Ubuntu Security Update USN-8531-1: libexif vulnerabilities

[LinuxBot]

It was discovered that libexif had an integer overflow in its MakerNote decoder when called with a zero-length buffer. An attacker could possibly use this issue to cause a denial of service or obtain sensitive information. (CVE-2026-32775) It was discovered that libexif had an integer overflow in its Nikon MakerNote handler on 32-bit systems. A local attacker could possibly use this issue to cause a denial of service or obtain sensitive information. (CVE-2026-40385) It was discovered that libexif had an integer underflow in its size checking for Fuji and Olympus MakerNote decoding. An attacker could possibly use this issue to cause a denial of service or obtain sensitive information. (CVE-2026-40386)

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