.0.7 | ALAS2023-2026-3262 | Nov 7, 2026 |
| tigervnc-server-module · amzn 2023 | 1.14.1-3.amzn2023.0.7 | ALAS2023-2026-3262 | Nov 7, 2026 |
| tigervnc-server-module-debuginfo · amzn 2023 | 1.14.1-3.amzn2023.0.7 | ALAS2023-2026-3262 | Nov 7, 2026 |
| xorg-server · Debian 14 | 2:21.1.25-1 | DEBIAN-CVE-2026-93517 | Oct 12, 2026 |
| xorg-x11-server · rocky 8 | 0:1.20.11-28.el8_10.5 | RLSA-2026:89747 | Nov 7, 2026 |
| xorg-x11-server · rocky 9 | 0:1.20.11-34.el9_8.5 | RLSA-2026:84574 | Nov 7, 2026 |
| xorg-x11-server · sles 15.6 | 21.1.11-150600.5.34.1 | SUSE-SU-2026:4647-1 | Nov 7, 2026 |
| xorg-x11-server · sles 15.7 | 21.1.15-150700.5.25.1 | SUSE-SU-2026:4646-1 | Nov 7, 2026 |
| xorg-x11-server-Xdmx · RHEL 8 | 0:1.20.11-28.el8_10.5 | RHSA-2026:89747 | Oct 27, 2026 |
| xorg-x11-server-Xdmx · RHEL 9 | 0:1.20.11-34.el9_8.5 | RHSA-2026:84574 | Oct 19, 2026 |
| xorg-x11-server-Xdmx · almalinux 8 | 1.20.11-28.el8_10.5 | ALSA-2026:89747 | Nov 7, 2026 |
| xorg-x11-server-Xdmx · almalinux 9 | 1.20.11-34.el9_8.5 | ALSA-2026:84574 | Nov 7, 2026 |
| xorg-x11-server-Xdmx · ol 8 | 0:1.20.11-28.el8_10.5 | ELSA-2026-89747 | Nov 7, 2026 |
| xorg-x11-server-Xdmx · ol 9 | 0:1.20.11-34.el9_8.5 | ELSA-2026-84574 | Nov 7, 2026 |
| xorg-x11-server-Xephyr · RHEL 8 | 0:1.20.11-28.el8_10.5 | RHSA-2026:89747 | Oct 27, 2026 |
| xorg-x11-server-Xephyr · RHEL 9 | 0:1.20.11-34.el9_8.5 | RHSA-2026:84574 | Oct 19, 2026 |
| xorg-x11-server-Xephyr · almalinux 8 | 1.20.11-28.el8_10.5 | ALSA-2026:89747 | Nov 7, 2026 |
| xorg-x11-server-Xephyr · almalinux 9 | 1.20.11-34.el9_8.5 | ALSA-2026:84574 | Nov 7, 2026 |
| xorg-x11-server-Xephyr · amzn 2023 | 21.1.13-5.amzn2023.0.12 | ALAS2023-2026-3260 | Nov 7, 2026 |
| xorg-x11-server-Xephyr · ol 8 | 0:1.20.11-28.el8_10.5 | ELSA-2026-89747 | Nov 7, 2026 |
| xorg-x11-server-Xephyr · ol 9 | 0:1.20.11-34.el9_8.5 | ELSA-2026-84574 | Nov 7, 2026 |
| xorg-x11-server-Xephyr-debuginfo · amzn 2023 | 21.1.13-5.amzn2023.0.12 | ALAS2023-2026-3260 | Nov 7, 2026 |
| xorg-x11-server-Xnest · RHEL 8 | 0:1.20.11-28.el8_10.5 | RHSA-2026:89747 | Oct 27, 2026 |
| xorg-x11-server-Xnest · RHEL 9 | 0:1.20.11-34.el9_8.5 | RHSA-2026:84574 | Oct 19, 2026 |
| xorg-x11-server-Xnest · almalinux 8 | 1.20.11-28.el8_10.5 | ALSA-2026:89747 | Nov 7, 2026 |
| xorg-x11-server-Xnest · almalinux 9 | 1.20.11-34.el9_8.5 | ALSA-2026:84574 | Nov 7, 2026 |
| xorg-x11-server-Xnest · amzn 2023 | 21.1.13-5.amzn2023.0.12 | ALAS2023-2026-3260 | Nov 7, 2026 |
| xorg-x11-server-Xnest · ol 8 | 0:1.20.11-28.el8_10.5 | ELSA-2026-89747 | Nov 7, 2026 |
| xorg-x11-server-Xnest · ol 9 | 0:1.20.11-34.el9_8.5 | ELSA-2026-84574 | Nov 7, 2026 |
| xorg-x11-server-Xnest-debuginfo · amzn 2023 | 21.1.13-5.amzn2023.0.12 | ALAS2023-2026-3260 | Nov 7, 2026 |
| xorg-x11-server-Xorg · RHEL 8 | 0:1.20.11-28.el8_10.5 | RHSA-2026:89747 | Oct 27, 2026 |
| xorg-x11-server-Xorg · RHEL 9 | 0:1.20.11-34.el9_8.5 | RHSA-2026:84574 | Oct 19, 2026 |
