Bug 2531744 (CVE-2026-89157) - CVE-2026-89157 pcre2: PCRE2: Out-of-bounds write via large pattern input
Summary: CVE-2026-89157 pcre2: PCRE2: Out-of-bounds write via large pattern input
Keywords:
Status: NEW
Alias: CVE-2026-89157
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: 2531824 2531823
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-09-11 04:21 UTC by OSIDB Bzimport
Modified: 2026-10-20 16:56 UTC (History)
21 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-2026:81842 0 None None None 2026-10-13 04:29:17 UTC
Red Hat Product Errata RHBA-2026:82816 0 None None None 2026-10-14 08:57:46 UTC
Red Hat Product Errata RHBA-2026:82863 0 None None None 2026-10-14 10:58:02 UTC
Red Hat Product Errata RHBA-2026:82874 0 None None None 2026-10-14 11:08:15 UTC
Red Hat Product Errata RHBA-2026:82905 0 None None None 2026-10-14 13:54:49 UTC
Red Hat Product Errata RHBA-2026:82950 0 None None None 2026-10-14 14:28:37 UTC
Red Hat Product Errata RHBA-2026:83081 0 None None None 2026-10-14 16:32:56 UTC
Red Hat Product Errata RHBA-2026:83557 0 None None None 2026-10-15 11:59:27 UTC
Red Hat Product Errata RHBA-2026:83559 0 None None None 2026-10-15 11:49:27 UTC
Red Hat Product Errata RHBA-2026:84981 0 None None None 2026-10-19 12:29:24 UTC
Red Hat Product Errata RHBA-2026:85192 0 None None None 2026-10-19 14:11:17 UTC
Red Hat Product Errata RHBA-2026:85196 0 None None None 2026-10-19 14:03:17 UTC
Red Hat Product Errata RHBA-2026:86043 0 None None None 2026-10-20 16:56:33 UTC
Red Hat Product Errata RHSA-2026:81522 0 None None None 2026-10-12 21:30:27 UTC
Red Hat Product Errata RHSA-2026:81532 0 None None None 2026-10-12 22:26:47 UTC
Red Hat Product Errata RHSA-2026:81613 0 None None None 2026-10-12 23:13:35 UTC

Description OSIDB Bzimport 2026-09-11 04:21:20 UTC 
PCRE2 before 10.48, on 32-bit platforms, has a pcre2_pattern_convert out-of-bounds write when an attacker can provide a large pattern.
Comment 2 Jon Orris 2026-10-12 21:30:25 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10

Via RHSA-2026:81522 https://access.redhat.com/errata/RHSA-2026:81522
Comment 3 Jon Orris 2026-10-12 22:26:45 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2026:81532 https://access.redhat.com/errata/RHSA-2026:81532
Comment 4 Jon Orris 2026-10-12 23:13:33 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2026:81613 https://access.redhat.com/errata/RHSA-2026:81613
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