CVE-2024-21885 | BDVDB-2026-225970 Detail

Red HatRed Hat Enterprise Linux 6 Extended Lifecycle Support - EXTENSION

Description#

A flaw was found in X.Org server. In the XISendDeviceHierarchyEvent function, it is possible to exceed the allocated array length when certain new device IDs are added to the xXIHierarchyInfo struct. This can trigger a heap buffer overflow condition, which may lead to an application crash or remote code execution in SSH X11 forwarding environments.

Impact#

Per CVSS v3.1: confidentiality impact high, integrity impact high, availability impact high. Attack vector: local.

Weaknesses#

CWE-122 Heap-based Buffer Overflow

References#

Show all 22

Exploit#

No public exploit known

History#

Version 12024-02-28Record published in the CVE List.
Version 22026-11-04Most recent update recorded in the CVE List.

Published

Published: 2024-02-28
Last modified: 2026-11-04

Vendor information

Vendor: Red Hat
Product: Red Hat Enterprise Linux 6 Extended Lifecycle Support - EXTENSION

All Red Hat vulnerabilities

Score

7.8 High

EPSS

1.4%, Low

Estimated chance of exploitation in the next 30 days. EPSS percentile: 73.0.

KEV

Not listed in the CISA Known Exploited Vulnerabilities catalog.

Impact

Memory Corruption

Action

No specific action is recorded in the source data. Check the references for vendor guidance.

Affected Systems

Vulnerable
Not stated
Fixed
0:1.1.0-25.el6_10.13

Scoring System

CVSS v4.0

Not available

CVSS v3.1

7.8 High

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Metric breakdown
Attack Vector	Local
Attack Complexity	Low
Privileges Required	Low
User Interaction	None
Scope	Unchanged
Confidentiality	High
Integrity	High
Availability	High

CVSS v3.0

Not available

CVSS v2

Not available

Source: CVE List v5 (record); CISA KEV (kev, action); FIRST EPSS (epss).