Detections
Analytics
CVE-2026-33999
high
Description
A flaw was found in the X.Org X server. This integer underflow vulnerability, specifically in the XKB compatibility map handling, allows an attacker with local or remote X11 server access to trigger a buffer read overrun. This can lead to memory-safety violations and potentially a denial of service (DoS) or other severe impacts.
References
https://access.redhat.com/errata/RHSA-2026:21742
https://access.redhat.com/errata/RHSA-2026:21741
https://access.redhat.com/errata/RHSA-2026:21718
https://access.redhat.com/errata/RHSA-2026:21716
https://access.redhat.com/errata/RHSA-2026:21715
https://access.redhat.com/errata/RHSA-2026:21712
https://access.redhat.com/errata/RHSA-2026:21699
https://access.redhat.com/errata/RHSA-2026:20590
https://access.redhat.com/errata/RHSA-2026:20576
https://access.redhat.com/errata/RHSA-2026:20575
https://access.redhat.com/errata/RHSA-2026:20563
https://access.redhat.com/errata/RHSA-2026:20562
https://access.redhat.com/errata/RHSA-2026:20561
https://access.redhat.com/errata/RHSA-2026:20560
https://access.redhat.com/errata/RHSA-2026:20558
https://access.redhat.com/errata/RHSA-2026:20557
https://access.redhat.com/errata/RHSA-2026:20555
https://access.redhat.com/errata/RHSA-2026:20547
https://access.redhat.com/errata/RHSA-2026:19344
https://access.redhat.com/errata/RHSA-2026:19343
https://access.redhat.com/errata/RHSA-2026:19342
https://access.redhat.com/errata/RHSA-2026:19125
https://access.redhat.com/errata/RHSA-2026:13414
https://access.redhat.com/errata/RHSA-2026:11692
https://access.redhat.com/errata/RHSA-2026:11656
https://access.redhat.com/errata/RHSA-2026:11388
https://access.redhat.com/errata/RHSA-2026:11369