openSUSE 16 Security Update : apptainer (openSUSE-SU-2026:21499-1)

high Nessus Plugin ID 331561

Synopsis

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

Description

The remote openSUSE 16 host has packages installed that are affected by multiple vulnerabilities as referenced in the openSUSE-SU-2026:21499-1 advisory.

Changes in apptainer:

- Update to version 1.5.3:
* If the ptrace() system call does not work while building an image as an unprivileged user, skip using PRoot to preserve file ownership and print an INFO message.
* Bind getopt from the host when using fakeroot command mode, to make the fakeroot command work with base containers which no longer contain getopt by default.
* Update fixes CVE-2026-56852 (GO-2026-5970) (bsc#1272115) golang.org/x/text/unicode/norm:
A norm.Iter can enter an infinite loop when handling input containing invalid UTF-8 bytes.

- Update to version 1.5.2:
* Extended the mksquashfs segmentation fault workaround for cases where mksquashfs uses many processor cores.

- Update the golang.org/x/net dependency to version v0.57.0 to fix CVE-2026-39821 for good (bsc#1266656).
The fix in v0.55.0 only applied to Unicode versions >=16.0.0 which aren't yet available on any Golang versions released.

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 apptainer and / or apptainer-leap packages.

Plugin Details

Severity: High

ID: 331561

File Name: openSUSE-2026-21499-1.nasl

Version: 1.1

Type: Local

Agent: unix

Family: SuSE Local Security Checks

Published: 8/1/2026

Updated: 8/1/2026

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

Risk Information

VPR

Risk Factor: Medium

Score: 4.8

Percentile: 57.7

CVSS v2

Risk Factor: High

Base Score: 9.4

Temporal Score: 7

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

CVSS Score Source: CVE-2026-39821

CVSS v3

Risk Factor: High

Base Score: 8.2

Temporal Score: 7.1

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

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

Vulnerability Information

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

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

Exploit Ease: No known exploits are available

Patch Publication Date: 7/29/2026

Vulnerability Publication Date: 5/12/2026

Reference Information

CVE: CVE-2026-39821, CVE-2026-56852

Detections

Analytics