CVE-Katalog

CVE-2021-45256

nasm affected and fixed versions

[CVE-Katalog]

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

Schweregrad: Low · CVSS 3.3CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L
Published: Dec 22, 2021, 12:00:00 AM UTC
Source: [NVD] · [CVE record]
EPSS: 0.69% · Oct 27, 2026

Projects and upstream resources

[nasm][Source-reported homepage]

Reported versions and fixes

Each observation applies to its named package, distribution, and release. Distribution backports can fix a vulnerability while retaining an older upstream version number.

Distribution / release	Package	Version	Status	Source
Debiantrixie	nasm	Not reported	AffectedDistribution reports no fix	[CVE-2021-45256]
Debiantrixie	nasm	`2.16.03-1`	Affected	[CVE-2021-45256]
Debiansid	nasm	Not reported	AffectedDistribution reports no fix	[CVE-2021-45256]
Debiansid	nasm	`3.01-1`	Affected	[CVE-2021-45256]
Debianforky	nasm	Not reported	AffectedDistribution reports no fix	[CVE-2021-45256]
Debianforky	nasm	`3.01-1`	Affected	[CVE-2021-45256]
Debianbookworm	nasm	Not reported	AffectedDistribution reports no fix	[CVE-2021-45256]
Debianbookworm	nasm	`2.16.01-1`	Affected	[CVE-2021-45256]
UnknownRelease not reported	nasm	Not reported	UnknownSource applicability is not established	Provider not reported

Provider details and historical evidence

Distribution / release	Package	Version	Status	Source
UnknownRelease not reported	nasm	Not reported	UnknownSource applicability is not established	Provider not reported
Debianbookworm	nasm	Not reported	AffectedDistribution reports no fix	[CVE-2021-45256]
Debianbookworm	nasm	`2.16.01-1`	Affected	[CVE-2021-45256]
Debianforky	nasm	Not reported	AffectedDistribution reports no fix	[CVE-2021-45256]
Debianforky	nasm	`3.01-1`	Affected	[CVE-2021-45256]
Debiansid	nasm	Not reported	AffectedDistribution reports no fix	[CVE-2021-45256]
Debiansid	nasm	`3.01-1`	Affected	[CVE-2021-45256]
Debiantrixie	nasm	Not reported	AffectedDistribution reports no fix	[CVE-2021-45256]
Debiantrixie	nasm	`2.16.03-1`	Affected	[CVE-2021-45256]

Original provider fields

{
  "package_releases": [
    {
      "name": "nasm",
      "status": "vulnerable",
      "release": "sid",
      "version": "3.01-1"
    },
    {
      "name": "nasm",
      "status": "vulnerable",
      "release": "forky",
      "version": "3.01-1"
    },
    {
      "name": "nasm",
      "status": "vulnerable",
      "release": "trixie",
      "version": "2.16.03-1"
    },
    {
      "name": "nasm",
      "status": "vulnerable",
      "release": "bookworm",
      "version": "2.16.01-1"
    }
  ],
  "fixed_versions": [
    {
      "bug": null,
      "name": "nasm",
      "type": "source",
      "origin": null,
      "release": "sid",
      "urgency": "unimportant",
      "fixed_version": ""
    },
    {
      "bug": null,
      "name": "nasm",
      "type": "source",
      "origin": null,
      "release": "forky",
      "urgency": "unimportant",
      "fixed_version": ""
    },
    {
      "bug": null,
      "name": "nasm",
      "type": "source",
      "origin": null,
      "release": "trixie",
      "urgency": "unimportant",
      "fixed_version": ""
    },
    {
      "bug": null,
      "name": "nasm",
      "type": "source",
      "origin": null,
      "release": "bookworm",
      "urgency": "unimportant",
      "fixed_version": ""
    }
  ],
  "distribution_packages": [
    {
      "name": "nasm",
      "fixed_version": "not yet fixed",
      "applicability_unknown": true
    }
  ]
}

OpenFactory catalog packages

Die Paketzuordnung läuft.

[Debian 12 (Bookworm)]

[nasm]Unbekannt
Details (2)
- 2.16.01-1 · amd64 · bookworm
  Betroffen
  dsa · nasm · debian · bookworm; dsa · nasm · debian · 12
- 2.16.01-1 · arm64 · bookworm
  Betroffen
  dsa · nasm · debian · bookworm; dsa · nasm · debian · 12

[Debian 13 (Trixie)]

[nasm]Unbekannt
Details (2)
- 2.16.03-1 · amd64 · trixie
  Betroffen
  dsa · nasm · debian · 13
- 2.16.03-1 · arm64 · trixie
  Betroffen
  dsa · nasm · debian · 13

Beobachtet: Oct 23, 2026, 6:03:52 PM UTC

Referenzen

[Debian Security Tracker] · [FIRST EPSS] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX]