Detections
Analytics
Alibaba Cloud Linux 3 : 0335: emacs (ALINUX3-SA-2026:0335)
medium Nessus Plugin ID 378767
Synopsis
The remote Alibaba Cloud Linux host is missing one or more security updates.Description
The remote Alibaba Cloud Linux 3 host has packages installed that are affected by multiple vulnerabilities as referenced in the ALINUX3-SA-2026:0335 advisory.Package updates are available for Alibaba Cloud Linux 3 that fix the following vulnerabilities:
CVE-2026-77219:
GNU Emacs before 31.0.91 contains an integer overflow in the PBM/PPM/PGM image loader that allows an attacker to leak heap memory contents by supplying a crafted image with large dimensions and an elevated max color index. The image loader multiplies image dimensions and channel count using signed integer arithmetic; for sufficiently large values, the result wraps to a negative number, bypassing the bounds check and causing the pixel reader to access heap memory past the end of the allocated buffer. The over- read contents are interpreted as pixel color values and rendered on screen.
CVE-2026-79992:
A flaw was found in Emacs TRAMP. A local attacker could exploit this vulnerability by processing maliciously crafted filenames. This occurs because TRAMP concatenates login arguments without proper sanitization, which are then passed to a local shell. Successful exploitation could lead to arbitrary code execution.
CVE-2026-96442:
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.
Tenable has extracted the preceding description block directly from the Alibaba Cloud 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 affected packages.See Also
http://mirrors.aliyun.com/alinux/3/cve/alinux3-sa-20260335.xml
Plugin Details
Severity: Medium
ID: 378767
File Name: alinux3_sa_2026-0335.nasl
Version: 1.1
Type: Local
Published: 11/11/2026
Updated: 11/11/2026
Supported Sensors: Nessus
Risk Information
VPR
Risk Factor: High
Score: 7.9
Percentile: 99.32
CVSS v2
Risk Factor: High
Base Score: 7.2
Temporal Score: 5.3
Vector: CVSS2#AV:L/AC:L/Au:N/C:C/I:C/A:C
CVSS Score Source: CVE-2026-96442
CVSS v3
Risk Factor: High
Base Score: 7.8
Temporal Score: 6.8
Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C
CVSS v4
Risk Factor: Medium
Base Score: 6.9
Threat Score: 4.5
Threat Vector: CVSS:4.0/E:U
Vector: CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:H/VI:N/VA:H/SC:N/SI:N/SA:N
CVSS Score Source: CVE-2026-77219
Vulnerability Information
CPE: cpe:/o:alibabacloud:alibaba_cloud_linux_3, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:emacs-common, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:emacs-devel, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:emacs-doc, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:emacs-filesystem, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:emacs-lucid, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:emacs-nox, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:emacs-terminal, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:emacs
Required KB Items: Host/local_checks_enabled, Host/cpu, Host/Alibaba/release, Host/Alibaba/rpm-list
Exploit Ease: No known exploits are available
Patch Publication Date: 11/10/2026
Vulnerability Publication Date: 8/21/2026