Bug 2531807

Summary: CVE-2026-89156 fish: PCRE2: Out-of-bounds read via invalid UTF data during JIT fallback [fedora-all]
Product: [Fedora] Fedora Reporter: Ganesh <gnaik>
Component: fishAssignee: Neal Gompa <ngompa13>
Status: NEW --- QA Contact: Fedora Extras Quality Assurance <extras-qa>
Severity: low Docs Contact:
Priority: low    
Version: rawhideCC: dan.cermak, igor.raits, luto, michel, ngompa13, rust-sig, svashisht
Target Milestone: ---Keywords: Security, SecurityTracking
Target Release: ---   
Hardware: Unspecified   
OS: Unspecified   
Whiteboard: {"flaws": ["8dfb014a-dab9-4cf3-8914-8c2089ed1e50"]}
Fixed In Version: Doc Type: ---
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Documentation: --- CRM:
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Bug Depends On:    
Bug Blocks: 2531743    

Description Ganesh 2026-09-11 09:27:31 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 10.48 has a pcre2_match out-of-bounds read after a JIT fallback when an attacker can provide invalid UTF data.