Vulnerability-Lookup

ubuntu-cve-2026-56684

Vulnerability from osv_ubuntu

Published

2026-08-18 15:16

Modified

2026-09-17 11:04

Summary

Details

Valkey is a distributed key-value database. Prior to 7.2.14, 8.0.10, 8.1.9, 9.0.5, and 9.1.1, Valkey's tlsProcessPendingData function iterates pending_list while an authenticated client can trigger CLIENT KILL, causing connTLSClose to delete the iterator's cached next node and producing a use-after-free that can crash the server or potentially allow remote code execution when TLS is enabled. This issue is fixed in versions 7.2.14, 8.0.10, 8.1.9, 9.0.5, and 9.1.1.

Severity

7.5 (High)


                    
                      CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

N/A (UNKNOWN)


                    
                      medium

References

URL

Type

	https://ubuntu.com/security/CVE-2026-56684	REPORT
	https://www.cve.org/CVERecord?id=CVE-2026-56684	REPORT
	https://github.com/valkey-io/valkey/security/advi…	REPORT
	https://github.com/valkey-io/valkey/pull/4234	REPORT
	https://github.com/valkey-io/valkey/commit/33b14a…	REPORT
	https://ubuntu.com/security/notices/USN-8771-1	ADVISORY

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
        "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
        "binaries": [
          {
            "binary_name": "valkey-redis-compat",
            "binary_version": "7.2.13+dfsg1-0ubuntu0.1+esm1"
          },
          {
            "binary_name": "valkey-sentinel",
            "binary_version": "7.2.13+dfsg1-0ubuntu0.1+esm1"
          },
          {
            "binary_name": "valkey-server",
            "binary_version": "7.2.13+dfsg1-0ubuntu0.1+esm1"
          },
          {
            "binary_name": "valkey-tools",
            "binary_version": "7.2.13+dfsg1-0ubuntu0.1+esm1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:24.04:LTS",
        "name": "valkey",
        "purl": "pkg:deb/ubuntu/valkey@7.2.13+dfsg1-0ubuntu0.1+esm1?arch=source\u0026distro=esm-apps/noble"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "7.2.13+dfsg1-0ubuntu0.1+esm1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "7.2.5+dfsg1-2ubuntu4~24.04.1",
        "7.2.7+dfsg1-0ubuntu0.24.04.1",
        "7.2.8+dfsg1-0ubuntu0.24.04.1",
        "7.2.8+dfsg1-0ubuntu0.24.04.2",
        "7.2.8+dfsg1-0ubuntu0.24.04.3",
        "7.2.10+dfsg1-0ubuntu0.1",
        "7.2.11+dfsg1-0ubuntu0.1",
        "7.2.11+dfsg1-0ubuntu0.2",
        "7.2.12+dfsg1-0ubuntu0.1",
        "7.2.13+dfsg1-0ubuntu0.1"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "valkey-sentinel",
            "binary_version": "9.0.4-0ubuntu0.2"
          },
          {
            "binary_name": "valkey-server",
            "binary_version": "9.0.4-0ubuntu0.2"
          },
          {
            "binary_name": "valkey-tools",
            "binary_version": "9.0.4-0ubuntu0.2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:26.04:LTS",
        "name": "valkey",
        "purl": "pkg:deb/ubuntu/valkey@9.0.4-0ubuntu0.2?arch=source\u0026distro=resolute"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "9.0.4-0ubuntu0.2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "8.1.3+dfsg1-0ubuntu2",
        "8.1.4+dfsg1-0ubuntu1",
        "9.0.2-0ubuntu1",
        "9.0.3-0ubuntu1",
        "9.0.3-0ubuntu2",
        "9.0.4-0ubuntu0.1"
      ]
    }
  ],
  "aliases": [],
  "details": "Valkey is a distributed key-value database. Prior to 7.2.14, 8.0.10, 8.1.9, 9.0.5, and 9.1.1, Valkey\u0027s tlsProcessPendingData function iterates pending_list while an authenticated client can trigger CLIENT KILL, causing connTLSClose to delete the iterator\u0027s cached next node and producing a use-after-free that can crash the server or potentially allow remote code execution when TLS is enabled. This issue is fixed in versions 7.2.14, 8.0.10, 8.1.9, 9.0.5, and 9.1.1.",
  "id": "UBUNTU-CVE-2026-56684",
  "modified": "2026-09-17T11:04:34Z",
  "published": "2026-08-18T15:16:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-56684"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-56684"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/valkey-io/valkey/security/advisories/GHSA-53mc-f3m3-99vh"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/valkey-io/valkey/pull/4234"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/valkey-io/valkey/commit/33b14adf2026cfd8728607b026edb24843805844"
    },
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-8771-1"
    }
  ],
  "related": [
    "USN-8771-1"
  ],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2026-56684"
  ]
}

CVE-2026-56684 (GCVE-0-2026-56684)

