{"id":"AZL-70868","summary":"CVE-2025-64720 affecting package openjpeg2 2.3.1-12","details":"LIBPNG is a reference library for use in applications that read, create, and manipulate PNG (Portable Network Graphics) raster image files. From version 1.6.0 to before 1.6.51, an out-of-bounds read vulnerability exists in png_image_read_composite when processing palette images with PNG_FLAG_OPTIMIZE_ALPHA enabled. The palette compositing code in png_init_read_transformations incorrectly applies background compositing during premultiplication, violating the invariant component ≤ alpha × 257 required by the simplified PNG API. This issue has been patched in version 1.6.51.","modified":"2026-04-01T05:21:59.923476Z","published":"2025-11-25T00:15:47Z","upstream":["CVE-2025-64720"],"references":[{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-64720"}],"affected":[{"package":{"name":"openjpeg2","ecosystem":"Azure Linux:3","purl":"pkg:rpm/azure-linux/openjpeg2"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"last_affected":"2.3.1-12"}]}],"database_specific":{"source":"https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-70868.json"}}],"schema_version":"1.7.5"}