| xorg-x11-server-Xorg · almalinux 8 | 1.20.11-28.el8_10.5 | ALSA-2026:89747 | Nov 7, 2026 |
| xorg-x11-server-Xorg · almalinux 9 | 1.20.11-34.el9_8.5 | ALSA-2026:84574 | Nov 7, 2026 |
| xorg-x11-server-Xorg · amzn 2023 | 21.1.13-5.amzn2023.0.12 | ALAS2023-2026-3260 | Nov 7, 2026 |
| xorg-x11-server-Xorg · ol 8 | 0:1.20.11-28.el8_10.5 | ELSA-2026-89747 | Nov 7, 2026 |
| xorg-x11-server-Xorg · ol 9 | 0:1.20.11-34.el9_8.5 | ELSA-2026-84574 | Nov 7, 2026 |
| xorg-x11-server-Xorg-debuginfo · amzn 2023 | 21.1.13-5.amzn2023.0.12 | ALAS2023-2026-3260 | Nov 7, 2026 |
| xorg-x11-server-Xvfb · RHEL 8 | 0:1.20.11-28.el8_10.5 | RHSA-2026:89747 | Oct 27, 2026 |
| xorg-x11-server-Xvfb · RHEL 9 | 0:1.20.11-34.el9_8.5 | RHSA-2026:84574 | Oct 19, 2026 |
| xorg-x11-server-Xvfb · almalinux 8 | 1.20.11-28.el8_10.5 | ALSA-2026:89747 | Nov 7, 2026 |
| xorg-x11-server-Xvfb · almalinux 9 | 1.20.11-34.el9_8.5 | ALSA-2026:84574 | Nov 7, 2026 |
| xorg-x11-server-Xvfb · amzn 2023 | 21.1.13-5.amzn2023.0.12 | ALAS2023-2026-3260 | Nov 7, 2026 |
| xorg-x11-server-Xvfb · ol 8 | 0:1.20.11-28.el8_10.5 | ELSA-2026-89747 | Nov 7, 2026 |
| xorg-x11-server-Xvfb · ol 9 | 0:1.20.11-34.el9_8.5 | ELSA-2026-84574 | Nov 7, 2026 |
| xorg-x11-server-Xvfb-debuginfo · amzn 2023 | 21.1.13-5.amzn2023.0.12 | ALAS2023-2026-3260 | Nov 7, 2026 |
| xorg-x11-server-Xwayland · RHEL 10 | 24.1.9-4.el10_2.4 | RHSA-2026:85191 | Oct 20, 2026 |
| xorg-x11-server-Xwayland · RHEL 8 | 0:21.1.3-20.el8_10.4 | RHSA-2026:86907 | Oct 21, 2026 |
| xorg-x11-server-Xwayland · RHEL 9 | 0:24.1.9-4.el9_8.4 | RHSA-2026:85193 | Oct 20, 2026 |
| xorg-x11-server-Xwayland · almalinux 10 | 24.1.9-4.el10_2.4 | ALSA-2026:85191 | Nov 7, 2026 |
| xorg-x11-server-Xwayland · almalinux 8 | 21.1.3-20.el8_10.4 | ALSA-2026:86907 | Nov 7, 2026 |
| xorg-x11-server-Xwayland · almalinux 9 | 24.1.9-4.el9_8.4 | ALSA-2026:85193 | Nov 7, 2026 |
| xorg-x11-server-Xwayland · amzn 2023 | 24.1.3-1.amzn2023.0.7 | ALAS2023-2026-3261 | Nov 7, 2026 |
| xorg-x11-server-Xwayland · ol 10 | 0:24.1.9-4.el10_2.4 | ELSA-2026-85191 | Nov 7, 2026 |
| xorg-x11-server-Xwayland · ol 8 | 0:21.1.3-20.el8_10.4 | ELSA-2026-86907 | Nov 7, 2026 |
| xorg-x11-server-Xwayland · ol 9 | 0:24.1.9-4.el9_8.4 | ELSA-2026-85193 | Nov 7, 2026 |
| xorg-x11-server-Xwayland · rocky 10 | 0:24.1.9-4.el10_2.4 | RLSA-2026:85191 | Nov 7, 2026 |
| xorg-x11-server-Xwayland · rocky 8 | 0:21.1.3-20.el8_10.4 | RLSA-2026:86907 | Nov 7, 2026 |
| xorg-x11-server-Xwayland · rocky 9 | 0:24.1.9-4.el9_8.4 | RLSA-2026:85193 | Nov 7, 2026 |
| xorg-x11-server-Xwayland-debuginfo · amzn 2023 | 24.1.3-1.amzn2023.0.7 | ALAS2023-2026-3261 | Nov 7, 2026 |
| xorg-x11-server-Xwayland-debugsource · amzn 2023 | 24.1.3-1.amzn2023.0.7 | ALAS2023-2026-3261 | Nov 7, 2026 |
| xorg-x11-server-Xwayland-devel · RHEL 9 | 0:24.1.9-4.el9_8.4 | RHSA-2026:85193 | Oct 20, 2026 |
| xorg-x11-server-Xwayland-devel · almalinux 10 | 24.1.9-4.el10_2.4 | ALSA-2026:85191 | Nov 7, 2026 |
