Bug 2392605 (CVE-2025-9714)

Summary:	CVE-2025-9714 libxslt: libxml2: Inifinite recursion at exsltDynMapFunction function in libexslt/dynamic.c
Product:	[Other] Security Response	Reporter:	OSIDB Bzimport <bzimport>
Component:	vulnerability	Assignee:	Product Security DevOps Team <prodsec-dev>
Status:	NEW ---	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	adudiak, caswilli, crizzo, csutherl, gtanzill, jbuscemi, jclere, jmitchel, kaycoth, kshier, pbohmill, pjindal, plodge, stcannon, szappis, teagle, vchlup, yguenane
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	---
Doc Text:	A flaw was found in libxstl/libxml2. The 'exsltDynMapFunction' function in libexslt/dynamic.c does not contain a recursion depth check, which may cause an infinite loop via a specially crafted XSLT document while handling 'dyn:map()', leading to stack exhaustion and a local denial of service.	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:	2392609, 2417576, 2417577, 2417578, 2417579, 2392608
Bug Blocks:

Description OSIDB Bzimport 2025-09-02 13:26:06 UTC

A critical stack overflow vulnerability was discovered in the libxslt library when handling the dyn:map() function from the EXSLT extension. The vulnerability allows an attacker to cause a denial of service (DoS) via a specially crafted XSLT document containing the recursive dyn:map(., .) call.

The main reason of the vulnerability is that the exsltDynMapFunction function in libexslt/dynamic.c doesn’t contain a recursion depth check. When handling dyn:map(., .) where the second parameter contains a recursive call to the same function, infinite recursion occurs until the program stack is exhausted.

Comment 2 errata-xmlrpc 2025-11-26 05:23:19 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions

Via RHSA-2025:22162 https://access.redhat.com/errata/RHSA-2025:22162

Comment 3 errata-xmlrpc 2025-11-26 05:33:22 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.4 Extended Update Support

Via RHSA-2025:22163 https://access.redhat.com/errata/RHSA-2025:22163

Comment 4 errata-xmlrpc 2025-11-26 13:13:23 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions

Via RHSA-2025:22177 https://access.redhat.com/errata/RHSA-2025:22177

Comment 6 errata-xmlrpc 2025-12-01 03:11:15 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2025:22376 https://access.redhat.com/errata/RHSA-2025:22376

Comment 7 errata-xmlrpc 2025-12-01 03:15:56 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.6 Extended Update Support

Via RHSA-2025:22377 https://access.redhat.com/errata/RHSA-2025:22377

Comment 10 errata-xmlrpc 2026-01-22 19:07:28 UTC

This issue has been addressed in the following products:

  Red Hat OpenShift Container Platform 4.17

Via RHSA-2026:0702 https://access.redhat.com/errata/RHSA-2026:0702

Comment 11 errata-xmlrpc 2026-01-22 20:16:50 UTC

This issue has been addressed in the following products:

  Red Hat OpenShift Container Platform 4.13

Via RHSA-2026:0677 https://access.redhat.com/errata/RHSA-2026:0677