Bug 2528990 (CVE-2026-86142) - CVE-2026-86142 libxml2: libxml2: Heap-based buffer overflow in xmlXPtrEval due to xpointer length saturation
Summary: CVE-2026-86142 libxml2: libxml2: Heap-based buffer overflow in xmlXPtrEval du...
Keywords:
Status: NEW
Alias: CVE-2026-86142
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: 2529812 2529813 2529811
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-09-05 04:41 UTC by OSIDB Bzimport
Modified: 2026-10-26 15:42 UTC (History)
27 users (show)

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 RHBA-2026:72291 0 None None None 2026-09-28 01:56:04 UTC
Red Hat Product Errata RHBA-2026:72477 0 None None None 2026-09-28 11:48:19 UTC
Red Hat Product Errata RHBA-2026:73415 0 None None None 2026-09-29 12:38:29 UTC
Red Hat Product Errata RHBA-2026:73745 0 None None None 2026-09-30 04:15:13 UTC
Red Hat Product Errata RHBA-2026:73918 0 None None None 2026-09-30 11:25:25 UTC
Red Hat Product Errata RHBA-2026:74142 0 None None None 2026-09-30 21:41:16 UTC
Red Hat Product Errata RHBA-2026:74468 0 None None None 2026-10-01 16:27:42 UTC
Red Hat Product Errata RHBA-2026:82805 0 None None None 2026-10-14 08:13:38 UTC
Red Hat Product Errata RHBA-2026:82819 0 None None None 2026-10-14 09:03:30 UTC
Red Hat Product Errata RHSA-2026:71585 0 None None None 2026-09-24 19:00:39 UTC
Red Hat Product Errata RHSA-2026:71586 0 None None None 2026-09-24 12:55:00 UTC
Red Hat Product Errata RHSA-2026:80675 0 None None None 2026-10-12 09:23:41 UTC
Red Hat Product Errata RHSA-2026:89750 0 None None None 2026-10-26 03:04:55 UTC
Red Hat Product Errata RHSA-2026:89759 0 None None None 2026-10-26 03:20:05 UTC
Red Hat Product Errata RHSA-2026:90309 0 None None None 2026-10-26 15:42:16 UTC

Description OSIDB Bzimport 2026-09-05 04:41:31 UTC 
In libxml2 before 2.15.4, there is a heap-based buffer overflow in xmlXPtrEvalXPtrPart because of xmlXPtrEval xpointer length saturation.
Comment 3 Jon Orris 2026-09-24 12:54:58 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10

Via RHSA-2026:71586 https://access.redhat.com/errata/RHSA-2026:71586
Comment 4 Jon Orris 2026-09-24 12:54:59 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10

Via RHSA-2026:71586 https://access.redhat.com/errata/RHSA-2026:71586
Comment 5 Jon Orris 2026-09-24 19:00:36 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2026:71585 https://access.redhat.com/errata/RHSA-2026:71585
Comment 6 Jon Orris 2026-10-12 09:23:38 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2026:80675 https://access.redhat.com/errata/RHSA-2026:80675
Comment 7 Jon Orris 2026-10-26 03:04:53 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions

Via RHSA-2026:89750 https://access.redhat.com/errata/RHSA-2026:89750
Comment 8 Jon Orris 2026-10-26 03:20:03 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10.0 Extended Update Support

Via RHSA-2026:89759 https://access.redhat.com/errata/RHSA-2026:89759
Comment 9 Jon Orris 2026-10-26 15:42:14 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.6 Extended Update Support

Via RHSA-2026:90309 https://access.redhat.com/errata/RHSA-2026:90309
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