Detections
Analytics

Amazon Linux 2023 : emacs, emacs-common, emacs-devel (ALAS2023-2026-3195)

high Nessus Plugin ID 365235

Synopsis

The remote Amazon Linux 2023 host is missing a security update.

Description

It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2023-2026-3195 advisory.

 A flaw was found in GNU Emacs. This vulnerability, a memory corruption issue, occurs when Emacs processes specially crafted SVG (Scalable Vector Graphics) CSS (Cascading Style Sheets) data. A local user could exploit this by convincing a victim to open a malicious SVG file, which may lead to a denial of service (DoS) or potentially information disclosure. (CVE-2026-6861)

 A code execution flaw was found in Emacs, affecting versions prior to 31.2. The Flymake mode using language backends other than Lisp would execute arbitrary code from the edited file while performing syntax checking. Viewing or editing untrusted files using Emacs could lead to arbitrary code execution with the privileges of the user running Emacs. (CVE-2026-96442)

Tenable has extracted the preceding description block directly from the tested product 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

Run 'dnf update emacs --releasever 2023.12.20261012' or or 'dnf update --advisory ALAS2023-2026-3195 --releasever 2023.12.20261012' to update your system.

See Also

https://alas.aws.amazon.com//AL2023/ALAS2023-2026-3195.html

https://alas.aws.amazon.com/faqs.html

https://explore.alas.aws.amazon.com/CVE-2026-6861.html

https://explore.alas.aws.amazon.com/CVE-2026-96442.html

Plugin Details

Severity: High

ID: 365235

File Name: al2023_ALAS2023-2026-3195.nasl

Version: 1.1

Type: Local

Agent: unix

Published: 10/12/2026

Updated: 10/12/2026

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

Risk Information

VPR

Risk Factor: Medium

Score: 4.9

Percentile: 58.4

CVSS v2

Risk Factor: Medium

Base Score: 6.6

Temporal Score: 4.9

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

CVSS Score Source: CVE-2026-6861

CVSS v3

Risk Factor: High

Base Score: 7.1

Temporal Score: 6.2

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

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

Vulnerability Information

CPE: cpe:/o:amazon:linux:2023, p-cpe:/a:amazon:linux:emacs-common-debuginfo, p-cpe:/a:amazon:linux:emacs-common, p-cpe:/a:amazon:linux:emacs-debuginfo, p-cpe:/a:amazon:linux:emacs-debugsource, p-cpe:/a:amazon:linux:emacs-devel, p-cpe:/a:amazon:linux:emacs-filesystem, p-cpe:/a:amazon:linux:emacs-lucid-debuginfo, p-cpe:/a:amazon:linux:emacs-lucid, p-cpe:/a:amazon:linux:emacs-nox-debuginfo, p-cpe:/a:amazon:linux:emacs-nox, p-cpe:/a:amazon:linux:emacs-terminal, p-cpe:/a:amazon:linux:emacs

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

Exploit Ease: No known exploits are available

Patch Publication Date: 10/12/2026

Vulnerability Publication Date: 4/14/2026

Reference Information

CVE: CVE-2026-6861, CVE-2026-96442