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7.3 High

CVE-2025-49176 Xorg-x11-server-xwayland: xorg-x11-server: tigervnc: integer overflow in big requests extension

Description

A flaw was found in the Big Requests extension. The request length is multiplied by 4 before checking against the maximum allowed size, potentially causing an integer overflow and bypassing the size check.

CVSS 3.1 detail

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

Exploitable with local access to the machine, with an ordinary account and without any user action; an attacker can seriously compromise confidentiality, integrity or availability.

Attack vector
Local
Attack complexity
Low
Privileges required
Low
Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
High
Availability
High

Affected products and versions

Product Affected versions Fixed in
xwayland 24.1 earliest → < 24.1.7 24.1.7
Red Hat Enterprise Linux 10 Versions not published
Red Hat Enterprise Linux 6 Extended Lifecycle Support - EXTENSION Versions not published
Red Hat Enterprise Linux 7.7 Advanced Update Support Versions not published
Red Hat Enterprise Linux 7 Extended Lifecycle Support Versions not published
Red Hat Enterprise Linux 8 Versions not published
Red Hat Enterprise Linux 8.2 Advanced Update Support Versions not published
Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support Versions not published
Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On Versions not published
Show the 13 other branches
Product Affected versions Fixed in
Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support Versions not published
Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On Versions not published
Red Hat Enterprise Linux 8.6 Telecommunications Update Service Versions not published
Red Hat Enterprise Linux 8.6 Update Services for SAP Solutions Versions not published
Red Hat Enterprise Linux 8.8 Extended Update Support Long-Life Add-On Versions not published
Red Hat Enterprise Linux 8.8 Telecommunications Update Service Versions not published
Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions Versions not published
Red Hat Enterprise Linux 9 Versions not published
Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions Versions not published
Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions Versions not published
Red Hat Enterprise Linux 9.4 Extended Update Support Versions not published
Red Hat Enterprise Linux 6 Versions not published
Red Hat In-Vehicle Operating System 1 Versions not published

References

Timeline

  1. Published
  2. Last modified

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