Bug 2446904 (CVE-2026-3979)

Summary: CVE-2026-3979 quickjs-ng: quickjs-ng: Use-after-free vulnerability via js_iterator_concat_return function manipulation
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedKeywords: Security
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Hardware: All   
OS: Linux   
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A flaw was found in quickjs-ng. A local attacker could exploit a use-after-free vulnerability by manipulating the `js_iterator_concat_return` function. This could potentially lead to information disclosure, denial of service, or limited arbitrary code execution.
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Bug Depends On: 2446936, 2446937    
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Description OSIDB Bzimport 2026-03-12 04:01:18 UTC
A flaw has been found in quickjs-ng quickjs up to 0.12.1. This affects the function js_iterator_concat_return of the file quickjs.c. This manipulation causes use after free. The attack requires local access. The exploit has been published and may be used. Patch name: daab4ad4bae4ef071ed0294618d6244e92def4cd. Applying a patch is the recommended action to fix this issue.