Bug 2545131

Summary:	CVE-2026-103111 pcre2: pcre2: Out-of-bounds write via crafted regular expression [fedora-all]
Product:	[Fedora] Fedora	Reporter:	Samuele Negrini <snegrini>
Component:	pcre2	Assignee:	Daniel Handzus <dhandzus>
Status:	ON_QA ---	QA Contact:	Fedora Extras Quality Assurance <extras-qa>
Severity:	high	Docs Contact:
Priority:	high
Version:	rawhide	CC:	db-sig, dhandzus
Target Milestone:	---	Keywords:	Security, SecurityTracking
Target Release:	---
Hardware:	Unspecified
OS:	Unspecified
Whiteboard:	{"flaws": ["342b9e45-d6b0-4bef-8a3a-fb5e3415fa80"]}
Fixed In Version:		Doc Type:	---
Doc Text:		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:
Bug Blocks:	2543797

Description Samuele Negrini 2026-10-02 12:15:27 UTC

Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.

PCRE2 before 10.49, when there is an attacker-controlled regular expression and certain JIT API usage, allows an out-of-bounds write with arbitrary data.

Comment 1 Fedora Update System 2026-10-23 09:12:10 UTC

FEDORA-2026-450395b11f (pcre2-10.49-1.fc44) has been submitted as an update to Fedora 44.
https://bodhi.fedoraproject.org/updates/FEDORA-2026-450395b11f

Comment 2 Fedora Update System 2026-10-23 09:12:34 UTC

FEDORA-2026-3dc7e56d1e (pcre2-10.49-1.fc45) has been submitted as an update to Fedora 45.
https://bodhi.fedoraproject.org/updates/FEDORA-2026-3dc7e56d1e

Comment 3 Fedora Update System 2026-10-24 17:25:24 UTC

FEDORA-2026-450395b11f has been pushed to the Fedora 44 testing repository.
Soon you'll be able to install the update with the following command:
`sudo dnf upgrade --enablerepo=updates-testing --refresh --advisory=FEDORA-2026-450395b11f`
You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2026-450395b11f

See also https://fedoraproject.org/wiki/QA:Updates_Testing for more information on how to test updates.

Comment 4 Fedora Update System 2026-10-24 18:15:17 UTC

FEDORA-2026-3dc7e56d1e has been pushed to the Fedora 45 testing repository.
Soon you'll be able to install the update with the following command:
`sudo dnf upgrade --enablerepo=updates-testing --refresh --advisory=FEDORA-2026-3dc7e56d1e`
You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2026-3dc7e56d1e

See also https://fedoraproject.org/wiki/QA:Updates_Testing for more information on how to test updates.