{"id":"USN-7963-1","summary":"libpng1.6 vulnerabilities","details":"It was discovered that the libpng simplified API incorrectly processed\npalette PNG images with partial transparency and gamma correction. If a\nuser or automated system were tricked into opening a specially crafted PNG\nfile, an attacker could use this issue to cause libpng to crash, resulting\nin a denial of service. (CVE-2025-66293)\n\nPetr Simecek, Stanislav Fort and Pavel Kohout discovered that the libpng\nsimplified API incorrectly processed interlaced 16-bit PNGs with 8-bit\noutput format and non-minimal row strides. If a user or automated system\nwere tricked into opening a specially crafted PNG file, an attacker could\nuse this issue to cause libpng to crash, resulting in a denial of service.\n(CVE-2026-22695)\n\nCosmin Truta discovered that the libpng simplified API incorrectly handled\ninvalid row strides. 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. (CVE-2026-22801)","modified":"2026-02-10T04:50:48Z","published":"2026-01-14T16:45:48Z","related":["UBUNTU-CVE-2025-66293","UBUNTU-CVE-2026-22695","UBUNTU-CVE-2026-22801"],"upstream":["CVE-2025-66293","CVE-2026-22695","CVE-2026-22801","UBUNTU-CVE-2025-66293","UBUNTU-CVE-2026-22695","UBUNTU-CVE-2026-22801"],"references":[{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-7963-1"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2025-66293"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-22695"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-22801"}],"affected":[{"package":{"name":"libpng1.6","ecosystem":"Ubuntu:22.04:LTS","purl":"pkg:deb/ubuntu/libpng1.6@1.6.37-3ubuntu0.3?arch=source&distro=jammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.6.37-3ubuntu0.3"}]}],"versions":["1.6.37-3build4","1.6.37-3build5","1.6.37-3ubuntu0.1"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_name":"libpng-dev","binary_version":"1.6.37-3ubuntu0.3"},{"binary_name":"libpng-tools","binary_version":"1.6.37-3ubuntu0.3"},{"binary_name":"libpng16-16","binary_version":"1.6.37-3ubuntu0.3"}]},"database_specific":{"cves_map":{"ecosystem":"Ubuntu:22.04:LTS","cves":[{"id":"CVE-2025-66293","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H"},{"type":"Ubuntu","score":"medium"}]},{"id":"CVE-2026-22695","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H"},{"type":"Ubuntu","score":"medium"}]},{"id":"CVE-2026-22801","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"},{"type":"Ubuntu","score":"medium"}]}]},"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-7963-1.json"}},{"package":{"name":"libpng1.6","ecosystem":"Ubuntu:24.04:LTS","purl":"pkg:deb/ubuntu/libpng1.6@1.6.43-5ubuntu0.3?arch=source&distro=noble"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.6.43-5ubuntu0.3"}]}],"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"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_name":"libpng-dev","binary_version":"1.6.43-5ubuntu0.3"},{"binary_name":"libpng-tools","binary_version":"1.6.43-5ubuntu0.3"},{"binary_name":"libpng16-16t64","binary_version":"1.6.43-5ubuntu0.3"}]},"database_specific":{"cves_map":{"ecosystem":"Ubuntu:24.04:LTS","cves":[{"id":"CVE-2025-66293","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H"},{"type":"Ubuntu","score":"medium"}]},{"id":"CVE-2026-22695","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H"},{"type":"Ubuntu","score":"medium"}]},{"id":"CVE-2026-22801","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"},{"type":"Ubuntu","score":"medium"}]}]},"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-7963-1.json"}},{"package":{"name":"libpng1.6","ecosystem":"Ubuntu:25.10","purl":"pkg:deb/ubuntu/libpng1.6@1.6.50-1ubuntu0.3?arch=source&distro=questing"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.6.50-1ubuntu0.3"}]}],"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"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_name":"libpng-dev","binary_version":"1.6.50-1ubuntu0.3"},{"binary_name":"libpng-tools","binary_version":"1.6.50-1ubuntu0.3"},{"binary_name":"libpng16-16t64","binary_version":"1.6.50-1ubuntu0.3"}]},"database_specific":{"cves_map":{"ecosystem":"Ubuntu:25.10","cves":[{"id":"CVE-2025-66293","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H"},{"type":"Ubuntu","score":"medium"}]},{"id":"CVE-2026-22695","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H"},{"type":"Ubuntu","score":"medium"}]},{"id":"CVE-2026-22801","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"},{"type":"Ubuntu","score":"medium"}]}]},"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-7963-1.json"}}],"schema_version":"1.7.3"}