Detections
Analytics

Ubuntu 24.04 LTS / 26.04 LTS : Valkey vulnerabilities (USN-8771-1)

medium Nessus Plugin ID 346984

Synopsis

The remote Ubuntu host is missing one or more security updates.

Description

The remote Ubuntu 24.04 LTS / 26.04 LTS host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-8771-1 advisory.

 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)

Tenable has extracted the preceding description block directly from the Ubuntu security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

Solution

Update the affected packages.

See Also

https://ubuntu.com/security/notices/USN-8771-1

Plugin Details

Severity: Medium

ID: 346984

File Name: ubuntu_USN-8771-1.nasl

Version: 1.1

Type: Local

Agent: unix

Published: 9/17/2026

Updated: 9/17/2026

Supported Sensors: Frictionless Assessment AWS, Frictionless Assessment Azure, Frictionless Assessment Agent, Nessus Agent, Agentless Assessment, Continuous Assessment, Tenable Cloud Security, Tenable Self-Hosted Container Security, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 4.9

Percentile: 58.2

CVSS v2

Risk Factor: Medium

Base Score: 5

Temporal Score: 3.7

Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:P

CVSS Score Source: CVE-2026-85522

CVSS v3

Risk Factor: High

Base Score: 8.8

Temporal Score: 7.7

Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

CVSS Score Source: CVE-2026-63639

CVSS v4

Risk Factor: Medium

Base Score: 6.9

Threat Score: 2.7

Threat Vector: CVSS:4.0/E:U

Vector: 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

Vulnerability Information

CPE: cpe:/o:canonical:ubuntu_linux:24.04:-:lts, cpe:/o:canonical:ubuntu_linux:26.04:-:lts, p-cpe:/a:canonical:ubuntu_linux:valkey-redis-compat, p-cpe:/a:canonical:ubuntu_linux:valkey-sentinel, p-cpe:/a:canonical:ubuntu_linux:valkey-server, p-cpe:/a:canonical:ubuntu_linux:valkey-tools

Required KB Items: Host/cpu, Host/Debian/dpkg-l, Host/Ubuntu, Host/Ubuntu/release

Exploit Ease: No known exploits are available

Patch Publication Date: 9/16/2026

Vulnerability Publication Date: 7/22/2026

Reference Information

CVE: CVE-2026-56684, CVE-2026-63639, CVE-2026-85522

USN: 8771-1