FreeBSD : dash -- arith: INTMAX_MIN / -1 overflow (ab2258a2-4cea-11f1-aec8-bc241107513d)

high Nessus Plugin ID 314285

Synopsis

The remote FreeBSD host is missing one or more security-related updates.

Description

The version of FreeBSD installed on the remote host is prior to tested version. It is, therefore, affected by a vulnerability as referenced in the ab2258a2-4cea-11f1-aec8-bc241107513d advisory.

https://git.kernel.org/pub/scm/utils/dash/dash.git/commit/?id=0034bfe185d3d875cebace8cb3ca5c9dabf9e0f3 reports:

Division and remainder currently guard against division by zero, but not against the signed overflow case INTMAX_MIN / -1. On affected systems this can trigger SIGFPE during arithmetic expansion.

Tenable has extracted the preceding description block directly from the FreeBSD 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 packages.

Plugin Details

Severity: High

ID: 314285

File Name: freebsd_pkg_ab2258a24cea11f1aec8bc241107513d.nasl

Version: 1.1

Type: Local

Family: FreeBSD Local Security Checks

Published: 5/11/2026

Updated: 5/11/2026

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Low

Score: 3.6

CVSS v2

Risk Factor: Medium

Base Score: 5

Temporal Score: 3.7

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

CVSS Score Source: CVE-2026-31323

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.5

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

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

Vulnerability Information

CPE: p-cpe:/a:freebsd:freebsd:dash, cpe:/o:freebsd:freebsd

Required KB Items: Host/local_checks_enabled, Host/FreeBSD/release, Host/FreeBSD/pkg_info

Exploit Ease: No known exploits are available

Patch Publication Date: 5/11/2026

Vulnerability Publication Date: 5/11/2026

Reference Information

CVE: CVE-2026-31323

Detections

Analytics