Integer Overflow or Wraparound Affecting xwayland package, versions <2:24.1.6-1ubuntu0.1


Severity

Recommended
medium

Based on Ubuntu security rating.

Threat Intelligence

EPSS
0.01% (2nd percentile)

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  • Snyk IDSNYK-UBUNTU2504-XWAYLAND-10379016
  • published18 Jun 2025
  • disclosed17 Jun 2025

Introduced: 17 Jun 2025

NewCVE-2025-49176  (opens in a new tab)
CWE-190  (opens in a new tab)

How to fix?

Upgrade Ubuntu:25.04 xwayland to version 2:24.1.6-1ubuntu0.1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream xwayland package and not the xwayland package as distributed by Ubuntu. See How to fix? for Ubuntu:25.04 relevant fixed versions and status.

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.

References

CVSS Base Scores

version 3.1