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DEBIAN-CVE-2026-31972

Type: advisorySource: OSV1 source record

SAMtools is a program for reading, manipulating and writing bioinformatics file formats. The `mpileup` command outputs DNA sequences that have been aligned against a known reference. On each output line it writes the reference position, optionally the reference DNA base at that position (obtained from a separate file) and all of the DNA bases that aligned to that position. As the output is ordered by position, reference data that is no longer needed is discarded once it has been printed out. Under certain conditions the data could be discarded too early, leading to an attempt to read from a pointer to freed memory. This bug may allow information about program state to be leaked. It may also cause a program crash through an attempt to access invalid memory. This bug is fixed in versions 1.21.1 and 1.22. There is no workaround for this issue.

Announced Source revision 1
Original source ↗

DEBIAN-CVE-2026-31972

Primary source · Revision 1

Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.

Security context

Source reference: osv:DEBIAN-CVE-2026-31972

samtools

Source reference: /affected/0/package/name

Affected versions
1.16.1-1

Source reference: /affected/0/versions

1.17-0+exp1

Source reference: /affected/0/versions

1.17-1

Source reference: /affected/0/versions

1.18-1

Source reference: /affected/0/versions

1.19-1

Source reference: /affected/0/versions

1.19.2-1

Source reference: /affected/0/versions

1.20-1

Source reference: /affected/0/versions

1.20-2

Source reference: /affected/0/versions

1.20-3

Source reference: /affected/0/versions

1.21-0+exp1

Source reference: /affected/0/versions

1.21-1

Source reference: /affected/0/versions

1.22.1-1

Source reference: /affected/0/versions

1.24-1

Source reference: /affected/0/versions

1.24-2

Source reference: /affected/0/versions

Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

samtools

Source reference: /affected/1/package/name

Affected versions
1.21-1

Source reference: /affected/1/versions

1.22.1-1

Source reference: /affected/1/versions

1.24-1

Source reference: /affected/1/versions

1.24-2

Source reference: /affected/1/versions

Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

samtools

Source reference: /affected/2/package/name

Affected versions
1.21-1

Source reference: /affected/2/versions

1.22.1-1

Source reference: /affected/2/versions

1.24-1

Source reference: /affected/2/versions

1.24-2

Source reference: /affected/2/versions

Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

Structured affected-version data

Original package identities and version rules from this source.

[
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          }
        ]
      }
    ],
    "package": {
      "name": "samtools",
      "purl": "pkg:deb/debian/samtools?arch=source&distro=bookworm",
      "ecosystem": "Debian:12"
    },
    "versions": [
      "1.16.1-1",
      "1.17-0+exp1",
      "1.17-1",
      "1.18-1",
      "1.19-1",
      "1.19.2-1",
      "1.20-1",
      "1.20-2",
      "1.20-3",
      "1.21-0+exp1",
      "1.21-1",
      "1.22.1-1",
      "1.24-1",
      "1.24-2"
    ],
    "database_specific": {
      "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-31972.json"
    },
    "ecosystem_specific": {
      "urgency": "unimportant"
    }
  },
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          }
        ]
      }
    ],
    "package": {
      "name": "samtools",
      "purl": "pkg:deb/debian/samtools?arch=source&distro=trixie",
      "ecosystem": "Debian:13"
    },
    "versions": [
      "1.21-1",
      "1.22.1-1",
      "1.24-1",
      "1.24-2"
    ],
    "database_specific": {
      "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-31972.json"
    },
    "ecosystem_specific": {
      "urgency": "unimportant"
    }
  },
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          }
        ]
      }
    ],
    "package": {
      "name": "samtools",
      "purl": "pkg:deb/debian/samtools?arch=source&distro=forky",
      "ecosystem": "Debian:14"
    },
    "versions": [
      "1.21-1",
      "1.22.1-1",
      "1.24-1",
      "1.24-2"
    ],
    "database_specific": {
      "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-31972.json"
    },
    "ecosystem_specific": {
      "urgency": "unimportant"
    }
  }
]

Publisher severity

No explicit severity was provided.

Event
#57505 · Revision 1
Added to Heist Feed
Publisher date
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