CVE-2026-93524
X.Org Server XKB SetMap Key Width/Action Count Desync Out-Of-Bounds Read
CVE-2026-93524 is fixed in 32 products on 1 platform, first by DEBIAN-CVE-2026-93524, released October 12, 2026. It is not reported as exploited. Patch Radar priority: High.
High
CVSS
n/a
important
Exploitation
None reported
No vendor assessment
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.0018
7th percentile
A buffer overread in CheckKeySyms() in X.Org X Server before 21.1.25 and XWayland before 24.1.14 could be used by authenticated X clients to leak small amounts of information from X server memory or potentially crash the X server.
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-2026-93524 | Oct 12, 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-Xephyr · amzn 2023 | 21.1.13-5.amzn2023.0.12 | ALAS2023-2026-3260 | 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 · amzn 2023 | 21.1.13-5.amzn2023.0.12 | ALAS2023-2026-3260 | 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 · amzn 2023 | 21.1.13-5.amzn2023.0.12 | ALAS2023-2026-3260 | 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 · amzn 2023 | 21.1.13-5.amzn2023.0.12 | ALAS2023-2026-3260 | 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 · amzn 2023 | 24.1.3-1.amzn2023.0.7 | ALAS2023-2026-3261 | 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 · amzn 2023 | 24.1.3-1.amzn2023.0.7 | ALAS2023-2026-3261 | 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-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 · amzn 2023 | 21.1.13-5.amzn2023.0.12 | ALAS2023-2026-3260 | Nov 7, 2026 |
| xorg-x11-server-source · amzn 2023 | 21.1.13-5.amzn2023.0.12 | ALAS2023-2026-3260 | Nov 7, 2026 |
| xwayland · Debian 14 | 2:24.1.14-1 | DEBIAN-CVE-2026-93524 | 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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