UnratedFix available

DEBIAN-CVE-2026-21863

Type: advisorySource: OSV1 source record

Valkey is a distributed key-value database. Prior to versions 9.0.2, 8.1.6, 8.0.7, and 7.2.12, a malicious actor with access to the Valkey clusterbus port can send an invalid packet that may cause an out bound read, which might result in the system crashing. The Valkey clusterbus packet processing code does not validate that a clusterbus ping extension packet is located within buffer of the clusterbus packet before attempting to read it. Versions 9.0.2, 8.1.6, 8.0.7, and 7.2.12 fix the issue. As an additional mitigation, don't expose the cluster bus connection directly to end users, and protect the connection with its own network ACLs.

Announced 23 Feb 2026Source revision 1

Original source ↗

DEBIAN-CVE-2026-21863

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-2026-21863

redict

Source reference: /affected/0/package/name

Affected versions: 7.3.0+ds-1
Source reference: /affected/0/versions
7.3.0+ds-2
Source reference: /affected/0/versions
7.3.0+ds-3
Source reference: /affected/0/versions
7.3.0+ds-3~bpo12+1
Source reference: /affected/0/versions
7.3.1+ds-1
Source reference: /affected/0/versions
7.3.2+ds-1
Source reference: /affected/0/versions
7.3.2+ds-1~bpo12+1
Source reference: /affected/0/versions
7.3.5+ds-1
Source reference: /affected/0/versions
7.3.5+ds-1~bpo12+1
Source reference: /affected/0/versions
7.3.6+ds-1
Source reference: /affected/0/versions
7.3.6+ds-1~bpo12+1
Source reference: /affected/0/versions
7.3.6+ds-1~bpo13+1
Source reference: /affected/0/versions
7.3.6+ds-2~bpo12+1
Source reference: /affected/0/versions
7.3.6+ds-2~bpo13+1
Source reference: /affected/0/versions
Fixed versions: 7.3.6+ds-2
Source reference: /affected/0/ranges
Prerequisites: Not stated in this record

redis

Source reference: /affected/1/package/name

Affected versions: 5:7.0.11-1
Source reference: /affected/1/versions
5:7.0.11-1+deb12u1
Source reference: /affected/1/versions
5:7.0.12-1
Source reference: /affected/1/versions
5:7.0.12-2
Source reference: /affected/1/versions
5:7.0.13-1
Source reference: /affected/1/versions
5:7.0.13-2
Source reference: /affected/1/versions
5:7.0.14-1
Source reference: /affected/1/versions
5:7.0.14-2
Source reference: /affected/1/versions
5:7.0.15-1~deb12u1
Source reference: /affected/1/versions
5:7.0.15-1~deb12u2
Source reference: /affected/1/versions
5:7.0.15-1~deb12u3
Source reference: /affected/1/versions
5:7.0.15-1~deb12u4
Source reference: /affected/1/versions
5:7.0.15-1~deb12u5
Source reference: /affected/1/versions
5:7.0.15-1~deb12u6
Source reference: /affected/1/versions
Fixed versions: 5:7.0.15-1~deb12u7
Source reference: /affected/1/ranges
Prerequisites: Not stated in this record

redis

Source reference: /affected/2/package/name

Affected versions: 5:8.0.2-3
Source reference: /affected/2/versions
5:8.0.2-3+deb13u1
Source reference: /affected/2/versions
Fixed versions: 5:8.0.2-3+deb13u2
Source reference: /affected/2/ranges
Prerequisites: Not stated in this record

redis

Source reference: /affected/3/package/name

Affected versions: 5:8.0.2-3
Source reference: /affected/3/versions
5:8.0.4-1
Source reference: /affected/3/versions
5:8.0.5-1
Source reference: /affected/3/versions
Fixed versions: 5:8.0.6-1
Source reference: /affected/3/ranges
Prerequisites: Not stated in this record

valkey

Source reference: /affected/4/package/name

Affected versions: 8.1.1+dfsg1-3
Source reference: /affected/4/versions
8.1.1+dfsg1-3+deb13u1
Source reference: /affected/4/versions
Fixed versions: 8.1.1+dfsg1-3+deb13u2
Source reference: /affected/4/ranges
Prerequisites: Not stated in this record

