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Debian dsa-6538 : redis - security update

high Nessus Plugin ID 362658

Synopsis

The remote Debian host is missing one or more security-related updates.

Description

The remote Debian 13 host has packages installed that are affected by multiple vulnerabilities as referenced in the dsa-6538 advisory.

 - ------------------------------------------------------------------------- Debian Security Advisory DSA-6538-1 [email protected] https://www.debian.org/security/ Aron Xu October 02, 2026 https://www.debian.org/security/faq
 - -------------------------------------------------------------------------

 Package : redis CVE ID : CVE-2026-23479 CVE-2026-23631 CVE-2026-25243 CVE-2026-81934 Debian Bug : 1147421 1147422 1147423

 Multiple vulnerabilities were discovered in Redis, a persistent key-value database, which could result in denial of service or the execution of arbitrary code.

 This update also includes fixes for several related issues that have not been assigned CVE identifiers: ACL key permission checks for SORT, GEORADIUS, GEORADIUSBYMEMBER, XREAD and XREADGROUP could be bypassed; an out-of-bounds read during ACL key extraction for KEYNUM commands invoked with the wrong arity; missing validation of slot information when loading RDB files; a use-after-free in the blocked client list; an out-of-bounds read in HGETEX; and an integer overflow in the HyperLogLog hash function.

 Additionally, CVE-2026-66373 addresses an incomplete fix for CVE-2026-25243.
 Because that interim fix was never released on its own in Debian stable, it is therefore not referenced in the CVE ID list above. This update incorporates the comprehensive fix covering both issues.

 For the stable distribution (trixie), these problems have been fixed in version 5:8.0.2-3+deb13u3.

 We recommend that you upgrade your redis packages.

 For the detailed security status of redis please refer to its security tracker page at:
 https://security-tracker.debian.org/tracker/redis

 Further information about Debian Security Advisories, how to apply these updates to your system and frequently asked questions can be found at: https://www.debian.org/security/

 Mailing list: [email protected]

Tenable has extracted the preceding description block directly from the Debian 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

Upgrade the redis packages.

See Also

https://packages.debian.org/source/trixie/redis

https://security-tracker.debian.org/tracker/CVE-2026-23479

https://security-tracker.debian.org/tracker/CVE-2026-23631

https://security-tracker.debian.org/tracker/CVE-2026-25243

https://security-tracker.debian.org/tracker/CVE-2026-66373

https://security-tracker.debian.org/tracker/CVE-2026-81934

https://security-tracker.debian.org/tracker/source-package/redis

Plugin Details

Severity: High

ID: 362658

File Name: debian_DSA-6538.nasl

Version: 1.1

Type: Local

Agent: unix

Published: 10/2/2026

Updated: 10/2/2026

Supported Sensors: Continuous Assessment, Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: High

Score: 7.7

Percentile: 98.94

CVSS v2

Risk Factor: High

Base Score: 9

Temporal Score: 7

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

CVSS Score Source: CVE-2026-25243

CVSS v3

Risk Factor: High

Base Score: 8.8

Temporal Score: 7.9

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:P/RL:O/RC:C

CVSS v4

Risk Factor: High

Base Score: 7.7

Threat Score: 6.8

Threat Vector: CVSS:4.0/E:P

Vector: CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

Vulnerability Information

CPE: cpe:/o:debian:debian_linux:13.0, p-cpe:/a:debian:debian_linux:redis-sentinel, p-cpe:/a:debian:debian_linux:redis-server, p-cpe:/a:debian:debian_linux:redis-tools, p-cpe:/a:debian:debian_linux:redis

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

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 10/2/2026

Vulnerability Publication Date: 5/5/2026

Reference Information

CVE: CVE-2026-23479, CVE-2026-23631, CVE-2026-25243, CVE-2026-66373, CVE-2026-81934

IAVA: 2026-A-0426-S, 2026-A-0784-S, 2026-A-1052