Detections
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Ubuntu 26.04 LTS : libheif vulnerabilities (USN-8526-1)

medium Nessus Plugin ID 326250

Synopsis

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

Description

The remote Ubuntu 26.04 LTS host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-8526-1 advisory.

 Xianrui Dong discovered that libheif had an out-of-bounds read in its HEIF sequence track parser. An attacker could possibly use this issue to cause a denial of service or obtain sensitive information. This issue only affected Ubuntu 26.04 LTS. (CVE-2026-47254)

 Junyi Liu discovered that libheif had a null pointer dereference in its image tiling interface. An attacker could possibly use this issue to cause a denial of service. (CVE-2026-47709)

 Calvin Young and Enoch Chow discovered that libheif had an integer overflow in its inline mask size calculation. An attacker could possibly use this issue to cause a denial of service or obtain sensitive information. (CVE-2026-47714)

 Ariel Koren discovered that libheif had an integer underflow in its grid image tile coordinate transform.
 An attacker could possibly use this issue to cause a denial of service or obtain sensitive information.
 (CVE-2026-48029)

 It was discovered that libheif had a missing bound check in its HEIF sequence parser, allowing unbounded heap allocation. An attacker could possibly use this issue to cause a denial of service. (CVE-2026-50142)

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-8526-1

Plugin Details

Severity: Medium

ID: 326250

File Name: ubuntu_USN-8526-1.nasl

Version: 1.1

Type: Local

Agent: unix

Published: 7/10/2026

Updated: 7/10/2026

Supported Sensors: Tenable Cloud Security, Tenable Self-Hosted Container Security, Agentless Assessment, Continuous Assessment, Frictionless Assessment Agent, Frictionless Assessment AWS, Frictionless Assessment Azure, Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Low

Score: 3.5

Percentile: 51.96

CVSS v2

Risk Factor: Medium

Base Score: 5.6

Temporal Score: 4.1

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

CVSS Score Source: CVE-2026-48029

CVSS v3

Risk Factor: Medium

Base Score: 6.8

Temporal Score: 5.9

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

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

CVSS Score Source: CVE-2026-47254

Vulnerability Information

CPE: p-cpe:/a:canonical:ubuntu_linux:heif-view, p-cpe:/a:canonical:ubuntu_linux:heif-thumbnailer, p-cpe:/a:canonical:ubuntu_linux:libheif-plugin-ffmpegdec, p-cpe:/a:canonical:ubuntu_linux:libheif-plugins-all, p-cpe:/a:canonical:ubuntu_linux:libheif-plugin-jpegenc, p-cpe:/a:canonical:ubuntu_linux:heif-gdk-pixbuf, p-cpe:/a:canonical:ubuntu_linux:libheif-dev, p-cpe:/a:canonical:ubuntu_linux:libheif-plugin-j2kenc, p-cpe:/a:canonical:ubuntu_linux:libheif-plugin-x265, p-cpe:/a:canonical:ubuntu_linux:libheif-plugin-aomdec, p-cpe:/a:canonical:ubuntu_linux:libheif-plugin-j2kdec, p-cpe:/a:canonical:ubuntu_linux:libheif-plugin-libde265, p-cpe:/a:canonical:ubuntu_linux:libheif-plugin-svtenc, p-cpe:/a:canonical:ubuntu_linux:libheif1, p-cpe:/a:canonical:ubuntu_linux:libheif-examples, p-cpe:/a:canonical:ubuntu_linux:libheif-plugin-dav1d, p-cpe:/a:canonical:ubuntu_linux:libheif-plugin-rav1e, cpe:/o:canonical:ubuntu_linux:26.04:-:lts, p-cpe:/a:canonical:ubuntu_linux:libheif-plugin-jpegdec, p-cpe:/a:canonical:ubuntu_linux:libheif-plugin-kvazaar, p-cpe:/a:canonical:ubuntu_linux:libheif-plugin-aomenc

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

Exploit Ease: No known exploits are available

Patch Publication Date: 7/9/2026

Vulnerability Publication Date: 6/18/2026

Reference Information

CVE: CVE-2026-47254, CVE-2026-47709, CVE-2026-47714, CVE-2026-48029, CVE-2026-50142

IAVB: 2026-B-0158

USN: 8526-1