Debian dsa-6261 : corosync - security update

high Nessus Plugin ID 313710

Synopsis

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

Description

The remote Debian 12 / 13 host has packages installed that are affected by multiple vulnerabilities as referenced in the dsa-6261 advisory.

- ------------------------------------------------------------------------- Debian Security Advisory DSA-6261-1 [email protected] https://www.debian.org/security/ Moritz Muehlenhoff May 10, 2026 https://www.debian.org/security/faq
- -------------------------------------------------------------------------

Package : corosync CVE ID : CVE-2026-35091 CVE-2026-35092

Two security vulnerabilities were discovered in the Corosync cluster engine, which could result in denial of service or memory disclosure.

For the oldstable distribution (bookworm), these problems have been fixed in version 3.1.7-1+deb12u2.

For the stable distribution (trixie), these problems have been fixed in version 3.1.9-2+deb13u1.

We recommend that you upgrade your corosync packages.

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

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 corosync packages.

Plugin Details

Severity: High

ID: 313710

File Name: debian_DSA-6261.nasl

Version: 1.1

Type: Local

Agent: unix

Family: Debian Local Security Checks

Published: 5/10/2026

Updated: 5/10/2026

Supported Sensors: Nessus Agent, Continuous Assessment, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 5.0

CVSS v2

Risk Factor: High

Base Score: 8.5

Temporal Score: 6.7

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

CVSS Score Source: CVE-2026-35091

CVSS v3

Risk Factor: High

Base Score: 8.2

Temporal Score: 7.4

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

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

Vulnerability Information

CPE: p-cpe:/a:debian:debian_linux:libcorosync-common4, p-cpe:/a:debian:debian_linux:libsam4, p-cpe:/a:debian:debian_linux:libquorum5, p-cpe:/a:debian:debian_linux:libcfg7, p-cpe:/a:debian:debian_linux:libvotequorum8, p-cpe:/a:debian:debian_linux:corosync-doc, p-cpe:/a:debian:debian_linux:corosync-vqsim, p-cpe:/a:debian:debian_linux:libsam-dev, p-cpe:/a:debian:debian_linux:libvotequorum-dev, p-cpe:/a:debian:debian_linux:libcfg-dev, p-cpe:/a:debian:debian_linux:libcorosync-common-dev, cpe:/o:debian:debian_linux:13.0, p-cpe:/a:debian:debian_linux:libquorum-dev, p-cpe:/a:debian:debian_linux:libcpg-dev, p-cpe:/a:debian:debian_linux:corosync, p-cpe:/a:debian:debian_linux:libcmap4, p-cpe:/a:debian:debian_linux:libcpg4, p-cpe:/a:debian:debian_linux:libcmap-dev, p-cpe:/a:debian:debian_linux:corosync-notifyd, cpe:/o:debian:debian_linux:12.0

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: 5/10/2026

Vulnerability Publication Date: 1/8/2026

Reference Information

CVE: CVE-2026-35091, CVE-2026-35092

IAVA: 2026-A-0004

Detections

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