Medium severity5.5NVD Advisory· Published Oct 14, 2026· Updated Oct 14, 2026
CVE-2026-110258
CVE-2026-110258
Description
OW2 ASM 3.0 before 9.11 contains an excessive memory allocation vulnerability in Label.addSubroutineRetSuccessors() that fails to enforce the single-RET-per-JSR rule. Attackers can supply a crafted invalid class file with multiple RET instructions for one JSR, triggering a roughly 2 GB allocation that crashes the JVM.
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Patches
Vulnerability mechanics
References
5- asm.ow2.io/versions.htmlnvd
- gitlab.ow2.org/asm/asm/-/blob/ASM_9_10_1/asm/src/main/java/org/objectweb/asm/Label.javanvd
- gitlab.ow2.org/asm/asm/-/commit/4dabfe0aef14f8cccb0617640a4add8fbcc4ed36nvd
- gitlab.ow2.org/asm/asm/-/merge_requests/458nvd
- www.vulncheck.com/advisories/ow2-asm-3.0-before-9.11-excessive-memory-allocation-via-multiple-ret-instructionsnvd
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