NULL Pointer Dereference Affecting nasm package, versions *


Severity

Recommended
0.0
medium
0
10

Based on Ubuntu security rating.

Threat Intelligence

EPSS
0.14% (35th percentile)

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  • Snyk IDSNYK-UBUNTU2504-NASM-9822603
  • published18 Sept 2025
  • disclosed22 Dec 2021

Introduced: 22 Dec 2021

CVE-2021-45256  (opens in a new tab)
CWE-476  (opens in a new tab)

How to fix?

There is no fixed version for Ubuntu:25.04 nasm.

NVD Description

Note: Versions mentioned in the description apply only to the upstream nasm package and not the nasm package as distributed by Ubuntu. See How to fix? for Ubuntu:25.04 relevant fixed versions and status.

A Null Pointer Dereference vulnerability existfs in nasm 2.16rc0 via asm/preproc.c.

CVSS Base Scores

version 3.1