Bug 2429647 (CVE-2026-22853)

Summary:	CVE-2026-22853 freerdp: FreeRDP heap-buffer-overflow
Product:	[Other] Security Response	Reporter:	OSIDB Bzimport <bzimport>
Component:	vulnerability	Assignee:	Product Security DevOps Team <prodsec-dev>
Status:	NEW ---	QA Contact:
Severity:	high	Docs Contact:
Priority:	high
Version:	unspecified	Keywords:	Security
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Hardware:	All
OS:	Linux
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Doc Text:	A heap based buffer overflow flaw has been discovered in FreeRDP. In affected versions RDPEAR’s NDR array reader does not perform bounds checking on the on‑wire element count and can write past the heap buffer allocated from hints, causing a heap buffer overflow in ndr_read_uint8Array.	Story Points:	---
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oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:	2429790, 2429793, 2429807, 2429812, 2429817
Bug Blocks:

Description OSIDB Bzimport 2026-01-14 18:01:29 UTC

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.20.1, RDPEAR’s NDR array reader does not perform bounds checking on the on‑wire element count and can write past the heap buffer allocated from hints, causing a heap buffer overflow in ndr_read_uint8Array. This vulnerability is fixed in 3.20.1.

Comment 2 errata-xmlrpc 2026-02-23 10:10:06 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10

Via RHSA-2026:3068 https://access.redhat.com/errata/RHSA-2026:3068

Comment 3 errata-xmlrpc 2026-03-09 18:01:13 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10.0 Extended Update Support

Via RHSA-2026:4121 https://access.redhat.com/errata/RHSA-2026:4121