Vulnerability from cvelistv5 – Published: 2026-08-18 14:19 – Updated: 2026-08-19 03:56

Title

Valkey: TLS pending-data processing use-after-free may allow remote code execution

Summary

Severity

7.5 (High)


                        
                          CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

SSVC

Exploitation: none Automatable: no Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-08-18 00:00 UTC

CWE

CWE-416 - Use After Free

Assigner

GitHub_M mitre root

References

8 references

URL	Tags
https://github.com/valkey-io/valkey/security/advi…	x_refsource_CONFIRM
https://github.com/valkey-io/valkey/pull/4234	x_refsource_MISC
https://github.com/valkey-io/valkey/commit/7cd5bc…	x_refsource_MISC
https://github.com/valkey-io/valkey/releases/tag/7.2.14	x_refsource_MISC
https://github.com/valkey-io/valkey/releases/tag/8.0.10	x_refsource_MISC
https://github.com/valkey-io/valkey/releases/tag/8.1.9	x_refsource_MISC
https://github.com/valkey-io/valkey/releases/tag/9.0.5	x_refsource_MISC
https://github.com/valkey-io/valkey/releases/tag/9.1.1	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
valkey-io	valkey	Affected: < 7.2.14 Affected: >= 8.0.0, < 8.0.10 Affected: >= 8.1.0, < 8.1.9 Affected: >= 9.0.0, < 9.0.5 Affected: >= 9.1.0, < 9.1.1

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-56684",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-08-18T00:00:00+00:00",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-08-19T03:56:13.565Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "valkey",
          "vendor": "valkey-io",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 7.2.14"
            },
            {
              "status": "affected",
              "version": "\u003e= 8.0.0, \u003c 8.0.10"
            },
            {
              "status": "affected",
              "version": "\u003e= 8.1.0, \u003c 8.1.9"
            },
            {
              "status": "affected",
              "version": "\u003e= 9.0.0, \u003c 9.0.5"
            },
            {
              "status": "affected",
              "version": "\u003e= 9.1.0, \u003c 9.1.1"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Valkey is a distributed key-value database. Prior to 7.2.14, 8.0.10, 8.1.9, 9.0.5, and 9.1.1, Valkey\u0027s tlsProcessPendingData function iterates pending_list while an authenticated client can trigger CLIENT KILL, causing connTLSClose to delete the iterator\u0027s cached next node and producing a use-after-free that can crash the server or potentially allow remote code execution when TLS is enabled. This issue is fixed in versions 7.2.14, 8.0.10, 8.1.9, 9.0.5, and 9.1.1."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "HIGH",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-416",
              "description": "CWE-416: Use After Free",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-18T14:19:51.047Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/valkey-io/valkey/security/advisories/GHSA-53mc-f3m3-99vh",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/valkey-io/valkey/security/advisories/GHSA-53mc-f3m3-99vh"
        },
        {
          "name": "https://github.com/valkey-io/valkey/pull/4234",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/valkey-io/valkey/pull/4234"
        },
        {
          "name": "https://github.com/valkey-io/valkey/commit/7cd5bcb7575d750ec2de618db80da58680a10fe3",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/valkey-io/valkey/commit/7cd5bcb7575d750ec2de618db80da58680a10fe3"
        },
        {
          "name": "https://github.com/valkey-io/valkey/releases/tag/7.2.14",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/valkey-io/valkey/releases/tag/7.2.14"
        },
        {
          "name": "https://github.com/valkey-io/valkey/releases/tag/8.0.10",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/valkey-io/valkey/releases/tag/8.0.10"
        },
        {
          "name": "https://github.com/valkey-io/valkey/releases/tag/8.1.9",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/valkey-io/valkey/releases/tag/8.1.9"
        },
        {
          "name": "https://github.com/valkey-io/valkey/releases/tag/9.0.5",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/valkey-io/valkey/releases/tag/9.0.5"
        },
        {
          "name": "https://github.com/valkey-io/valkey/releases/tag/9.1.1",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/valkey-io/valkey/releases/tag/9.1.1"
        }
      ],
      "source": {
        "advisory": "GHSA-53mc-f3m3-99vh",
        "discovery": "UNKNOWN"
      },
      "title": "Valkey: TLS pending-data processing use-after-free may allow remote code execution"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-56684",
    "datePublished": "2026-08-18T14:19:51.047Z",
    "dateReserved": "2026-06-22T16:39:01.044Z",
    "dateUpdated": "2026-08-19T03:56:13.565Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

usn-8771-1

Vulnerability from osv_ubuntu

Published

2026-09-16 04:27

Modified

2026-09-16 04:27

Summary

valkey vulnerabilities

Details

Madelyn Olson discovered that Valkey incorrectly handled TLS connections under certain conditions. A remote attacker could possibly use this issue to cause Valkey to crash, resulting in a denial of service, or execute arbitrary code. (CVE-2026-56684)

