Use After Free Affecting freerdp-libs package, versions <2:2.11.7-1.el9_7.7


Severity

Recommended
medium

Based on AlmaLinux security rating.

Threat Intelligence

EPSS
0.16% (37th percentile)

Do your applications use this vulnerable package?

In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.

Test your applications

Snyk Learn

Learn about Use After Free vulnerabilities in an interactive lesson.

Start learning
  • Snyk IDSNYK-ALMALINUX9-FREERDPLIBS-16750132
  • published18 May 2026
  • disclosed12 May 2026

Introduced: 12 May 2026

NewCVE-2026-26986  (opens in a new tab)
CWE-416  (opens in a new tab)

How to fix?

Upgrade AlmaLinux:9 freerdp-libs to version 2:2.11.7-1.el9_7.7 or higher.
This issue was patched in ALSA-2026:16482.

NVD Description

Note: Versions mentioned in the description apply only to the upstream freerdp-libs package and not the freerdp-libs package as distributed by AlmaLinux. See How to fix? for AlmaLinux:9 relevant fixed versions and status.

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.23.0, rail_window_free dereferences a freed xfAppWindow pointer during HashTable_Free cleanup because xf_rail_window_common calls free(appWindow) on title allocation failure without first removing the entry from the railWindows hash table, leaving a dangling pointer that is freed again on disconnect. Version 3.23.0 fixes the vulnerability.

CVSS Base Scores

version 3.1