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LibTIFF Vulnerabilities Lead to Denial of Service Risks in Ubuntu 26.04

LibTIFF Vulnerabilities Lead to Denial of Service Risks in Ubuntu 26.04

First seen 19 Aug 2026, 16:25 UTC • •

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ThreatCluster AI
ThreatCluster •August 20, 2026 at 15:44 UTC
  • •Two critical vulnerabilities in LibTIFF could lead to denial of service.
  • •Affected systems include Ubuntu 26.04 LTS with specific package versions.
  • •Users should apply updates promptly to mitigate potential attacks.

On August 19, 2026, Ubuntu released USN-8113-2 to address vulnerabilities in LibTIFF affecting Ubuntu 26.04 LTS. Two critical issues were identified: CVE-2025-61143 and CVE-2025-61144, both published on February 23, 2026. These vulnerabilities allow attackers to exploit memory handling flaws in LibTIFF when processing certain images and malformed TIFF directories, potentially leading to crashes and denial of service. Users are advised to update their systems to mitigate these risks. The update includes fixes for several package versions, including libtiff-opengl and libtiff-tools. A standard system update is recommended to apply the necessary changes. Ubuntu Pro users benefit from extended security coverage for these packages.

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Timeline

2026-02-23
CVE-2025-61143 published
CVE-2025-61143 details a memory handling flaw in LibTIFF that can cause crashes.
Ubuntu
2026-02-23
CVE-2025-61144 published
CVE-2025-61144 describes another memory handling issue in LibTIFF affecting malformed TIFF directories.
Ubuntu
2026-08-19
USN-8113-2 released
Ubuntu released an update to fix vulnerabilities in LibTIFF for Ubuntu 26.04 LTS.
Ubuntu

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