Bug 2483467 (CVE-2026-44422) - CVE-2026-44422 freerdp: FreeRDP: Arbitrary code execution or denial of service via heap use-after-free in RDPEAR NDR parser
Summary: CVE-2026-44422 freerdp: FreeRDP: Arbitrary code execution or denial of servic...
Keywords:
Status: NEW
Alias: CVE-2026-44422
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On: 2491672 2491673 2491676
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-05-29 21:01 UTC by OSIDB Bzimport
Modified: 2026-07-07 13:53 UTC (History)
2 users (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed:
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System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2026:36203 0 None None None 2026-07-07 13:53:20 UTC

Description OSIDB Bzimport 2026-05-29 21:01:33 UTC 
FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.26.0, FreeRDP's RDPEAR NDR parser accepts one non-null NDR pointer ref-id for multiple logical pointer fields without tracking the pointed object's expected NDR type or ownership. When the same ref-id is reused across two pointer fields, the parser assigns the same heap object to both output fields. The generic destructor later walks each field independently and destroys/frees both pointers. This causes a malicious-server-triggerable heap use-after-free / double-free in the FreeRDP client's RDPEAR authentication-redirection path. This vulnerability is fixed in 3.26.0.
Comment 3 errata-xmlrpc 2026-07-07 13:53:19 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10

Via RHSA-2026:36203 https://access.redhat.com/errata/RHSA-2026:36203
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