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DEBIAN-CVE-2026-47191

Type: advisorySource: OSV1 source record

kas is a setup tool for bitbake based projects. Prior to version 5.3, when relying solely on a git commit ID (SHA-1 or SHA-256) to qualify if a checkout of a repository is equivalent to the state validated while adding its commit ID to a kas configuration, users may be tricked to check out a branch of the same name from this repository. This implies that the referenced repository has been taken over by an attacker and modified to carry such a branch. SHA-1 commits may also be replaced by creating hash collisions, so the primary impact of this issue is on SHA-256 commit IDs. Version 5.3 fixes the issue. As a workaround, avoid relying solely on the commit ID for integrity validation of a repository that might become under control of a malicious 3rd party. If available, additional validate cryptographically signed commits or tags. Alternatively, mirror the repository to a save place, validate its integrity, and use this instead of the original one.

Announced Source revision 1
Original source ↗

DEBIAN-CVE-2026-47191

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-2026-47191

kas

Source reference: /affected/0/package/name

Affected versions
3.1-2

Source reference: /affected/0/versions

3.2.3-1

Source reference: /affected/0/versions

4.0-1

Source reference: /affected/0/versions

4.3-1

Source reference: /affected/0/versions

4.3.2-1

Source reference: /affected/0/versions

4.4-1

Source reference: /affected/0/versions

4.4-2

Source reference: /affected/0/versions

4.5-1

Source reference: /affected/0/versions

4.5-2

Source reference: /affected/0/versions

4.6-1

Source reference: /affected/0/versions

4.7-1

Source reference: /affected/0/versions

4.8.1-1

Source reference: /affected/0/versions

4.8.1-2

Source reference: /affected/0/versions

4.8.2-1

Source reference: /affected/0/versions

5.0-1

Source reference: /affected/0/versions

5.1-1

Source reference: /affected/0/versions

5.2-1

Source reference: /affected/0/versions

5.3-1

Source reference: /affected/0/versions

5.4-1

Source reference: /affected/0/versions

5.5-1

Source reference: /affected/0/versions

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

kas

Source reference: /affected/1/package/name

Affected versions
4.8.1-2

Source reference: /affected/1/versions

4.8.2-1

Source reference: /affected/1/versions

5.0-1

Source reference: /affected/1/versions

5.1-1

Source reference: /affected/1/versions

5.2-1

Source reference: /affected/1/versions

5.3-1

Source reference: /affected/1/versions

5.4-1

Source reference: /affected/1/versions

5.5-1

Source reference: /affected/1/versions

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

kas

Source reference: /affected/2/package/name

Affected versions
4.8.1-2

Source reference: /affected/2/versions

4.8.2-1

Source reference: /affected/2/versions

5.0-1

Source reference: /affected/2/versions

5.1-1

Source reference: /affected/2/versions

5.2-1

Source reference: /affected/2/versions

Fixed versions
5.3-1

Source reference: /affected/2/ranges

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": "kas",
      "purl": "pkg:deb/debian/kas?arch=source&distro=bookworm",
      "ecosystem": "Debian:12"
    },
    "versions": [
      "3.1-2",
      "3.2.3-1",
      "4.0-1",
      "4.3-1",
      "4.3.2-1",
      "4.4-1",
      "4.4-2",
      "4.5-1",
      "4.5-2",
      "4.6-1",
      "4.7-1",
      "4.8.1-1",
      "4.8.1-2",
      "4.8.2-1",
      "5.0-1",
      "5.1-1",
      "5.2-1",
      "5.3-1",
      "5.4-1",
      "5.5-1"
    ],
    "database_specific": {
      "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-47191.json"
    },
    "ecosystem_specific": {
      "urgency": "not yet assigned"
    }
  },
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          }
        ]
      }
    ],
    "package": {
      "name": "kas",
      "purl": "pkg:deb/debian/kas?arch=source&distro=trixie",
      "ecosystem": "Debian:13"
    },
    "versions": [
      "4.8.1-2",
      "4.8.2-1",
      "5.0-1",
      "5.1-1",
      "5.2-1",
      "5.3-1",
      "5.4-1",
      "5.5-1"
    ],
    "database_specific": {
      "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-47191.json"
    },
    "ecosystem_specific": {
      "urgency": "not yet assigned"
    }
  },
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          },
          {
            "fixed": "5.3-1"
          }
        ]
      }
    ],
    "package": {
      "name": "kas",
      "purl": "pkg:deb/debian/kas?arch=source&distro=forky",
      "ecosystem": "Debian:14"
    },
    "versions": [
      "4.8.1-2",
      "4.8.2-1",
      "5.0-1",
      "5.1-1",
      "5.2-1"
    ],
    "database_specific": {
      "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-47191.json"
    },
    "ecosystem_specific": {
      "urgency": "not yet assigned"
    }
  }
]

Publisher severity

No explicit severity was provided.

Event
#57723 · Revision 1
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Publisher date
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