Bug 2378935 (CVE-2025-7207)

Summary: CVE-2025-7207 mruby: mruby Heap Buffer Overflow
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
Severity: low Docs Contact:
Priority: low    
Version: unspecifiedCC: jwendell, rcernich
Target Milestone: ---Keywords: Security
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Hardware: All   
OS: Linux   
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A flaw was found in mruby. The `scope_new` function in `mrbgems/mruby-compiler/core/codegen.c` contains a heap-based buffer manipulation, potentially leading to memory corruption. A local attacker can trigger this vulnerability through crafted input, resulting in a potential denial of service.
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Description OSIDB Bzimport 2025-07-09 01:01:10 UTC 
A vulnerability, which was classified as problematic, was found in mruby up to 3.4.0-rc2. Affected is the function scope_new of the file mrbgems/mruby-compiler/core/codegen.c of the component nregs Handler. The manipulation leads to heap-based buffer overflow. An attack has to be approached locally. The exploit has been disclosed to the public and may be used. The name of the patch is 1fdd96104180cc0fb5d3cb086b05ab6458911bb9. It is recommended to apply a patch to fix this issue.