{"id":"CVE-2026-110258","title":"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","summary":"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 in…","severity":"medium","cvss":5.5,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","cwe":["CWE-789","CWE-770"],"published":"2026-10-14","updated":"2026-10-14","sourceUpdated":"2026-10-14T17:18:25.057","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-110258","references":[{"url":"https://asm.ow2.io/versions.html","label":"disclosure@vulncheck.com"},{"url":"https://gitlab.ow2.org/asm/asm/-/blob/ASM_9_10_1/asm/src/main/java/org/objectweb/asm/Label.java#L568","label":"disclosure@vulncheck.com"},{"url":"https://gitlab.ow2.org/asm/asm/-/commit/4dabfe0aef14f8cccb0617640a4add8fbcc4ed36","label":"disclosure@vulncheck.com"},{"url":"https://gitlab.ow2.org/asm/asm/-/merge_requests/458","label":"disclosure@vulncheck.com"},{"url":"https://www.vulncheck.com/advisories/ow2-asm-3.0-before-9.11-excessive-memory-allocation-via-multiple-ret-instructions","label":"disclosure@vulncheck.com"},{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-110258.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-110258"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2552308"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-110258"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-110258"},{"url":"https://access.redhat.com/errata/RHSA-2026:83847"}],"tags":["nvd","cve.org","csaf","vex","red-hat"],"ingestedAt":"2026-10-14T15:36:13.997Z","vendor":"OW2","product":"ASM","affected":["ASM >= 3.0 < 9.11"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-10-14T16:10:34.452535Z"},"epss":0.0017,"epssPercentile":0.06327,"patched":["hardened_images"],"slug":"CVE-2026-110258","body":"## Overview\n\nOW2 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.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.\n\n## Vendor advisories\n\n- **RHSA-2026:83847** · Red Hat · fixed in: Red Hat Hardened Images · released 2026-10-16 · [advisory](https://access.redhat.com/errata/RHSA-2026:83847)","depth":"sunlit","depthScore":30,"depthScoreParts":{"impact":30.3,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}