CVE catalog

CVE-2021-23159

sox affected and fixed versions

A vulnerability was found in SoX, where a heap-buffer-overflow occurs in function lsx_read_w_buf() in formats_i.c file. The vulnerability is exploitable with a crafted file, that could cause an application to crash.

Severity: Medium · CVSS 4CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Published: Apr 20, 2021, 12:00:00 AM UTC
Source: [NVD] · [CVE record]
EPSS: 0.49% · Oct 27, 2026

Projects and upstream resources

[sox][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	sox	`14.4.2+git20190427-3.2`	FixedDistribution-reported fixed boundary	[CVE-2021-23159]
Debiantrixie	sox	`14.4.2+git20190427-5`	Fixed	[CVE-2021-23159]
Debianbookworm	sox	`14.4.2+git20190427-3.2`	FixedDistribution-reported fixed boundary	[CVE-2021-23159]
Debianbookworm	sox	`14.4.2+git20190427-3.5`	Fixed	[CVE-2021-23159]

Showing 4 fix observations. All 19 observations, including unknown and conflicting reports, are available below.

Provider details and historical evidence

Distribution / release	Package	Version	Status	Source
Debianbookworm	sox	`14.4.2+git20190427-3.2`	FixedDistribution-reported fixed boundary	[CVE-2021-23159]
Debianbookworm	sox	`14.4.2+git20190427-3.5`	Fixed	[CVE-2021-23159]
Debiantrixie	sox	`14.4.2+git20190427-3.2`	FixedDistribution-reported fixed boundary	[CVE-2021-23159]
Debiantrixie	sox	`14.4.2+git20190427-5`	Fixed	[CVE-2021-23159]
Ubuntu18.04	sox	`14.4.1-5build1`	UnknownSource applicability is not established	[UBUNTU-CVE-2021-23159]Apr 22, 2026, 12:48:23 PM UTC
Ubuntu18.04	sox	`14.4.2-2`	UnknownSource applicability is not established	[UBUNTU-CVE-2021-23159]Apr 22, 2026, 12:48:23 PM UTC
Ubuntu18.04	sox	`14.4.2-3`	UnknownSource applicability is not established	[UBUNTU-CVE-2021-23159]Apr 22, 2026, 12:48:23 PM UTC
Ubuntu18.04	sox	`14.4.2-3ubuntu0.18.04.1`	UnknownSource applicability is not established	[UBUNTU-CVE-2021-23159]Apr 22, 2026, 12:48:23 PM UTC
Ubuntu18.04	sox	`14.4.2-3ubuntu0.18.04.2`	UnknownSource applicability is not established	[UBUNTU-CVE-2021-23159]Apr 22, 2026, 12:48:23 PM UTC
Ubuntu20.04	sox	`14.4.2+git20190427-1build1`	UnknownSource applicability is not established	[UBUNTU-CVE-2021-23159]Apr 22, 2026, 12:48:23 PM UTC
Ubuntu20.04	sox	`14.4.2+git20190427-2`	UnknownSource applicability is not established	[UBUNTU-CVE-2021-23159]Apr 22, 2026, 12:48:23 PM UTC
Ubuntu20.04	sox	`14.4.2+git20190427-2+deb11u1build0.20.04.1`	UnknownSource applicability is not established	[UBUNTU-CVE-2021-23159]Apr 22, 2026, 12:48:23 PM UTC
Ubuntu22.04	sox	`14.4.2+git20190427-2`	UnknownSource applicability is not established	[UBUNTU-CVE-2021-23159]Apr 22, 2026, 12:48:23 PM UTC
Ubuntu22.04	sox	`14.4.2+git20190427-2+deb11u1build0.22.04.1`	UnknownSource applicability is not established	[UBUNTU-CVE-2021-23159]Apr 22, 2026, 12:48:23 PM UTC
Ubuntupro	sox	`14.4.1-5`	UnknownSource applicability is not established	[UBUNTU-CVE-2021-23159]Apr 22, 2026, 12:48:23 PM UTC
Ubuntupro	sox	`14.4.1-5+deb8u4ubuntu0.1`	UnknownSource applicability is not established	[UBUNTU-CVE-2021-23159]Apr 22, 2026, 12:48:23 PM UTC
Ubuntupro	sox	`14.4.1-5+deb8u4ubuntu0.1+esm1`	UnknownSource applicability is not established	[UBUNTU-CVE-2021-23159]Apr 22, 2026, 12:48:23 PM UTC
Ubuntupro	sox	`14.4.1-5ubuntu0.1`	UnknownSource applicability is not established	[UBUNTU-CVE-2021-23159]Apr 22, 2026, 12:48:23 PM UTC
Ubuntupro	sox	`14.4.1-5ubuntu0.1+esm1`	UnknownSource applicability is not established	[UBUNTU-CVE-2021-23159]Apr 22, 2026, 12:48:23 PM UTC