valkey

Source reference: /affected/5/package/name

Affected versions: 8.1.1+dfsg1-3
Source reference: /affected/5/versions
8.1.4+dfsg1-1
Source reference: /affected/5/versions
Fixed versions: 8.1.4+dfsg1-2
Source reference: /affected/5/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"
          },
          {
            "fixed": "7.3.6+ds-2"
          }
        ]
      }
    ],
    "package": {
      "name": "redict",
      "purl": "pkg:deb/debian/redict?arch=source&distro=forky",
      "ecosystem": "Debian:14"
    },
    "versions": [
      "7.3.0+ds-1",
      "7.3.0+ds-2",
      "7.3.0+ds-3",
      "7.3.0+ds-3~bpo12+1",
      "7.3.1+ds-1",
      "7.3.2+ds-1",
      "7.3.2+ds-1~bpo12+1",
      "7.3.5+ds-1",
      "7.3.5+ds-1~bpo12+1",
      "7.3.6+ds-1",
      "7.3.6+ds-1~bpo12+1",
      "7.3.6+ds-1~bpo13+1",
      "7.3.6+ds-2~bpo12+1",
      "7.3.6+ds-2~bpo13+1"
    ],
    "database_specific": {
      "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-21863.json"
    },
    "ecosystem_specific": {
      "urgency": "not yet assigned"
    }
  },
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          },
          {
            "fixed": "5:7.0.15-1~deb12u7"
          }
        ]
      }
    ],
    "package": {
      "name": "redis",
      "purl": "pkg:deb/debian/redis?arch=source&distro=bookworm",
      "ecosystem": "Debian:12"
    },
    "versions": [
      "5:7.0.11-1",
      "5:7.0.11-1+deb12u1",
      "5:7.0.12-1",
      "5:7.0.12-2",
      "5:7.0.13-1",
      "5:7.0.13-2",
      "5:7.0.14-1",
      "5:7.0.14-2",
      "5:7.0.15-1~deb12u1",
      "5:7.0.15-1~deb12u2",
      "5:7.0.15-1~deb12u3",
      "5:7.0.15-1~deb12u4",
      "5:7.0.15-1~deb12u5",
      "5:7.0.15-1~deb12u6"
    ],
    "database_specific": {
      "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-21863.json"
    },
    "ecosystem_specific": {
      "urgency": "not yet assigned"
    }
  },
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          },
          {
            "fixed": "5:8.0.2-3+deb13u2"
          }
        ]
      }
    ],
    "package": {
      "name": "redis",
      "purl": "pkg:deb/debian/redis?arch=source&distro=trixie",
      "ecosystem": "Debian:13"
    },
    "versions": [
      "5:8.0.2-3",
      "5:8.0.2-3+deb13u1"
    ],
    "database_specific": {
      "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-21863.json"
    },
    "ecosystem_specific": {
      "urgency": "not yet assigned"
    }
  },
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          },
          {
            "fixed": "5:8.0.6-1"
          }
        ]
      }
    ],
    "package": {
      "name": "redis",
      "purl": "pkg:deb/debian/redis?arch=source&distro=forky",
      "ecosystem": "Debian:14"
    },
    "versions": [
      "5:8.0.2-3",
      "5:8.0.4-1",
      "5:8.0.5-1"
    ],
    "database_specific": {
      "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-21863.json"
    },
    "ecosystem_specific": {
      "urgency": "not yet assigned"
    }
  },
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          },
          {
            "fixed": "8.1.1+dfsg1-3+deb13u2"
          }
        ]
      }
    ],
    "package": {
      "name": "valkey",
      "purl": "pkg:deb/debian/valkey?arch=source&distro=trixie",
      "ecosystem": "Debian:13"
    },
    "versions": [
      "8.1.1+dfsg1-3",
      "8.1.1+dfsg1-3+deb13u1"
    ],
    "database_specific": {
      "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-21863.json"
    },
    "ecosystem_specific": {
      "urgency": "not yet assigned"
    }
  },
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          },
          {
            "fixed": "8.1.4+dfsg1-2"
          }
        ]
      }
    ],
    "package": {
      "name": "valkey",
      "purl": "pkg:deb/debian/valkey?arch=source&distro=forky",
      "ecosystem": "Debian:14"
    },
    "versions": [
      "8.1.1+dfsg1-3",
      "8.1.4+dfsg1-1"
    ],
    "database_specific": {
      "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-21863.json"
    },
    "ecosystem_specific": {
      "urgency": "not yet assigned"
    }
  }
]

Publisher severity

No explicit severity was provided.

Event: #56628 · Revision 1
Added to Heist Feed: Sun, 25 Oct 2026 16:44:01 GMT
Publisher date: Mon, 23 Feb 2026 20:28:53 GMT

Read the original announcement