ubuntu-cve-2026-82677
Vulnerability from osv_ubuntu
Published
2026-08-31 00:00
Modified
2026-08-31 00:00
Summary
Details

A vulnerability was determined in valkey-io valkey 9.1.0. Impacted is the function moduleTimerHandler of the file src/module.c of the component Module Timer Subsystem. This manipulation causes double free. The attack can be initiated remotely. The exploit has been publicly disclosed and may be utilized. Patch name: b349fe2821e3998534b1454c1b64a478daf8c6b7. To fix this issue, it is recommended to deploy a patch.

Severity
2.4 (Low)
CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:N/I:N/A:L
1.9 (Low)
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P
N/A (UNKNOWN)
medium
References
To clipboard 

{
  "affected": [
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "valkey-redis-compat",
            "binary_version": "7.2.13+dfsg1-0ubuntu0.1"
          },
          {
            "binary_name": "valkey-sentinel",
            "binary_version": "7.2.13+dfsg1-0ubuntu0.1"
          },
          {
            "binary_name": "valkey-server",
            "binary_version": "7.2.13+dfsg1-0ubuntu0.1"
          },
          {
            "binary_name": "valkey-tools",
            "binary_version": "7.2.13+dfsg1-0ubuntu0.1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:24.04:LTS",
        "name": "valkey",
        "purl": "pkg:deb/ubuntu/valkey@7.2.13+dfsg1-0ubuntu0.1?arch=source\u0026distro=noble"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "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": {
        "binaries": [
          {
            "binary_name": "valkey-sentinel",
            "binary_version": "9.0.4-0ubuntu0.1"
          },
          {
            "binary_name": "valkey-server",
            "binary_version": "9.0.4-0ubuntu0.1"
          },
          {
            "binary_name": "valkey-tools",
            "binary_version": "9.0.4-0ubuntu0.1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:26.04:LTS",
        "name": "valkey",
        "purl": "pkg:deb/ubuntu/valkey@9.0.4-0ubuntu0.1?arch=source\u0026distro=resolute"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "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": "A vulnerability was determined in valkey-io valkey 9.1.0. Impacted is the function moduleTimerHandler of the file src/module.c of the component Module Timer Subsystem. This manipulation causes double free. The attack can be initiated remotely. The exploit has been publicly disclosed and may be utilized. Patch name: b349fe2821e3998534b1454c1b64a478daf8c6b7. To fix this issue, it is recommended to deploy a patch.",
  "id": "UBUNTU-CVE-2026-82677",
  "modified": "2026-08-31T00:00:00Z",
  "published": "2026-08-31T00:00:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-82677"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-82677"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/user-attachments/files/30118801/PoC.zip"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/valkey-io/valkey/"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/valkey-io/valkey/commit/b349fe2821e3998534b1454c1b64a478daf8c6b7"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/valkey-io/valkey/issues/4200"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/valkey-io/valkey/pull/4211"
    },
    {
      "type": "REPORT",
      "url": "https://vuldb.com/cve/CVE-2026-82677"
    },
    {
      "type": "REPORT",
      "url": "https://vuldb.com/submit/893959"
    },
    {
      "type": "REPORT",
      "url": "https://vuldb.com/vuln/397172"
    },
    {
      "type": "REPORT",
      "url": "https://vuldb.com/vuln/397172/cti"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:N/I:N/A:L",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P",
      "type": "CVSS_V4"
    },
    {
      "score": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2026-82677"
  ]
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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.