Original provider fields

{
  "package_releases": [
    {
      "name": "sox",
      "status": "fixed",
      "release": "trixie",
      "version": "14.4.2+git20190427-5"
    },
    {
      "name": "sox",
      "status": "fixed",
      "release": "bookworm",
      "version": "14.4.2+git20190427-3.5"
    }
  ],
  "fixed_versions": [
    {
      "bug": 1021133,
      "name": "sox",
      "type": "source",
      "origin": null,
      "release": "trixie",
      "urgency": "not yet assigned",
      "fixed_version": "14.4.2+git20190427-3.2"
    },
    {
      "bug": 1021133,
      "name": "sox",
      "type": "source",
      "origin": null,
      "release": "bookworm",
      "urgency": "not yet assigned",
      "fixed_version": "14.4.2+git20190427-3.2"
    }
  ],
  "distribution_packages": [
    {
      "name": "sox",
      "distro": "ubuntu",
      "ranges": [
        {
          "type": "ECOSYSTEM",
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "14.4.1-5+deb8u4ubuntu0.1+esm1"
            }
          ]
        }
      ],
      "release": "pro",
      "versions": [
        "14.4.1-5",
        "14.4.1-5ubuntu0.1",
        "14.4.1-5ubuntu0.1+esm1",
        "14.4.1-5+deb8u4ubuntu0.1"
      ],
      "ecosystem": "deb",
      "provider_url": "https://osv.dev/vulnerability/UBUNTU-CVE-2021-23159",
      "fixed_version": "14.4.1-5+deb8u4ubuntu0.1+esm1",
      "provider_source": "pypi",
      "provider_record_id": "UBUNTU-CVE-2021-23159",
      "provider_updated_at": "2026-04-22T12:48:23.664591Z",
      "applicability_unknown": true
    },
    {
      "name": "sox",
      "distro": "ubuntu",
      "ranges": [
        {
          "type": "ECOSYSTEM",
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "14.4.2-3ubuntu0.18.04.2"
            }
          ]
        }
      ],
      "release": "18.04",
      "versions": [
        "14.4.1-5build1",
        "14.4.2-2",
        "14.4.2-3",
        "14.4.2-3ubuntu0.18.04.1"
      ],
      "ecosystem": "deb",
      "provider_url": "https://osv.dev/vulnerability/UBUNTU-CVE-2021-23159",
      "fixed_version": "14.4.2-3ubuntu0.18.04.2",
      "provider_source": "pypi",
      "provider_record_id": "UBUNTU-CVE-2021-23159",
      "provider_updated_at": "2026-04-22T12:48:23.664591Z",
      "applicability_unknown": true
    },
    {
      "name": "sox",
      "distro": "ubuntu",
      "ranges": [
        {
          "type": "ECOSYSTEM",
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "14.4.2+git20190427-2+deb11u1build0.20.04.1"
            }
          ]
        }
      ],
      "release": "20.04",
      "versions": [
        "14.4.2+git20190427-1build1",
        "14.4.2+git20190427-2"
      ],
      "ecosystem": "deb",
      "provider_url": "https://osv.dev/vulnerability/UBUNTU-CVE-2021-23159",
      "fixed_version": "14.4.2+git20190427-2+deb11u1build0.20.04.1",
      "provider_source": "pypi",
      "provider_record_id": "UBUNTU-CVE-2021-23159",
      "provider_updated_at": "2026-04-22T12:48:23.664591Z",
      "applicability_unknown": true
    },
    {
      "name": "sox",
      "distro": "ubuntu",
      "ranges": [
        {
          "type": "ECOSYSTEM",
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "14.4.2+git20190427-2+deb11u1build0.22.04.1"
            }
          ]
        }
      ],
      "release": "22.04",
      "versions": [
        "14.4.2+git20190427-2"
      ],
      "ecosystem": "deb",
      "provider_url": "https://osv.dev/vulnerability/UBUNTU-CVE-2021-23159",
      "fixed_version": "14.4.2+git20190427-2+deb11u1build0.22.04.1",
      "provider_source": "pypi",
      "provider_record_id": "UBUNTU-CVE-2021-23159",
      "provider_updated_at": "2026-04-22T12:48:23.664591Z",
      "applicability_unknown": true
    }
  ]
}

[Debian bug #1021133]

OpenFactory catalog packages

Matching against OpenFactory catalog package versions is in progress.

