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Ubuntu 24.04 LTS / 25.10 : dpkg vulnerability (USN-8249-1)

high Nessus Plugin ID 314220

Synopsis

The remote Ubuntu host is missing a security update.

Description

The remote Ubuntu 24.04 LTS / 25.10 host has packages installed that are affected by a vulnerability as referenced in the USN-8249-1 advisory.

 Yashashree Gund discovered that the dpkg dpkg-deb tool incorrectly handled certain zstd-compressed .deb archives. If a user or automated system were tricked into manipulating a specially crafted .deb archive, a remote attacker could possibly use this issue to cause dpkg-deb to stop responding, resulting in a denial of service.

Tenable has extracted the preceding description block directly from the Ubuntu 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.

See Also

https://ubuntu.com/security/notices/USN-8249-1

Plugin Details

Severity: High

ID: 314220

File Name: ubuntu_USN-8249-1.nasl

Version: 1.1

Type: Local

Agent: unix

Published: 5/11/2026

Updated: 5/11/2026

Supported Sensors: Nessus Agent, Continuous Assessment, Nessus

Risk Information

VPR

Risk Factor: Low

Score: 3.6

CVSS v2

Risk Factor: High

Base Score: 7.8

Temporal Score: 5.8

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

CVSS Score Source: CVE-2026-2219

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: cpe:/o:canonical:ubuntu_linux:24.04:-:lts, p-cpe:/a:canonical:ubuntu_linux:libdpkg-perl, p-cpe:/a:canonical:ubuntu_linux:dselect, cpe:/o:canonical:ubuntu_linux:25.10, p-cpe:/a:canonical:ubuntu_linux:dpkg, p-cpe:/a:canonical:ubuntu_linux:dpkg-dev, p-cpe:/a:canonical:ubuntu_linux:libdpkg-dev

Required KB Items: Host/cpu, Host/Debian/dpkg-l, Host/Ubuntu, Host/Ubuntu/release

Exploit Ease: No known exploits are available

Patch Publication Date: 5/7/2026

Vulnerability Publication Date: 3/7/2026

Reference Information

CVE: CVE-2026-2219

USN: 8249-1