Multiple vulnerabilities discovered in libheif affecting Ubuntu 20.04 through 26.04. Issues include denial of service from malformed HEIF sequences, infinite loops, arbitrary code execution from crafted HEIF/AVIF files, mask image handling flaws, grid-based file information disclosure, overlay compositing issues, and sequence file parsing failures.
USN-8454-1: libheif vulnerabilities
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June 18, 2026
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ubuntu