Bug 2442782 (CVE-2026-26986) - CVE-2026-26986 freerdp: FreeRDP: Denial of Service via double free vulnerability during disconnect
Summary: CVE-2026-26986 freerdp: FreeRDP: Denial of Service via double free vulnerabil...
Keywords:
Status: NEW
Alias: CVE-2026-26986
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On: 2442802 2442837 2442805 2442812 2442814
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-02-25 22:02 UTC by OSIDB Bzimport
Modified: 2026-05-26 04:54 UTC (History)
0 users

Fixed In Version:
Clone Of:
Environment:
Last Closed:
Embargoed:

Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2026:16014 0 None None None 2026-05-11 16:15:27 UTC
Red Hat Product Errata RHSA-2026:16019 0 None None None 2026-05-11 16:18:29 UTC
Red Hat Product Errata RHSA-2026:16482 0 None None None 2026-05-13 00:56:54 UTC
Red Hat Product Errata RHSA-2026:16483 0 None None None 2026-05-12 23:24:39 UTC
Red Hat Product Errata RHSA-2026:16485 0 None None None 2026-05-12 23:24:56 UTC
Red Hat Product Errata RHSA-2026:16777 0 None None None 2026-05-13 04:38:57 UTC
Red Hat Product Errata RHSA-2026:16814 0 None None None 2026-05-13 05:49:49 UTC
Red Hat Product Errata RHSA-2026:16865 0 None None None 2026-05-13 06:48:28 UTC
Red Hat Product Errata RHSA-2026:16866 0 None None None 2026-05-13 06:38:46 UTC
Red Hat Product Errata RHSA-2026:19142 0 None None None 2026-05-19 16:08:54 UTC
Red Hat Product Errata RHSA-2026:19358 0 None None None 2026-05-19 21:40:08 UTC
Red Hat Product Errata RHSA-2026:19811 0 None None None 2026-05-20 19:42:51 UTC
Red Hat Product Errata RHSA-2026:20546 0 None None None 2026-05-26 01:54:15 UTC
Red Hat Product Errata RHSA-2026:20605 0 None None None 2026-05-26 04:54:30 UTC

Description OSIDB Bzimport 2026-02-25 22:02:12 UTC 
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.
Comment 2 errata-xmlrpc 2026-05-11 16:15:26 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10

Via RHSA-2026:16014 https://access.redhat.com/errata/RHSA-2026:16014
Comment 3 errata-xmlrpc 2026-05-11 16:18:28 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2026:16019 https://access.redhat.com/errata/RHSA-2026:16019
Comment 4 errata-xmlrpc 2026-05-12 23:24:38 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions

Via RHSA-2026:16483 https://access.redhat.com/errata/RHSA-2026:16483
Comment 5 errata-xmlrpc 2026-05-12 23:24:55 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions

Via RHSA-2026:16485 https://access.redhat.com/errata/RHSA-2026:16485
Comment 6 errata-xmlrpc 2026-05-13 00:56:53 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2026:16482 https://access.redhat.com/errata/RHSA-2026:16482
Comment 7 errata-xmlrpc 2026-05-13 04:38:56 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions
  Red Hat Enterprise Linux 8.8 Telecommunications Update Service

Via RHSA-2026:16777 https://access.redhat.com/errata/RHSA-2026:16777
Comment 8 errata-xmlrpc 2026-05-13 05:49:48 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support
  Red Hat Enterprise Linux 8.6 Update Services for SAP Solutions
  Red Hat Enterprise Linux 8.6 Telecommunications Update Service

Via RHSA-2026:16814 https://access.redhat.com/errata/RHSA-2026:16814
Comment 9 errata-xmlrpc 2026-05-13 06:38:46 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.4 Extended Update Support

Via RHSA-2026:16866 https://access.redhat.com/errata/RHSA-2026:16866
Comment 10 errata-xmlrpc 2026-05-13 06:48:27 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.6 Extended Update Support

Via RHSA-2026:16865 https://access.redhat.com/errata/RHSA-2026:16865
Comment 11 errata-xmlrpc 2026-05-19 16:08:52 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10

Via RHSA-2026:19142 https://access.redhat.com/errata/RHSA-2026:19142
Comment 12 errata-xmlrpc 2026-05-19 21:40:07 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2026:19358 https://access.redhat.com/errata/RHSA-2026:19358
Comment 13 errata-xmlrpc 2026-05-20 19:42:50 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support
  Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On

Via RHSA-2026:19811 https://access.redhat.com/errata/RHSA-2026:19811
Comment 14 errata-xmlrpc 2026-05-26 01:54:14 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7 Extended Lifecycle Support

Via RHSA-2026:20546 https://access.redhat.com/errata/RHSA-2026:20546
Comment 15 errata-xmlrpc 2026-05-26 04:54:29 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10.0 Extended Update Support

Via RHSA-2026:20605 https://access.redhat.com/errata/RHSA-2026:20605
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