{"id":"DEBIAN-CVE-2025-64505","details":"LIBPNG is a reference library for use in applications that read, create, and manipulate PNG (Portable Network Graphics) raster image files. Prior to version 1.6.51, a heap buffer over-read vulnerability exists in libpng's png_do_quantize function when processing PNG files with malformed palette indices. The vulnerability occurs when palette_lookup array bounds are not validated against externally-supplied image data, allowing an attacker to craft a PNG file with out-of-range palette indices that trigger out-of-bounds memory access. This issue has been patched in version 1.6.51.","modified":"2026-09-01T16:06:20.562453447Z","published":"2025-11-25T00:15:47.133Z","upstream":["CVE-2025-64505"],"references":[{"type":"ADVISORY","url":"https://security-tracker.debian.org/tracker/CVE-2025-64505"}],"affected":[{"package":{"name":"libpng1.6","ecosystem":"Debian:12","purl":"pkg:deb/debian/libpng1.6?arch=source&distro=bookworm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.6.39-2+deb12u1"}]}],"versions":["1.6.39-2"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2025-64505.json"}},{"package":{"name":"libpng1.6","ecosystem":"Debian:13","purl":"pkg:deb/debian/libpng1.6?arch=source&distro=trixie"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.6.48-1+deb13u1"}]}],"versions":["1.6.48-1"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2025-64505.json"}},{"package":{"name":"libpng1.6","ecosystem":"Debian:14","purl":"pkg:deb/debian/libpng1.6?arch=source&distro=forky"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.6.51-1"}]}],"versions":["1.6.48-1","1.6.49-1~exp1","1.6.50-1","1.6.50-1~exp1"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2025-64505.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H"}]}