Bug 2452789 (CVE-2026-5037)

Summary: CVE-2026-5037 mxml: mxml: Denial of Service via stack-based buffer overflow in index_sort
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 mxml. A local user can exploit a stack-based buffer overflow vulnerability by manipulating the `tempr` argument within the `index_sort` function. This can lead to a denial of service (DoS) condition, making the affected system or application unavailable.
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Bug Depends On: 2458168, 2458169    
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Description OSIDB Bzimport 2026-03-29 09:03:00 UTC 
A vulnerability was determined in mxml up to 4.0.4. This issue affects the function index_sort of the file mxml-index.c of the component mxmlIndexNew. Executing a manipulation of the argument tempr can lead to stack-based buffer overflow. The attack is restricted to local execution. The exploit has been publicly disclosed and may be utilized. This patch is called 6e27354466092a1ac65601e01ce6708710bb9fa5. A patch should be applied to remediate this issue.