[Debian 12 (Bookworm)]

[libsox3]Unknown
Source package: [sox]
Details (2)
- 14.4.2+git20190427-3.5 · amd64 · bookworm
  Fixed · Fixed: 14.4.2+git20190427-3.2
  dsa · sox · debian · bookworm; dsa · sox · debian · 12
- 14.4.2+git20190427-3.5 · arm64 · bookworm
  Fixed · Fixed: 14.4.2+git20190427-3.2
  dsa · sox · debian · bookworm; dsa · sox · debian · 12
[libsox-dev]Unknown
Source package: [sox]
Details (2)
- 14.4.2+git20190427-3.5 · amd64 · bookworm
  Fixed · Fixed: 14.4.2+git20190427-3.2
  dsa · sox · debian · bookworm; dsa · sox · debian · 12
- 14.4.2+git20190427-3.5 · arm64 · bookworm
  Fixed · Fixed: 14.4.2+git20190427-3.2
  dsa · sox · debian · bookworm; dsa · sox · debian · 12
[libsox-fmt-all]Unknown
Source package: [sox]
Details (2)
- 14.4.2+git20190427-3.5 · amd64 · bookworm
  Fixed · Fixed: 14.4.2+git20190427-3.2
  dsa · sox · debian · bookworm; dsa · sox · debian · 12
- 14.4.2+git20190427-3.5 · arm64 · bookworm
  Fixed · Fixed: 14.4.2+git20190427-3.2
  dsa · sox · debian · bookworm; dsa · sox · debian · 12
[libsox-fmt-alsa]Unknown
Source package: [sox]
Details (2)
- 14.4.2+git20190427-3.5 · amd64 · bookworm
  Fixed · Fixed: 14.4.2+git20190427-3.2
  dsa · sox · debian · bookworm; dsa · sox · debian · 12
- 14.4.2+git20190427-3.5 · arm64 · bookworm
  Fixed · Fixed: 14.4.2+git20190427-3.2
  dsa · sox · debian · bookworm; dsa · sox · debian · 12
[libsox-fmt-ao]Unknown
Source package: [sox]
Details (2)
- 14.4.2+git20190427-3.5 · amd64 · bookworm
  Fixed · Fixed: 14.4.2+git20190427-3.2
  dsa · sox · debian · bookworm; dsa · sox · debian · 12
- 14.4.2+git20190427-3.5 · arm64 · bookworm
  Fixed · Fixed: 14.4.2+git20190427-3.2
  dsa · sox · debian · bookworm; dsa · sox · debian · 12
[libsox-fmt-base]Unknown
Source package: [sox]
Details (2)
- 14.4.2+git20190427-3.5 · amd64 · bookworm
  Fixed · Fixed: 14.4.2+git20190427-3.2
  dsa · sox · debian · bookworm; dsa · sox · debian · 12
- 14.4.2+git20190427-3.5 · arm64 · bookworm
  Fixed · Fixed: 14.4.2+git20190427-3.2
  dsa · sox · debian · bookworm; dsa · sox · debian · 12
[libsox-fmt-mp3]Unknown
Source package: [sox]
Details (2)
- 14.4.2+git20190427-3.5 · amd64 · bookworm
  Fixed · Fixed: 14.4.2+git20190427-3.2
  dsa · sox · debian · bookworm; dsa · sox · debian · 12
- 14.4.2+git20190427-3.5 · arm64 · bookworm
  Fixed · Fixed: 14.4.2+git20190427-3.2
  dsa · sox · debian · bookworm; dsa · sox · debian · 12
[libsox-fmt-oss]Unknown
Source package: [sox]
Details (2)
- 14.4.2+git20190427-3.5 · amd64 · bookworm
  Fixed · Fixed: 14.4.2+git20190427-3.2
  dsa · sox · debian · bookworm; dsa · sox · debian · 12
- 14.4.2+git20190427-3.5 · arm64 · bookworm
  Fixed · Fixed: 14.4.2+git20190427-3.2
  dsa · sox · debian · bookworm; dsa · sox · debian · 12
[libsox-fmt-pulse]Unknown
Source package: [sox]
Details (2)
- 14.4.2+git20190427-3.5 · amd64 · bookworm
  Fixed · Fixed: 14.4.2+git20190427-3.2
  dsa · sox · debian · bookworm; dsa · sox · debian · 12
- 14.4.2+git20190427-3.5 · arm64 · bookworm
  Fixed · Fixed: 14.4.2+git20190427-3.2
  dsa · sox · debian · bookworm; dsa · sox · debian · 12
[sox]Unknown
Details (2)
- 14.4.2+git20190427-3.5 · amd64 · bookworm
  Fixed · Fixed: 14.4.2+git20190427-3.2
  dsa · sox · debian · bookworm; dsa · sox · debian · 12
- 14.4.2+git20190427-3.5 · arm64 · bookworm
  Fixed · Fixed: 14.4.2+git20190427-3.2
  dsa · sox · debian · bookworm; dsa · sox · debian · 12

