Ubuntu Security NoticesUSN-8846-1

USN-8846-1: libheif vulnerabilities

Yuqi Qiu and Xiang Li discovered that libheif incorrectly handled certain compressed metadata. A remote attacker could possibly use this issue to cause a denial of service. This issue only affected Ubuntu 24.04 LTS and Ubuntu 26.04 LTS. (CVE-2026-84384) Yuqi Qiu and Xiang Li discovered that libheif incorrectly handled certain HEIF sequence data. A remote attacker could possibly use this issue to cause a denial of service. This issue only affected Ubuntu 26.04 LTS. (CVE-2026-84446) Yuqi Qiu and Xiang Li discovered that libheif incorrectly handled certain image references. A remote attacker could possibly use this issue to cause a denial of service. This issue only affected Ubuntu 26.04 LTS. (CVE-2026-84447) It was discovered that libheif incorrectly handled certain region masks. A local attacker could possibly use this issue to obtain sensitive information or cause a denial of service. This issue only affected Ubuntu 24.04 LTS and Ubuntu 26.04 LTS. (CVE-2026-84448) It was discovered that libheif incorrectly handled certain images. A remote attacker could possibly use this issue to cause a denial of service. This issue only affected Ubuntu 18.04 LTS, Ubuntu 20.04 LTS, Ubuntu 22.04 LTS, and Ubuntu 24.04 LTS. (CVE-2026-84449)

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Scope

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Timeline

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Sep 29, 2026 at 4:18 PM UTC
Published by Ubuntu
The publication date reported by the vendor.
Sep 29, 2026 at 8:10 PM UTC
Added to SecurityAlert
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Sep 29, 2026 at 9:30 PM UTC
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Vulnerabilities

CVEs named in this advisory

CVE-2026-84384View CVSS, KEV, EPSS, and threat context CVE-2026-84446View CVSS, KEV, EPSS, and threat context CVE-2026-84447View CVSS, KEV, EPSS, and threat context CVE-2026-84448View CVSS, KEV, EPSS, and threat context CVE-2026-84449View CVSS, KEV, EPSS, and threat context

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Vendor: Ubuntu
Advisory ID: USN-8846-1
Last source check: Sep 29, 2026 at 9:30 PM UTC

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Related advisories from Ubuntu

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