Bug 2553907 (CVE-2026-111378)

Summary:	CVE-2026-111378 freerdp: freerdp: Denial of Service via memory exhaustion in NLA frame parser
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	CC:	rhel-process-autobot, watson-tool-maintainers
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	---
Doc Text:	A flaw was found in FreeRDP. An unauthenticated remote attacker can cause a Denial of Service (DoS) by exhausting server memory. When processing Network Level Authentication (NLA) connections over Transport Layer Security (TLS), the server misinterprets invalid protocol bytes as an incomplete packet rather than rejecting them. This triggers unbounded receive buffer growth as incoming data is streamed, consuming server memory until the service becomes unresponsive or crashes.	Story Points:	---
Clone Of:		Environment:
Last Closed:		Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:	2553954, 2554090, 2554089
Bug Blocks:

Description OSIDB Bzimport 2026-10-16 01:41:24 UTC

FreeRDP from 3.0.0 before 3.32.0 contains an uncontrolled resource consumption vulnerability in parse_nla_mode_pdu that allows unauthenticated attackers to exhaust server memory. Attackers can complete TLS and stream bytes not beginning with the DER SEQUENCE tag 0x30, causing unbounded receive buffer growth before NLA authentication.

Comment 2 Jon Orris 2026-11-03 13:00:36 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10

Via RHSA-2026:94514 https://access.redhat.com/errata/RHSA-2026:94514