[Debian 13 (Trixie)]

[libsox3]Unknown
Source package: [sox]
Details (2)
- 14.4.2+git20190427-5+b3 · amd64 · trixie
  Fixed · Fixed: 14.4.2+git20190427-3.2
  dsa · sox · debian · 13
- 14.4.2+git20190427-5+b3 · arm64 · trixie
  Fixed · Fixed: 14.4.2+git20190427-3.2
  dsa · sox · debian · 13
[libsox-dev]Unknown
Source package: [sox]
Details (2)
- 14.4.2+git20190427-5+b3 · amd64 · trixie
  Fixed · Fixed: 14.4.2+git20190427-3.2
  dsa · sox · debian · 13
- 14.4.2+git20190427-5+b3 · arm64 · trixie
  Fixed · Fixed: 14.4.2+git20190427-3.2
  dsa · sox · debian · 13
[libsox-fmt-all]Unknown
Source package: [sox]
Details (2)
- 14.4.2+git20190427-5+b3 · amd64 · trixie
  Fixed · Fixed: 14.4.2+git20190427-3.2
  dsa · sox · debian · 13
- 14.4.2+git20190427-5+b3 · arm64 · trixie
  Fixed · Fixed: 14.4.2+git20190427-3.2
  dsa · sox · debian · 13
[libsox-fmt-alsa]Unknown
Source package: [sox]
Details (2)
- 14.4.2+git20190427-5+b3 · amd64 · trixie
  Fixed · Fixed: 14.4.2+git20190427-3.2
  dsa · sox · debian · 13
- 14.4.2+git20190427-5+b3 · arm64 · trixie
  Fixed · Fixed: 14.4.2+git20190427-3.2
  dsa · sox · debian · 13
[libsox-fmt-ao]Unknown
Source package: [sox]
Details (2)
- 14.4.2+git20190427-5+b3 · amd64 · trixie
  Fixed · Fixed: 14.4.2+git20190427-3.2
  dsa · sox · debian · 13
- 14.4.2+git20190427-5+b3 · arm64 · trixie
  Fixed · Fixed: 14.4.2+git20190427-3.2
  dsa · sox · debian · 13
[libsox-fmt-base]Unknown
Source package: [sox]
Details (2)
- 14.4.2+git20190427-5+b3 · amd64 · trixie
  Fixed · Fixed: 14.4.2+git20190427-3.2
  dsa · sox · debian · 13
- 14.4.2+git20190427-5+b3 · arm64 · trixie
  Fixed · Fixed: 14.4.2+git20190427-3.2
  dsa · sox · debian · 13
[libsox-fmt-mp3]Unknown
Source package: [sox]
Details (2)
- 14.4.2+git20190427-5+b3 · amd64 · trixie
  Fixed · Fixed: 14.4.2+git20190427-3.2
  dsa · sox · debian · 13
- 14.4.2+git20190427-5+b3 · arm64 · trixie
  Fixed · Fixed: 14.4.2+git20190427-3.2
  dsa · sox · debian · 13
[libsox-fmt-opus]Unknown
Source package: [sox]
Details (2)
- 14.4.2+git20190427-5+b3 · amd64 · trixie
  Fixed · Fixed: 14.4.2+git20190427-3.2
  dsa · sox · debian · 13
- 14.4.2+git20190427-5+b3 · arm64 · trixie
  Fixed · Fixed: 14.4.2+git20190427-3.2
  dsa · sox · debian · 13
[libsox-fmt-oss]Unknown
Source package: [sox]
Details (2)
- 14.4.2+git20190427-5+b3 · amd64 · trixie
  Fixed · Fixed: 14.4.2+git20190427-3.2
  dsa · sox · debian · 13
- 14.4.2+git20190427-5+b3 · arm64 · trixie
  Fixed · Fixed: 14.4.2+git20190427-3.2
  dsa · sox · debian · 13
[libsox-fmt-pulse]Unknown
Source package: [sox]
Details (2)
- 14.4.2+git20190427-5+b3 · amd64 · trixie
  Fixed · Fixed: 14.4.2+git20190427-3.2
  dsa · sox · debian · 13
- 14.4.2+git20190427-5+b3 · arm64 · trixie
  Fixed · Fixed: 14.4.2+git20190427-3.2
  dsa · sox · debian · 13

Next results

Observed: Oct 23, 2026, 5:54:52 PM UTC

References

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