Bug 2552285 (CVE-2026-110260)

Summary: CVE-2026-110260 org.ow2.asm/asm: OW2 ASM: Denial of Service via crafted class file with overlapping exception handlers
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 OW2 ASM. An attacker can trigger a Denial of Service (DoS) by providing a specially crafted Java class file containing numerous overlapping exception handlers. When the library analyzes the method stack or frame structures of such a file, it performs excessive memory allocation, leading to an out-of-memory condition that crashes the Java Virtual Machine (JVM).
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Description OSIDB Bzimport 2026-10-14 14:35:13 UTC 
OW2 ASM 3.0 before 9.11 contains a quadratic memory allocation vulnerability in MethodWriter.computeMaxStackAndLocal() and computeAllFrames() when using COMPUTE_MAXS or COMPUTE_FRAMES. Attackers can supply a crafted class file with thousands of overlapping exception handlers, causing excessive Edge allocations and an OutOfMemoryError that crashes the JVM.