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Xwayland: xorg: x.org x server: information disclosure and denial of service via out-of-bounds read in xkb geometry processing. (Red Hat Red Hat Enterprise Linux 10.0 Extended Update Support)

CVE-2026-34000
MEDIUM 6.1

At a glance

Source
NVD
EPSS
EPSS 0.49 % · percentile 42 ()
State
PUBLISHED
Published
Updated
Assigner
redhat
NVD status
Modified

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Description

A flaw was found in the X.Org X server. This out-of-bounds read vulnerability in the XKB geometry processing, specifically within the `CheckSetGeom()` and `XkbAddGeomKeyAlias` functions, allows an attacker to read uninitialized or out-of-bounds memory. An attacker with a connection to the X11 server, either locally or remotely, can exploit this without user interaction. This could lead to the disclosure of memory contents or cause a denial of service by crashing the server.

Weaknesses (CWE)

  • CWE-125 — Out-of-bounds Read

References

Scores

VersionScoreVectorScored by
CVSS 3.1MEDIUM 6.1CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:Lredhat
CVSS 3.1MEDIUM 6.1CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:LNVD · secalert@redhat.com (Secondary)
CVSS 3.1CRITICAL 9.1CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:HNVD · nvd@nist.gov (Primary)

European references

Affected configurations (NVD CPE)

Affected products

ProductVersions
Red Hat · Red Hat Enterprise Linux 10.0 Extended Update Supportunaffected 0:24.1.5-6.el10_0 < *
Red Hat · Red Hat Enterprise Linux 6 Extended Lifecycle Support - EXTENSIONunaffected 0:1.1.0-25.el6_10.16 < *
Red Hat · Red Hat Enterprise Linux 7 Extended Lifecycle Supportunaffected 0:1.20.4-34.el7_9 < *
Red Hat · Red Hat Enterprise Linux 7 Extended Lifecycle Supportunaffected 0:1.8.0-36.el7_9.4 < *
Red Hat · Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Supportunaffected 0:1.20.10-4.el8_4 < *
Red Hat · Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Supportunaffected 0:1.11.0-8.el8_4.15 < *
Red Hat · Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-Onunaffected 0:1.20.10-4.el8_4 < *
Red Hat · Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-Onunaffected 0:1.11.0-8.el8_4.15 < *
Red Hat · Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Supportunaffected 0:21.1.3-2.el8_6.6 < *
Red Hat · Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Supportunaffected 0:1.20.11-7.el8_6 < *
Red Hat · Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Supportunaffected 0:1.12.0-6.el8_6.17 < *
Red Hat · Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-Onunaffected 0:1.12.0-6.el8_6.17 < *
Red Hat · Red Hat Enterprise Linux 8.6 Telecommunications Update Serviceunaffected 0:21.1.3-2.el8_6.6 < *
Red Hat · Red Hat Enterprise Linux 8.6 Telecommunications Update Serviceunaffected 0:1.20.11-7.el8_6 < *
Red Hat · Red Hat Enterprise Linux 8.6 Update Services for SAP Solutionsunaffected 0:21.1.3-2.el8_6.6 < *
Red Hat · Red Hat Enterprise Linux 8.6 Update Services for SAP Solutionsunaffected 0:1.20.11-7.el8_6 < *
Red Hat · Red Hat Enterprise Linux 8.8 Telecommunications Update Serviceunaffected 0:21.1.3-13.el8_8 < *
Red Hat · Red Hat Enterprise Linux 8.8 Telecommunications Update Serviceunaffected 0:1.20.11-18.el8_8 < *
Red Hat · Red Hat Enterprise Linux 8.8 Telecommunications Update Serviceunaffected 0:1.12.0-15.el8_8.17 < *
Red Hat · Red Hat Enterprise Linux 8.8 Update Services for SAP Solutionsunaffected 0:21.1.3-13.el8_8 < *

Sources

SourceLicence
CVE List (CVEProject cvelistV5)CVE Program Terms of Use
EPSS (FIRST.org)FIRST — attribution requested
ENISA EUVDENISA — reproduction authorised, source acknowledged
NVD (NIST) via fkie-cad/nvd-json-data-feedsPublic domain — this product uses data from the NVD API but is not endorsed or certified by the NVD