UBUNTU-CVE-2026-82631

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Source
https://ubuntu.com/security/CVE-2026-82631
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-82631.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-82631
Upstream
Published
2026-08-31T00:00:00Z
Modified
2026-08-31T22:16:02.857881552Z
Severity
  • 2.2 (Low) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:L CVSS Calculator
  • 1.2 (Low) CVSS_V4 - CVSS:4.0/AV:N/AC:H/AT:N/PR:H/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

A security flaw has been discovered in valkey-io valkey 9.1.0. The affected element is the function handleClientsBlockedOnKey of the file src/blocked.c of the component Blocked-on-keys Subsystem. The manipulation results in use after free. The attack may be performed from remote. A high complexity level is associated with this attack. The exploitability is described as difficult. The exploit has been released to the public and may be used for attacks. The patch is identified as b2fb0e13f5b4c8c2fb63dcfc2c37a067a0d6d20b. Applying a patch is advised to resolve this issue.

References

Affected packages

Ubuntu:24.04:LTS / valkey

Package

Name
valkey
Purl
pkg:deb/ubuntu/valkey?arch=source&distro=noble

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

7.*
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_version": "7.2.13+dfsg1-0ubuntu0.1",
            "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"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-82631.json"

Ubuntu:26.04:LTS / valkey

Package

Name
valkey
Purl
pkg:deb/ubuntu/valkey?arch=source&distro=resolute

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

8.*
8.1.3+dfsg1-0ubuntu2
8.1.4+dfsg1-0ubuntu1
9.*
9.0.2-0ubuntu1
9.0.3-0ubuntu1
9.0.3-0ubuntu2
9.0.4-0ubuntu0.1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "9.0.4-0ubuntu0.1",
            "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"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-82631.json"