CVE catalog

CVE-2021-33457

yasm affected and fixed versions

[CVE catalog]

An issue was discovered in yasm version 1.3.0. There is a NULL pointer dereference in expand_mmac_params() in modules/preprocs/nasm/nasm-pp.c.

Severity
Medium · CVSS 5.5CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Published
Source
[NVD] · [CVE record]
EPSS
0.33% · Oct 27, 2026

Projects and upstream resources

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 / releasePackageVersionStatusSource
DebiantrixieyasmNot reportedAffectedDistribution reports no fix[CVE-2021-33457]
Debiantrixieyasm1.3.0-7Affected[CVE-2021-33457]
DebiansidyasmNot reportedAffectedDistribution reports no fix[CVE-2021-33457]
Debiansidyasm1.3.0-8Affected[CVE-2021-33457]
DebianforkyyasmNot reportedAffectedDistribution reports no fix[CVE-2021-33457]
Debianforkyyasm1.3.0-8Affected[CVE-2021-33457]
DebianbookwormyasmNot reportedAffectedDistribution reports no fix[CVE-2021-33457]
Debianbookwormyasm1.3.0-4Affected[CVE-2021-33457]
UnknownRelease not reportedyasmNot reportedUnknownSource applicability is not establishedProvider not reported
Provider details and historical evidence
Distribution / releasePackageVersionStatusSource
UnknownRelease not reportedyasmNot reportedUnknownSource applicability is not establishedProvider not reported
DebianbookwormyasmNot reportedAffectedDistribution reports no fix[CVE-2021-33457]
Debianbookwormyasm1.3.0-4Affected[CVE-2021-33457]
DebianforkyyasmNot reportedAffectedDistribution reports no fix[CVE-2021-33457]
Debianforkyyasm1.3.0-8Affected[CVE-2021-33457]
DebiansidyasmNot reportedAffectedDistribution reports no fix[CVE-2021-33457]
Debiansidyasm1.3.0-8Affected[CVE-2021-33457]
DebiantrixieyasmNot reportedAffectedDistribution reports no fix[CVE-2021-33457]
Debiantrixieyasm1.3.0-7Affected[CVE-2021-33457]
Original provider fields
{
  "package_releases": [
    {
      "name": "yasm",
      "status": "vulnerable",
      "release": "sid",
      "version": "1.3.0-8"
    },
    {
      "name": "yasm",
      "status": "vulnerable",
      "release": "forky",
      "version": "1.3.0-8"
    },
    {
      "name": "yasm",
      "status": "vulnerable",
      "release": "trixie",
      "version": "1.3.0-7"
    },
    {
      "name": "yasm",
      "status": "vulnerable",
      "release": "bookworm",
      "version": "1.3.0-4"
    }
  ],
  "fixed_versions": [
    {
      "bug": null,
      "name": "yasm",
      "type": "source",
      "origin": null,
      "release": "sid",
      "urgency": "unimportant",
      "fixed_version": ""
    },
    {
      "bug": null,
      "name": "yasm",
      "type": "source",
      "origin": null,
      "release": "forky",
      "urgency": "unimportant",
      "fixed_version": ""
    },
    {
      "bug": null,
      "name": "yasm",
      "type": "source",
      "origin": null,
      "release": "trixie",
      "urgency": "unimportant",
      "fixed_version": ""
    },
    {
      "bug": null,
      "name": "yasm",
      "type": "source",
      "origin": null,
      "release": "bookworm",
      "urgency": "unimportant",
      "fixed_version": ""
    }
  ],
  "distribution_packages": [
    {
      "name": "yasm",
      "fixed_version": "not yet fixed",
      "applicability_unknown": true
    }
  ]
}

OpenFactory catalog packages

Matching against OpenFactory catalog package versions is in progress.

[Debian 12 (Bookworm)]

  • [yasm]Unknown
    Details (2)

    • 1.3.0-4 · amd64 · bookworm

      Affected

      dsa · yasm · debian · bookworm; dsa · yasm · debian · 12

    • 1.3.0-4 · arm64 · bookworm

      Affected

      dsa · yasm · debian · bookworm; dsa · yasm · debian · 12

[Debian 13 (Trixie)]

  • [yasm]Unknown
    Details (2)

    • 1.3.0-7 · amd64 · trixie

      Affected

      dsa · yasm · debian · 13

    • 1.3.0-7 · arm64 · trixie

      Affected

      dsa · yasm · debian · 13

Observed:

References

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