NULL Pointer Dereference The advisory has been revoked - it doesn't affect any version of package nasm (opens in a new tab)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-UBUNTU2510-NASM-15024616
- published17 Jan 2026
- disclosed22 Dec 2021
Introduced: 22 Dec 2021
CVE-2021-45256 (opens in a new tab)Amendment
The Ubuntu security team deemed this advisory irrelevant for Ubuntu:25.10.
NVD Description
Note: Versions mentioned in the description apply only to the upstream nasm package and not the nasm package as distributed by Ubuntu.
A Null Pointer Dereference vulnerability existfs in nasm 2.16rc0 via asm/preproc.c.