CVE-2026-34003
High
Description
A flaw was found in the X.Org X server's XKB key types request validation. A local attacker could send a specially crafted request to the X server, leading to an out-of-bounds memory access vulnerability. This could result in the disclosure of sensitive information or cause the server to crash, leading to a Denial of Service (DoS). In certain configurations, higher impact outcomes may be possible.
SeverityHigh
CVSS7.8
Exploit probability—
Product
Red Hat Enterprise Linux 10
PublishedApr 23, 2026
First seenApr 23, 2026
Weakness typeCWE-125Out-of-bounds read
How to fix
Vendor advisories
- access.redhat.com/errata/RHSA-2026:10739
- access.redhat.com/errata/RHSA-2026:11352
- access.redhat.com/errata/RHSA-2026:11369
- access.redhat.com/errata/RHSA-2026:11388
- access.redhat.com/errata/RHSA-2026:11656
- access.redhat.com/errata/RHSA-2026:11692
- access.redhat.com/errata/RHSA-2026:13414
- access.redhat.com/errata/RHSA-2026:19125
- access.redhat.com/errata/RHSA-2026:19342
- access.redhat.com/errata/RHSA-2026:19343
- access.redhat.com/errata/RHSA-2026:19344
- access.redhat.com/errata/RHSA-2026:20547
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| Red Hat Red Hat Enterprise Linux 10 | No range specified | — |
| Red Hat Red Hat Enterprise Linux 10.0 Extended Update Support | No range specified | — |
| Red Hat Red Hat Enterprise Linux 6 Extended Lifecycle Support - EXTENSION | No range specified | — |
| Red Hat Red Hat Enterprise Linux 7 Extended Lifecycle Support | No range specified | — |
| enterprise_linux 8 | No range specified | — |
| rhel_aus 8.4 | No range specified | — |
| rhel_aus 8.6 | No range specified | — |
| rhel_e4s 8.8 | No range specified | — |
| enterprise_linux 9 | No range specified | — |
| rhel_e4s 9.0 | No range specified | — |
| rhel_e4s 9.2 | No range specified | — |
| rhel_eus 9.4 | No range specified | — |
| rhel_eus 9.6 | No range specified | — |
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