{"id":"JLSEC-2026-841","details":"In WriteOnePNGImage() of the PNG coder at `coders/png.c`, an improper call to AcquireVirtualMemory() and memset() allows for an out-of-bounds write later when PopShortPixel() from `MagickCore/quantum-private.h` is called. The patch fixes the calls by adding 256 to rowbytes. An attacker who is able to supply a specially crafted image could affect availability with a low impact to data integrity. This flaw affects ImageMagick versions prior to 6.9.10-68 and 7.0.8-68.","modified":"2026-07-30T18:23:53.731430790Z","published":"2026-07-30T16:02:27.435Z","upstream":["CVE-2020-25664"],"database_specific":{"sources":[{"published":"2020-12-08T21:15:12.497Z","url":"https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2020-25664","html_url":"https://nvd.nist.gov/vuln/detail/CVE-2020-25664","database_specific":{"status":"Modified"},"id":"CVE-2020-25664","imported":"2026-07-30T14:08:42.164Z","modified":"2026-06-17T03:07:05.160Z"}],"license":"CC-BY-4.0"},"references":[{"type":"WEB","url":"https://bugzilla.redhat.com/show_bug.cgi?id=1891605"},{"type":"WEB","url":"https://bugzilla.redhat.com/show_bug.cgi?id=1891605"},{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/Z3J6D7POCQYQKNVRDYLTTPM5SQC3WVTR/"},{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/Z3J6D7POCQYQKNVRDYLTTPM5SQC3WVTR/"}],"affected":[{"package":{"name":"ImageMagick_jll","ecosystem":"Julia","purl":"pkg:julia/ImageMagick_jll?uuid=c73af94c-d91f-53ed-93a7-00f77d67a9d7"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"6.9.12+0"}]}],"database_specific":{"source":"https://github.com/JuliaLang/SecurityAdvisories.jl/tree/generated/osv/2026/JLSEC-2026-841.json"}}],"schema_version":"1.8.0","severity":[{"type":"CVSS_V2","score":"AV:N/AC:M/Au:N/C:N/I:P/A:P"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:H"}]}