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VULNERABILITIES

CVE-2026-50262 Details

Description

An out-of-bounds read flaw was found in the X.Org X server and Xwayland in __glXDisp_ChangeDrawableAttributes(). A wrong size validation check can read a client-controlled number of bytes, exceeding the request buffer, leading to information disclosure. A write path also exists but requires byte-swapped clients which is disabled by default.

Metrics

CVSS 3.x Severity and Vector Strings:

CNA: [email protected]CVSS-B:5.5 MEDIUMVector:CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

References to Advisories, Solutions, and Tools

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URLSource(s)Tag(s)
https://access.redhat.com/errata/RHSA-2026:26562 [email protected]
https://access.redhat.com/errata/RHSA-2026:26566 [email protected]
https://access.redhat.com/errata/RHSA-2026:26590 [email protected]
https://access.redhat.com/errata/RHSA-2026:26610 [email protected]
https://access.redhat.com/errata/RHSA-2026:26709 [email protected]

see all 33 references

Weakness Enumeration

CWE-IDCWE NameSource
CWE-125Out-of-bounds Read[email protected]

Affected Products

ProductVersions
x.org x server
< 21.1.23

CPE

  • cpe:2.3:a:x.org:x_server:*:*:*:*:*:*:*:*

Remediation

  • No remediation found in references.
x.org xwayland
< 24.1.12

CPE

  • cpe:2.3:a:x.org:xwayland:*:*:*:*:*:*:*:*

Remediation

  • No remediation found in references.
redhat enterprise linux
7.0
8.0
9.0
10.0

CPE

  • cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:*
  • cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*
  • cpe:2.3:o:redhat:enterprise_linux:9.0:*:*:*:*:*:*:*
  • cpe:2.3:o:redhat:enterprise_linux:10.0:*:*:*:*:*:*:*

Remediation

  • No remediation found in references.

Change History

23 change records found show changes

QUICK INFO

CVE Dictionary Entry:
CVE-2026-50262
NVD Published Date:
Jun 5, 2026
NVD Last Modified:
Aug 5, 2026
Source:
[email protected]
CVE-2026-50262 Details - Not Deferred