CVE catalog

CVE-2015-4156

parallel affected and fixed versions

[CVE catalog]

GNU Parallel before 20150522 (Nepal), when using (1) --cat or (2) --fifo with --sshlogin, allows local users to write to arbitrary files via a symlink attack on a temporary file.

Severity
Low
Published
Source
[NVD] · [CVE record]
EPSS
0.37% · 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
Debiantrixieparallel20161222-1FixedDistribution-reported fixed boundary[CVE-2015-4156]
Debiantrixieparallel20240222+ds-2Fixed[CVE-2015-4156]
Debiansidparallel20161222-1FixedDistribution-reported fixed boundary[CVE-2015-4156]
Debiansidparallel20240222+ds-4Fixed[CVE-2015-4156]
Debianforkyparallel20161222-1FixedDistribution-reported fixed boundary[CVE-2015-4156]
Debianforkyparallel20240222+ds-4Fixed[CVE-2015-4156]
Debianbookwormparallel20161222-1FixedDistribution-reported fixed boundary[CVE-2015-4156]
Debianbookwormparallel20221122+ds-2Fixed[CVE-2015-4156]
Ubuntu16.04parallel20161222-1~ubuntu0.16.04.1Fixed[UBUNTU-CVE-2015-4156]

Showing 9 fix observations. All 10 observations, including unknown and conflicting reports, are available below.

Provider details and historical evidence
Distribution / releasePackageVersionStatusSource
Debianbookwormparallel20161222-1FixedDistribution-reported fixed boundary[CVE-2015-4156]
Debianbookwormparallel20221122+ds-2Fixed[CVE-2015-4156]
Debianforkyparallel20161222-1FixedDistribution-reported fixed boundary[CVE-2015-4156]
Debianforkyparallel20240222+ds-4Fixed[CVE-2015-4156]
Debiansidparallel20161222-1FixedDistribution-reported fixed boundary[CVE-2015-4156]
Debiansidparallel20240222+ds-4Fixed[CVE-2015-4156]
Debiantrixieparallel20161222-1FixedDistribution-reported fixed boundary[CVE-2015-4156]
Debiantrixieparallel20240222+ds-2Fixed[CVE-2015-4156]
Ubuntu16.04parallel20141022+ds1-1Affected[UBUNTU-CVE-2015-4156]
Ubuntu16.04parallel20161222-1~ubuntu0.16.04.1Fixed[UBUNTU-CVE-2015-4156]
Original provider fields
{
  "package_releases": [
    {
      "name": "parallel",
      "status": "fixed",
      "release": "sid",
      "version": "20240222+ds-4"
    },
    {
      "name": "parallel",
      "status": "fixed",
      "release": "forky",
      "version": "20240222+ds-4"
    },
    {
      "name": "parallel",
      "status": "fixed",
      "release": "trixie",
      "version": "20240222+ds-2"
    },
    {
      "name": "parallel",
      "status": "fixed",
      "release": "bookworm",
      "version": "20221122+ds-2"
    }
  ],
  "fixed_versions": [
    {
      "bug": 787954,
      "name": "parallel",
      "type": "source",
      "origin": null,
      "release": "sid",
      "urgency": "unimportant",
      "fixed_version": "20161222-1"
    },
    {
      "bug": 787954,
      "name": "parallel",
      "type": "source",
      "origin": null,
      "release": "forky",
      "urgency": "unimportant",
      "fixed_version": "20161222-1"
    },
    {
      "bug": 787954,
      "name": "parallel",
      "type": "source",
      "origin": null,
      "release": "trixie",
      "urgency": "unimportant",
      "fixed_version": "20161222-1"
    },
    {
      "bug": 787954,
      "name": "parallel",
      "type": "source",
      "origin": null,
      "release": "bookworm",
      "urgency": "unimportant",
      "fixed_version": "20161222-1"
    }
  ],
  "distribution_packages": [
    {
      "name": "parallel",
      "distro": "ubuntu",
      "ranges": [
        {
          "type": "ECOSYSTEM",
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "20161222-1~ubuntu0.16.04.1"
            }
          ]
        }
      ],
      "release": "16.04",
      "versions": [
        "20141022+ds1-1"
      ],
      "ecosystem": "deb",
      "provider_url": "https://osv.dev/vulnerability/UBUNTU-CVE-2015-4156",
      "fixed_version": "20161222-1~ubuntu0.16.04.1",
      "provider_source": "pypi",
      "provider_record_id": "UBUNTU-CVE-2015-4156",
      "provider_updated_at": "2025-07-18T16:43:13Z"
    }
  ]
}

[Debian bug #787954]

OpenFactory catalog packages

Matching against OpenFactory catalog package versions is in progress.

[Debian 12 (Bookworm)]

  • [parallel]Unknown
    Details (2)

    • 20221122+ds-2 · all · bookworm

      Fixed · Fixed: 20161222-1

      dsa · parallel · debian · bookworm; dsa · parallel · debian · 12

    • 20221122+ds-2 · all · bookworm

      Fixed · Fixed: 20161222-1

      dsa · parallel · debian · bookworm; dsa · parallel · debian · 12

[Debian 13 (Trixie)]

  • [parallel]Unknown
    Details (2)

    • 20240222+ds-2 · all · trixie

      Fixed · Fixed: 20161222-1

      dsa · parallel · debian · 13

    • 20240222+ds-2 · all · trixie

      Fixed · Fixed: 20161222-1

      dsa · parallel · debian · 13

Observed:

References

[Debian Security Tracker] · [FIRST EPSS] · [OSV Package Vulnerability Database]