Detections
Analytics

Ubuntu 16.04 LTS / 18.04 LTS / 20.04 LTS / 22.04 LTS / 24.04 LTS / 25.04 / 25.10 : libpng vulnerabilities (USN-7924-1)

high Nessus Plugin ID 278511

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Synopsis

The remote Ubuntu host is missing one or more security updates.

Description

The remote Ubuntu 16.04 LTS / 18.04 LTS / 20.04 LTS / 22.04 LTS / 24.04 LTS / 25.04 / 25.10 host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-7924-1 advisory.

 It was discovered that libpng incorrectly handled memory when processing certain PNG files, which could result in an out-of-bounds memory access. If a user or automated system were tricked into opening a specially crafted PNG file, an attacker could use this issue to cause libpng to crash, resulting in a denial of service. (CVE-2025-64505)

 It was discovered that libpng incorrectly handled memory when processing 8-bit images through the simplified write API with 'convert_to_8bit' enabled, which could result in an out-of-bounds memory access.
 If a user or automated system were tricked into opening a specially crafted 8-bit PNG file, an attacker could use this issue to cause libpng to crash, resulting in a denial of service. (CVE-2025-64506)

 It was discovered that libpng incorrectly handled memory when processing palette images with 'PNG_FLAG_OPTIMIZE_ALPHA' enabled, which could result in an out-of-bounds memory access. If a user or automated system were tricked into opening a specially crafted PNG file, an attacker could use this issue to cause libpng to crash, resulting in a denial of service. (CVE-2025-64720)

 It was discovered that libpng incorrectly handled memory when processing 6-bit interlaced PNGs with 8-bit output format, which could result in an out-of-bounds memory access. If a user or automated system were tricked into opening a specially crafted PNG file, an attacker could use this issue to cause libpng to crash, resulting in a denial of service. (CVE-2025-65018)

Tenable has extracted the preceding description block directly from the Ubuntu 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

https://ubuntu.com/security/notices/USN-7924-1

Plugin Details

Severity: High

ID: 278511

File Name: ubuntu_USN-7924-1.nasl

Version: 1.1

Type: local

Agent: unix

Published: 12/12/2025

Updated: 12/12/2025

Supported Sensors: Frictionless Assessment AWS, Frictionless Assessment Azure, Frictionless Assessment Agent, Nessus Agent, Agentless Assessment, Continuous Assessment, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 6.0

CVSS v2

Risk Factor: High

Base Score: 8.5

Temporal Score: 6.7

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

CVSS Score Source: CVE-2025-64720

CVSS v3

Risk Factor: High

Base Score: 7.1

Temporal Score: 6.4

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

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

CVSS Score Source: CVE-2025-65018

Vulnerability Information

CPE: cpe:/o:canonical:ubuntu_linux:18.04:-:lts, cpe:/o:canonical:ubuntu_linux:16.04:-:lts, cpe:/o:canonical:ubuntu_linux:20.04:-:lts, p-cpe:/a:canonical:ubuntu_linux:libpng16-16, p-cpe:/a:canonical:ubuntu_linux:libpng-dev, p-cpe:/a:canonical:ubuntu_linux:libpng-tools, cpe:/o:canonical:ubuntu_linux:22.04:-:lts, p-cpe:/a:canonical:ubuntu_linux:libpng16-dev, cpe:/o:canonical:ubuntu_linux:24.04:-:lts, cpe:/o:canonical:ubuntu_linux:25.04, cpe:/o:canonical:ubuntu_linux:25.10, p-cpe:/a:canonical:ubuntu_linux:libpng16-16t64, p-cpe:/a:canonical:ubuntu_linux:libpng16-devtools, p-cpe:/a:canonical:ubuntu_linux:libpng16-tools

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

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 12/11/2025

Vulnerability Publication Date: 11/24/2025

Reference Information

CVE: CVE-2025-64505, CVE-2025-64506, CVE-2025-64720, CVE-2025-65018

USN: 7924-1