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
Configurations
No configuration.
History
30 Jun 2026, 03:18
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| References | () https://access.redhat.com/errata/RHSA-2026:10739 - | |
| References | () https://access.redhat.com/errata/RHSA-2026:11352 - | |
| References | () https://access.redhat.com/errata/RHSA-2026:11369 - | |
| References | () https://access.redhat.com/errata/RHSA-2026:11388 - | |
| References | () https://access.redhat.com/errata/RHSA-2026:11656 - | |
| References | () https://access.redhat.com/errata/RHSA-2026:11692 - | |
| References | () https://access.redhat.com/errata/RHSA-2026:13414 - | |
| References | () https://access.redhat.com/errata/RHSA-2026:19125 - | |
| References | () https://access.redhat.com/errata/RHSA-2026:19342 - | |
| References | () https://access.redhat.com/errata/RHSA-2026:19343 - | |
| References | () https://access.redhat.com/errata/RHSA-2026:19344 - | |
| References | () https://access.redhat.com/errata/RHSA-2026:20547 - | |
| References | () https://access.redhat.com/errata/RHSA-2026:20555 - | |
| References | () https://access.redhat.com/errata/RHSA-2026:20557 - | |
| References | () https://access.redhat.com/errata/RHSA-2026:20558 - | |
| References | () https://access.redhat.com/errata/RHSA-2026:20560 - | |
| References | () https://access.redhat.com/errata/RHSA-2026:20561 - | |
| References | () https://access.redhat.com/errata/RHSA-2026:20562 - | |
| References | () https://access.redhat.com/errata/RHSA-2026:20563 - | |
| References | () https://access.redhat.com/errata/RHSA-2026:20575 - | |
| References | () https://access.redhat.com/errata/RHSA-2026:20576 - | |
| References | () https://access.redhat.com/errata/RHSA-2026:20590 - | |
| References | () https://access.redhat.com/errata/RHSA-2026:21699 - | |
| References | () https://access.redhat.com/errata/RHSA-2026:21712 - | |
| References | () https://access.redhat.com/errata/RHSA-2026:21715 - | |
| References | () https://access.redhat.com/errata/RHSA-2026:21716 - | |
| References | () https://access.redhat.com/errata/RHSA-2026:21718 - | |
| References | () https://access.redhat.com/errata/RHSA-2026:21741 - | |
| References | () https://access.redhat.com/errata/RHSA-2026:21742 - | |
| References | () https://access.redhat.com/errata/RHSA-2026:22424 - | |
| References | () https://access.redhat.com/errata/RHSA-2026:22456 - | |
| References | () https://access.redhat.com/errata/RHSA-2026:23254 - | |
| References | () https://access.redhat.com/errata/RHSA-2026:23255 - | |
| References | () https://access.redhat.com/errata/RHSA-2026:23496 - | |
| References | () https://access.redhat.com/errata/RHSA-2026:24341 - | |
| References | () https://access.redhat.com/security/cve/CVE-2026-33999 - | |
| References | () https://bugzilla.redhat.com/show_bug.cgi?id=2451106 - |
08 Jun 2026, 05:16
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05 Jun 2026, 02:17
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04 Jun 2026, 18:16
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04 Jun 2026, 12:16
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02 Jun 2026, 23:16
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02 Jun 2026, 10:16
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28 May 2026, 16:16
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28 May 2026, 10:16
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28 May 2026, 09:16
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26 May 2026, 09:16
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20 May 2026, 04:16
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19 May 2026, 22:16
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04 May 2026, 13:16
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29 Apr 2026, 19:16
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28 Apr 2026, 22:16
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28 Apr 2026, 15:16
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28 Apr 2026, 13:19
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27 Apr 2026, 10:16
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23 Apr 2026, 16:16
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| New CVE |
Information
Published : 2026-04-23 16:16
Updated : 2026-07-15 02:20
NVD link : CVE-2026-33999
Mitre link : CVE-2026-33999
CVE.ORG link : CVE-2026-33999
JSON object : View
Products Affected
No product.
CWE
CWE-191
Integer Underflow (Wrap or Wraparound)
