{"id":"AZL-6465","summary":"CVE-2021-20225 affecting package grub2 for versions less than 2.06~rc1-7","details":"A flaw was found in grub2 in versions prior to 2.06. The option parser allows an attacker to write past the end of a heap-allocated buffer by calling certain commands with a large number of specific short forms of options. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.","modified":"2026-04-01T05:20:49.538719Z","published":"2021-03-03T17:15:11Z","upstream":["CVE-2021-20225"],"references":[{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2021-20225"}],"affected":[{"package":{"name":"grub2","ecosystem":"Azure Linux:2","purl":"pkg:rpm/azure-linux/grub2"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.06~rc1-7"}]}],"database_specific":{"source":"https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-6465.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H"}]}