RHEL 9 : buildah (RHSA-2026:37410)

high Nessus Plugin ID 326070

Synopsis

The remote Red Hat host is missing one or more security updates for buildah.

Description

The remote Redhat Enterprise Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2026:37410 advisory.

The buildah package provides a tool for facilitating building OCI container images. Among other things, buildah enables you to: Create a working container, either from scratch or using an image as a starting point; Create an image, either from a working container or using the instructions in a Dockerfile; Build both Docker and OCI images.

Security Fix(es):

* golang.org/x/crypto/ssh: golang: golang.org/x/crypto/ssh: Denial of Service via crafted SSH certificate (CVE-2026-39835)

* golang.org/x/crypto/ssh/agent: golang.org/x/crypto/ssh/agent: Security bypass due to improper handling of key restrictions (CVE-2026-39832)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux 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 RHEL buildah package based on the guidance in RHSA-2026:37410.

Plugin Details

Severity: High

ID: 326070

File Name: redhat-RHSA-2026-37410.nasl

Version: 1.1

Type: Local

Agent: unix

Family: Red Hat Local Security Checks

Published: 7/10/2026

Updated: 7/10/2026

Supported Sensors: Agentless Assessment, 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: 57.75

Vendor

Vendor Severity: Important

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-2026-39832

CVSS v3

Risk Factor: High

Base Score: 8.7

Temporal Score: 7.6

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

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

Vulnerability Information

CPE: cpe:/o:redhat:rhel_eus:9.8, p-cpe:/a:redhat:enterprise_linux:buildah, p-cpe:/a:redhat:enterprise_linux:buildah-tests, cpe:/o:redhat:enterprise_linux:9

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

Exploit Ease: No known exploits are available

Patch Publication Date: 7/9/2026

Vulnerability Publication Date: 5/12/2026

Reference Information

CVE: CVE-2026-39832, CVE-2026-39835

CWE: 281, 476

RHSA: 2026:37410

Detections

Analytics