| xorg-x11-server-Xwayland-devel · almalinux 9 | 24.1.9-4.el9_8.4 | ALSA-2026:85193 | Nov 7, 2026 |
| xorg-x11-server-Xwayland-devel · amzn 2023 | 24.1.3-1.amzn2023.0.7 | ALAS2023-2026-3261 | Nov 7, 2026 |
| xorg-x11-server-Xwayland-devel · ol 10 | 0:24.1.9-4.el10_2.4 | ELSA-2026-85191 | Nov 7, 2026 |
| xorg-x11-server-Xwayland-devel · ol 9 | 0:24.1.9-4.el9_8.4 | ELSA-2026-85193 | Nov 7, 2026 |
| xorg-x11-server-common · RHEL 8 | 0:1.20.11-28.el8_10.5 | RHSA-2026:89747 | Oct 27, 2026 |
| xorg-x11-server-common · RHEL 9 | 0:1.20.11-34.el9_8.5 | RHSA-2026:84574 | Oct 19, 2026 |
| xorg-x11-server-common · almalinux 8 | 1.20.11-28.el8_10.5 | ALSA-2026:89747 | Nov 7, 2026 |
| xorg-x11-server-common · almalinux 9 | 1.20.11-34.el9_8.5 | ALSA-2026:84574 | Nov 7, 2026 |
| xorg-x11-server-common · amzn 2023 | 21.1.13-5.amzn2023.0.12 | ALAS2023-2026-3260 | Nov 7, 2026 |
| xorg-x11-server-common · ol 8 | 0:1.20.11-28.el8_10.5 | ELSA-2026-89747 | Nov 7, 2026 |
| xorg-x11-server-common · ol 9 | 0:1.20.11-34.el9_8.5 | ELSA-2026-84574 | Nov 7, 2026 |
| xorg-x11-server-debuginfo · amzn 2023 | 21.1.13-5.amzn2023.0.12 | ALAS2023-2026-3260 | Nov 7, 2026 |
| xorg-x11-server-debugsource · amzn 2023 | 21.1.13-5.amzn2023.0.12 | ALAS2023-2026-3260 | Nov 7, 2026 |
| xorg-x11-server-devel · RHEL 8 | 0:1.20.11-28.el8_10.5 | RHSA-2026:89747 | Oct 27, 2026 |
| xorg-x11-server-devel · RHEL 9 | 0:1.20.11-34.el9_8.5 | RHSA-2026:84574 | Oct 19, 2026 |
| xorg-x11-server-devel · almalinux 8 | 1.20.11-28.el8_10.5 | ALSA-2026:89747 | Nov 7, 2026 |
| xorg-x11-server-devel · almalinux 9 | 1.20.11-34.el9_8.5 | ALSA-2026:84574 | Nov 7, 2026 |
| xorg-x11-server-devel · amzn 2023 | 21.1.13-5.amzn2023.0.12 | ALAS2023-2026-3260 | Nov 7, 2026 |
| xorg-x11-server-devel · ol 8 | 0:1.20.11-28.el8_10.5 | ELSA-2026-89747 | Nov 7, 2026 |
| xorg-x11-server-devel · ol 9 | 0:1.20.11-34.el9_8.5 | ELSA-2026-84574 | Nov 7, 2026 |
| xorg-x11-server-source · RHEL 8 | 0:1.20.11-28.el8_10.5 | RHSA-2026:89747 | Oct 27, 2026 |
| xorg-x11-server-source · RHEL 9 | 0:1.20.11-34.el9_8.5 | RHSA-2026:84574 | Oct 19, 2026 |
| xorg-x11-server-source · almalinux 8 | 1.20.11-28.el8_10.5 | ALSA-2026:89747 | Nov 7, 2026 |
| xorg-x11-server-source · almalinux 9 | 1.20.11-34.el9_8.5 | ALSA-2026:84574 | Nov 7, 2026 |
| xorg-x11-server-source · amzn 2023 | 21.1.13-5.amzn2023.0.12 | ALAS2023-2026-3260 | Nov 7, 2026 |
| xorg-x11-server-source · ol 8 | 0:1.20.11-28.el8_10.5 | ELSA-2026-89747 | Nov 7, 2026 |
| xorg-x11-server-source · ol 9 | 0:1.20.11-34.el9_8.5 | ELSA-2026-84574 | Nov 7, 2026 |
| xwayland · Debian 14 | 2:24.1.14-1 | DEBIAN-CVE-2026-93517 | Oct 12, 2026 |
| xwayland · opensuse-leap 16.0 | 24.1.6-160000.7.1 | OPENSUSE-SU-2026:22085-1 | Nov 7, 2026 |
| xwayland · sles 15.7 | 24.1.5-150700.3.25.1 | SUSE-SU-2026:4835-1 | Nov 7, 2026 |
| xwayland · sles 16.0 | 24.1.6-160000.7.1 | SUSE-SU-2026:24230-1 | Nov 7, 2026 |
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