{"id":"USN-8039-1","summary":"libpng1.6 vulnerability","details":"It was discovered that the libpng simplified API incorrectly handled\nquantizing RGB images. If a user or automated system were tricked into\nopening a specially crafted PNG file, an attacker could use this issue to\ncause libpng to crash, resulting in a denial of service.","modified":"2026-04-27T18:02:45.147965Z","published":"2026-02-12T18:00:35Z","related":["UBUNTU-CVE-2026-25646"],"upstream":["CVE-2026-25646","UBUNTU-CVE-2026-25646"],"references":[{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-8039-1"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-25646"}],"affected":[{"package":{"name":"libpng1.6","ecosystem":"Ubuntu:22.04:LTS","purl":"pkg:deb/ubuntu/libpng1.6@1.6.37-3ubuntu0.4?arch=source&distro=jammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.6.37-3ubuntu0.4"}]}],"versions":["1.6.37-3build4","1.6.37-3build5","1.6.37-3ubuntu0.1","1.6.37-3ubuntu0.3"],"ecosystem_specific":{"binaries":[{"binary_name":"libpng-tools","binary_version":"1.6.37-3ubuntu0.4"},{"binary_name":"libpng16-16","binary_version":"1.6.37-3ubuntu0.4"}],"availability":"No subscription required"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8039-1.json","cves_map":{"cves":[{"id":"CVE-2026-25646","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:L/VI:L/VA:H/SC:N/SI:N/SA:N"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H"},{"type":"Ubuntu","score":"medium"}]}],"ecosystem":"Ubuntu:22.04:LTS"}}},{"package":{"name":"libpng1.6","ecosystem":"Ubuntu:24.04:LTS","purl":"pkg:deb/ubuntu/libpng1.6@1.6.43-5ubuntu0.5?arch=source&distro=noble"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.6.43-5ubuntu0.5"}]}],"versions":["1.6.40-1","1.6.40-2","1.6.40-3","1.6.42-1","1.6.43-1","1.6.43-3","1.6.43-5build1","1.6.43-5ubuntu0.1","1.6.43-5ubuntu0.3","1.6.43-5ubuntu0.4"],"ecosystem_specific":{"binaries":[{"binary_name":"libpng-tools","binary_version":"1.6.43-5ubuntu0.5"},{"binary_name":"libpng16-16t64","binary_version":"1.6.43-5ubuntu0.5"}],"availability":"No subscription required"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8039-1.json","cves_map":{"cves":[{"id":"CVE-2026-25646","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:L/VI:L/VA:H/SC:N/SI:N/SA:N"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H"},{"type":"Ubuntu","score":"medium"}]}],"ecosystem":"Ubuntu:24.04:LTS"}}},{"package":{"name":"libpng1.6","ecosystem":"Ubuntu:25.10","purl":"pkg:deb/ubuntu/libpng1.6@1.6.50-1ubuntu0.4?arch=source&distro=questing"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.6.50-1ubuntu0.4"}]}],"versions":["1.6.47-1.1","1.6.48-1","1.6.49-1~exp1","1.6.50-1~exp1","1.6.50-1","1.6.50-1ubuntu0.1","1.6.50-1ubuntu0.3"],"ecosystem_specific":{"binaries":[{"binary_name":"libpng-tools","binary_version":"1.6.50-1ubuntu0.4"},{"binary_name":"libpng16-16t64","binary_version":"1.6.50-1ubuntu0.4"}],"availability":"No subscription required"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8039-1.json","cves_map":{"cves":[{"id":"CVE-2026-25646","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:L/VI:L/VA:H/SC:N/SI:N/SA:N"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H"},{"type":"Ubuntu","score":"medium"}]}],"ecosystem":"Ubuntu:25.10"}}}],"schema_version":"1.7.5"}