It was discovered that Valkey incorrectly handled certain stream RDB payloads when executing the RESTORE command. An authenticated remote attacker could possibly use this issue to cause Valkey to crash, resulting in a denial of service, or execute arbitrary code. (CVE-2026-63639)

It was discovered that Valkey incorrectly handled cluster slot migration operations. A remote attacker could possibly use this issue to cause Valkey to crash, resulting in a denial of service. This issue was only addressed in Ubuntu 26.04 LTS. (CVE-2026-85522)

References

URL

Type

	https://ubuntu.com/security/notices/USN-8771-1	ADVISORY
	https://ubuntu.com/security/CVE-2026-56684	REPORT
	https://ubuntu.com/security/CVE-2026-63639	REPORT
	https://ubuntu.com/security/CVE-2026-85522	REPORT

JSON

To clipboard

{
  "affected": [
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2026-56684",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2026-63639",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:Pro:24.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
        "binaries": [
          {
            "binary_name": "valkey-redis-compat",
            "binary_version": "7.2.13+dfsg1-0ubuntu0.1+esm1"
          },
          {
            "binary_name": "valkey-sentinel",
            "binary_version": "7.2.13+dfsg1-0ubuntu0.1+esm1"
          },
          {
            "binary_name": "valkey-server",
            "binary_version": "7.2.13+dfsg1-0ubuntu0.1+esm1"
          },
          {
            "binary_name": "valkey-tools",
            "binary_version": "7.2.13+dfsg1-0ubuntu0.1+esm1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:24.04:LTS",
        "name": "valkey",
        "purl": "pkg:deb/ubuntu/valkey@7.2.13+dfsg1-0ubuntu0.1+esm1?arch=source\u0026distro=esm-apps/noble"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "7.2.13+dfsg1-0ubuntu0.1+esm1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "7.2.5+dfsg1-2ubuntu4~24.04.1",
        "7.2.7+dfsg1-0ubuntu0.24.04.1",
        "7.2.8+dfsg1-0ubuntu0.24.04.1",
        "7.2.8+dfsg1-0ubuntu0.24.04.2",
        "7.2.8+dfsg1-0ubuntu0.24.04.3",
        "7.2.10+dfsg1-0ubuntu0.1",
        "7.2.11+dfsg1-0ubuntu0.1",
        "7.2.11+dfsg1-0ubuntu0.2",
        "7.2.12+dfsg1-0ubuntu0.1",
        "7.2.13+dfsg1-0ubuntu0.1"
      ]
    },
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2026-56684",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2026-63639",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2026-85522",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P",
                  "type": "CVSS_V4"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:26.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "valkey-sentinel",
            "binary_version": "9.0.4-0ubuntu0.2"
          },
          {
            "binary_name": "valkey-server",
            "binary_version": "9.0.4-0ubuntu0.2"
          },
          {
            "binary_name": "valkey-tools",
            "binary_version": "9.0.4-0ubuntu0.2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:26.04:LTS",
        "name": "valkey",
        "purl": "pkg:deb/ubuntu/valkey@9.0.4-0ubuntu0.2?arch=source\u0026distro=resolute"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "9.0.4-0ubuntu0.2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "8.1.3+dfsg1-0ubuntu2",
        "8.1.4+dfsg1-0ubuntu1",
        "9.0.2-0ubuntu1",
        "9.0.3-0ubuntu1",
        "9.0.3-0ubuntu2",
        "9.0.4-0ubuntu0.1"
      ]
    }
  ],
  "aliases": [],
  "details": "Madelyn Olson discovered that Valkey incorrectly handled TLS connections\nunder certain conditions. A remote attacker could possibly use this issue to\ncause Valkey to crash, resulting in a denial of service, or execute arbitrary\ncode. (CVE-2026-56684)\n\nIt was discovered that Valkey incorrectly handled certain stream RDB payloads\nwhen executing the RESTORE command. An authenticated remote attacker could\npossibly use this issue to cause Valkey to crash, resulting in a denial\nof service, or execute arbitrary code. (CVE-2026-63639)\n\nIt was discovered that Valkey incorrectly handled cluster slot migration\noperations. A remote attacker could possibly use this issue to cause Valkey\nto crash, resulting in a denial of service. This issue was only addressed in\nUbuntu 26.04 LTS. (CVE-2026-85522)",
  "id": "USN-8771-1",
  "modified": "2026-09-16T04:27:17Z",
  "published": "2026-09-16T04:27:17Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-8771-1"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-56684"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-63639"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-85522"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "summary": "valkey vulnerabilities",
  "upstream": [
    "UBUNTU-CVE-2026-56684",
    "UBUNTU-CVE-2026-63639",
    "UBUNTU-CVE-2026-85522"
  ]
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

Action not permitted

ubuntu-cve-2026-56684

Vulnerability from osv_ubuntu

CVE-2026-56684 (GCVE-0-2026-56684)

usn-8771-1

Vulnerability from osv_ubuntu

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Related by attack behaviour