Uncontrolled Memory Allocation Affecting asm package, versions <9.11.1-1


Severity

Recommended
0.0
medium
0
10

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Threat Intelligence

EPSS
0.17% (7th percentile)

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  • Snyk IDSNYK-DEBIANUNSTABLE-ASM-21176379
  • published18 Oct 2026
  • disclosed14 Oct 2026

Introduced: 14 Oct 2026

NewCVE-2026-110257  (opens in a new tab)
CWE-789  (opens in a new tab)

How to fix?

Upgrade Debian:unstable asm to version 9.11.1-1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream asm package and not the asm package as distributed by Debian. See How to fix? for Debian:unstable relevant fixed versions and status.

OW2 ASM 5.0 before 9.11 contains an excessive memory allocation vulnerability in ClassReader.readBootstrapMethodsAttribute() that sizes an int array from num_bootstrap_methods without validating attribute_length. Attackers can supply a crafted class file of about 100 bytes that forces roughly 2 GB allocation, causing an OutOfMemoryError that crashes the JVM or consuming thread.

CVSS Base Scores

version 3.1