Detections
Analytics
Unity Linux 20.1050a / 20.1060a / 20.1070a Security Update: emacs (UTSA-2026-142368)
medium Nessus Plugin ID 370116
Synopsis
The Unity Linux host is missing one or more security updates.Description
The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-142368 advisory.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.
Tenable has extracted the preceding description block directly from the Unity Linux security advisory.
Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.
Solution
Update the affected emacs package.See Also
https://access.redhat.com/security/cve/CVE-2026-77219
https://debbugs.gnu.org/cgi/bugreport.cgi?bug=81344
https://github.com/emacs-mirror/emacs/releases/tag/emacs-31.0.91
http://www.nessus.org/u?9d387662
Plugin Details
Severity: Medium
ID: 370116
File Name: unity_linux_UTSA-2026-142368.nasl
Version: 1.1
Type: Local
Published: 10/21/2026
Updated: 10/21/2026
Supported Sensors: Nessus
Risk Information
VPR
Risk Factor: Medium
Score: 4.3
Percentile: 53.41
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-2026-77219
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
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
Vulnerability Information
Required KB Items: Host/local_checks_enabled, Host/cpu, Host/UOS-Server/release, Host/UOS-Server/rpm-list
Exploit Ease: No known exploits are available
Patch Publication Date: 10/22/2026
Vulnerability Publication Date: 8/21/2026
Reference Information
CVE: CVE-2026-77219