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DEBIAN-CVE-2026-54411

Type: advisorySource: OSV1 source record

Linux-PAM through 1.7.2 contains an observable timing discrepancy (CWE-208) in the pam_userdb module's plaintext-password comparison path in modules/pam_userdb/pam_userdb.c that allows a local or network-adjacent attacker able to repeatedly drive authentication through a calling service to recover the plaintext password of a target account by measuring response-timing differences.

Announced Source revision 1
Original source ↗

DEBIAN-CVE-2026-54411

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-2026-54411

pam

Source reference: /affected/0/package/name

Affected versions
1.5.2-6

Source reference: /affected/0/versions

1.5.2-6+deb12u1

Source reference: /affected/0/versions

1.5.2-6+deb12u2

Source reference: /affected/0/versions

1.5.2-7

Source reference: /affected/0/versions

1.5.2-8

Source reference: /affected/0/versions

1.5.2-9

Source reference: /affected/0/versions

1.5.2-9.1

Source reference: /affected/0/versions

1.5.3-1

Source reference: /affected/0/versions

1.5.3-2

Source reference: /affected/0/versions

1.5.3-3

Source reference: /affected/0/versions

1.5.3-4

Source reference: /affected/0/versions

1.5.3-5

Source reference: /affected/0/versions

1.5.3-6

Source reference: /affected/0/versions

1.5.3-6+hurd.1

Source reference: /affected/0/versions

1.5.3-7

Source reference: /affected/0/versions

1.7.0-1

Source reference: /affected/0/versions

1.7.0-2

Source reference: /affected/0/versions

1.7.0-2+hurd.1

Source reference: /affected/0/versions

1.7.0-3

Source reference: /affected/0/versions

1.7.0-4

Source reference: /affected/0/versions

1.7.0-5

Source reference: /affected/0/versions

1.7.0-6

Source reference: /affected/0/versions

1.7.0-7

Source reference: /affected/0/versions

1.7.0-8

Source reference: /affected/0/versions

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

pam

Source reference: /affected/1/package/name

Affected versions
1.7.0-5

Source reference: /affected/1/versions

1.7.0-6

Source reference: /affected/1/versions

1.7.0-7

Source reference: /affected/1/versions

1.7.0-8

Source reference: /affected/1/versions

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

pam

Source reference: /affected/2/package/name

Affected versions
1.7.0-5

Source reference: /affected/2/versions

1.7.0-6

Source reference: /affected/2/versions

1.7.0-7

Source reference: /affected/2/versions

1.7.0-8

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": "pam",
      "purl": "pkg:deb/debian/pam?arch=source&distro=bookworm",
      "ecosystem": "Debian:12"
    },
    "versions": [
      "1.5.2-6",
      "1.5.2-6+deb12u1",
      "1.5.2-6+deb12u2",
      "1.5.2-7",
      "1.5.2-8",
      "1.5.2-9",
      "1.5.2-9.1",
      "1.5.3-1",
      "1.5.3-2",
      "1.5.3-3",
      "1.5.3-4",
      "1.5.3-5",
      "1.5.3-6",
      "1.5.3-6+hurd.1",
      "1.5.3-7",
      "1.7.0-1",
      "1.7.0-2",
      "1.7.0-2+hurd.1",
      "1.7.0-3",
      "1.7.0-4",
      "1.7.0-5",
      "1.7.0-6",
      "1.7.0-7",
      "1.7.0-8"
    ],
    "database_specific": {
      "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-54411.json"
    },
    "ecosystem_specific": {
      "urgency": "not yet assigned"
    }
  },
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          }
        ]
      }
    ],
    "package": {
      "name": "pam",
      "purl": "pkg:deb/debian/pam?arch=source&distro=trixie",
      "ecosystem": "Debian:13"
    },
    "versions": [
      "1.7.0-5",
      "1.7.0-6",
      "1.7.0-7",
      "1.7.0-8"
    ],
    "database_specific": {
      "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-54411.json"
    },
    "ecosystem_specific": {
      "urgency": "not yet assigned"
    }
  },
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          }
        ]
      }
    ],
    "package": {
      "name": "pam",
      "purl": "pkg:deb/debian/pam?arch=source&distro=forky",
      "ecosystem": "Debian:14"
    },
    "versions": [
      "1.7.0-5",
      "1.7.0-6",
      "1.7.0-7",
      "1.7.0-8"
    ],
    "database_specific": {
      "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-54411.json"
    },
    "ecosystem_specific": {
      "urgency": "not yet assigned"
    }
  }
]

Publisher severity

No explicit severity was provided.

Event
#57848 · Revision 1
Added to Heist Feed
Publisher date
Read the original announcement