Bug 2512448

Summary: CVE-2026-56848 nodejs24: Node.js: Heap-use-after-free in HTTP/2 handling can lead to denial of service [fedora-all]
Product: [Fedora] Fedora Reporter: Srikanth Balasubramanian <sbalasub>
Component: nodejs24Assignee: Jan Staněk <jstanek>
Status: NEW --- QA Contact:
Severity: high Docs Contact:
Priority: high    
Version: 45CC: aradchen, jstanek, tjuhasz
Target Milestone: ---Keywords: Security, SecurityTracking
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Hardware: Unspecified   
OS: Unspecified   
Whiteboard: {"flaws": ["7c7ed9ad-13b3-4c19-b85b-478ba1c7f3bd"]}
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
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Bug Depends On:    
Bug Blocks: 2511089    

Description Srikanth Balasubramanian 2026-08-07 09:52:45 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.

A flaw in Node.js HTTP/2 handling allows `nghttp2_session_mem_send()` to be called re-entrantly while `nghttp2_session_mem_recv()` is executing, resulting in a heap-use-after-free.

This vulnerability affects Node.js **26.x**, **24.x**, and **22.x**.
Comment 1 Aoife Moloney 2026-08-17 15:49:12 UTC 
This bug appears to have been reported against 'rawhide' during the Fedora Linux 45 development cycle.
Changing version to 45.