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openSUSE 16 Security Update : runc (openSUSE-SU-2026:21431-1)

high Nessus Plugin ID 329715

Synopsis

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

Description

The remote openSUSE 16 host has a package installed that is affected by multiple vulnerabilities as referenced in the openSUSE-SU-2026:21431-1 advisory.

 Update to 1.3.6.

 - CVE-2026-41579: malicious image with a `/dev` symlink can trigger limited host filesystem integrity violations (bsc#1268275).

 Other updates and bugfixes:

 - Version 1.3.6:
 * Various integration test improvements.
 * When masking directories with `maskPaths`, runc will now re- use a single `tmpfs` instance (which is not writeable) to reduce the number `tmpfs` superblocks that need to be reaped when containers die (in particular, Kubernetes applies masks to per-CPU sysfs directories which get expensive quickly).
 - Version 1.3.5:
 * Recursive atime-related mount flags (rrelatime et al.) are now applied properly.
 * PR #4757 caused a regression that resulted in spurious cannot start a container that has stopped errors when running runc create and has thus been reverted.
 * Updated builds to Go 1.25, libseccomp v2.6.0.
 * Minor signing keyring updates.

Tenable has extracted the preceding description block directly from the SUSE 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 runc package.

See Also

https://bugzilla.suse.com/1268275

https://www.suse.com/security/cve/CVE-2025-31133

https://www.suse.com/security/cve/CVE-2025-52565

https://www.suse.com/security/cve/CVE-2026-41579

Plugin Details

Severity: High

ID: 329715

File Name: openSUSE-2026-21431-1.nasl

Version: 1.1

Type: Local

Agent: unix

Published: 7/25/2026

Updated: 7/25/2026

Supported Sensors: Continuous Assessment, Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: High

Score: 7

Percentile: 98.33

CVSS v2

Risk Factor: Medium

Base Score: 6

Temporal Score: 4.7

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

CVSS Score Source: CVE-2025-52565

CVSS v3

Risk Factor: High

Base Score: 7.8

Temporal Score: 7

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

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

CVSS Score Source: CVE-2025-31133

CVSS v4

Risk Factor: High

Base Score: 8.4

Threat Score: 7.1

Threat Vector: CVSS:4.0/E:P

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

Vulnerability Information

CPE: cpe:/o:novell:opensuse:16.0, p-cpe:/a:novell:opensuse:runc

Required KB Items: Host/local_checks_enabled, Host/cpu, Host/SuSE/release, Host/SuSE/rpm-list

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 7/23/2026

Vulnerability Publication Date: 11/5/2025

Reference Information

CVE: CVE-2025-31133, CVE-2025-52565, CVE-2026-41579

IAVA: 2025-A-0876