HighFix available

DEBIAN-CVE-2026-23479

Type: advisorySource: OSV1 source record

Redis is an in-memory data structure store. In redis-server from 7.2.0 until 8.6.3, the unblock client flow does not handle an error return from `processCommandAndResetClient` when re-executing a blocked command. If a blocked client is evicted during this flow, an authenticated attacker can trigger a use-after-free that may lead to remote code execution. This has been patched in version 8.6.3.

Announced 5 May 2026Group revision 1

Original source ↗

DEBIAN-CVE-2026-23479

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-2026-23479

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
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
7.3.6+ds-3
Source reference: /affected/0/versions
Fixed versions: Not stated in this record
Prerequisites: Not stated in this record

redis

Source reference: /affected/1/package/name

Affected versions: 5:8.0.2-3
Source reference: /affected/1/versions
5:8.0.2-3+deb13u1
Source reference: /affected/1/versions
5:8.0.2-3+deb13u2
Source reference: /affected/1/versions
Fixed versions: 5:8.0.2-3+deb13u3
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
5:8.0.4-1
Source reference: /affected/2/versions
5:8.0.5-1
Source reference: /affected/2/versions
5:8.0.6-1
Source reference: /affected/2/versions
5:8.0.6-2
Source reference: /affected/2/versions
Fixed versions: 5:8.0.6-3
Source reference: /affected/2/ranges
Prerequisites: Not stated in this record

valkey

Source reference: /affected/3/package/name

Affected versions: 8.1.1+dfsg1-3
Source reference: /affected/3/versions
8.1.1+dfsg1-3+deb13u1
Source reference: /affected/3/versions
8.1.1+dfsg1-3+deb13u2
Source reference: /affected/3/versions
8.1.4+dfsg1-1
Source reference: /affected/3/versions
8.1.4+dfsg1-2
Source reference: /affected/3/versions
9.1.1-1
Source reference: /affected/3/versions
9.1.2-1
Source reference: /affected/3/versions
Fixed versions: Not stated in this record
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
8.1.4+dfsg1-1
Source reference: /affected/4/versions
8.1.4+dfsg1-2
Source reference: /affected/4/versions
Fixed versions: 9.1.1-1
Source reference: /affected/4/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": "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",
      "7.3.6+ds-2~bpo12+1",
      "7.3.6+ds-2~bpo13+1",
      "7.3.6+ds-3"
    ],
    "database_specific": {
      "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-23479.json"
    },
    "ecosystem_specific": {
      "urgency": "not yet assigned"
    }
  },
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          },
          {
            "fixed": "5:8.0.2-3+deb13u3"
          }
        ]
      }
    ],
    "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",
      "5:8.0.2-3+deb13u2"
    ],
    "database_specific": {
      "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-23479.json"
    },
    "ecosystem_specific": {
      "urgency": "not yet assigned"
    }
  },
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          },
          {
            "fixed": "5:8.0.6-3"
          }
        ]
      }
    ],
    "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",
      "5:8.0.6-1",
      "5:8.0.6-2"
    ],
    "database_specific": {
      "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-23479.json"
    },
    "ecosystem_specific": {
      "urgency": "not yet assigned"
    }
  },
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          }
        ]
      }
    ],
    "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",
      "8.1.1+dfsg1-3+deb13u2",
      "8.1.4+dfsg1-1",
      "8.1.4+dfsg1-2",
      "9.1.1-1",
      "9.1.2-1"
    ],
    "database_specific": {
      "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-23479.json"
    },
    "ecosystem_specific": {
      "urgency": "not yet assigned"
    }
  },
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          },
          {
            "fixed": "9.1.1-1"
          }
        ]
      }
    ],
    "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",
      "8.1.4+dfsg1-2"
    ],
    "database_specific": {
      "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-23479.json"
    },
    "ecosystem_specific": {
      "urgency": "not yet assigned"
    }
  }
]

Related CVEs: CVE-2026-23479
Source reference: /upstream

Publisher severity

high

Source reference: /severity/0/score

Event: #67712 · Revision 1
Added to Heist Feed: Sun, 25 Oct 2026 21:14:33 GMT
Publisher date: Tue, 05 May 2026 17:17:02 GMT

Read the original announcement

Revision history

25 Oct 2026DEBIAN-CVE-2026-23479 · Revision 1Source updated