Bug 2500945

Summary: CVE-2026-48801 frama-c: linkify-it: Denial of Service via algorithmic complexity vulnerability [fedora-all]
Product: [Fedora] Fedora Reporter: Marian Rehak <mrehak>
Component: frama-cAssignee: Jerry James <loganjerry>
Status: CLOSED NOTABUG QA Contact: Fedora Extras Quality Assurance <extras-qa>
Severity: medium Docs Contact:
Priority: medium    
Version: rawhideCC: Andre.MARONEZE, loganjerry
Target Milestone: ---Keywords: Security, SecurityTracking
Target Release: ---   
Hardware: Unspecified   
OS: Unspecified   
Whiteboard: {"flaws": ["7906587f-f2c6-43d0-bc1e-88072a9dd509"]}
Fixed In Version: Doc Type: ---
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2026-07-15 14:02:17 UTC 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: 2500656    

Description Marian Rehak 2026-07-15 13:46:49 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.

linkify-it is a links recognition library with full Unicode support. Prior to 5.0.1, LinkifyIt.prototype.match, the package's primary public API, has O(N²) algorithmic complexity for inputs containing many fuzzy links or emails because the JavaScript-level scan loop re-slices input and re-runs unanchored regex searches on progressively shorter tails. Any service that synchronously renders untrusted Markdown with linkify:true on a request hot path can inherit a worker-process denial of service triggerable by a tens-of-KB request body. This issue is fixed in version 5.0.1.
Comment 1 Jerry James 2026-07-15 14:02:17 UTC 
As I have noted many times, the frama-c package does not build or ship any of the JavaScript for the Ivette graphical frontend, so any vulnerabilities in that JavaScript are irrelevant for Fedora.