{"id":"AZL-35273","summary":"CVE-2023-40549 affecting package shim-unsigned-x64 for versions less than 15.8-3","details":"An out-of-bounds read flaw was found in Shim due to the lack of proper boundary verification during the load of a PE binary. This flaw allows an attacker to load a crafted PE binary, triggering the issue and crashing Shim, resulting in a denial of service.","modified":"2026-04-01T05:12:01.069411Z","published":"2024-01-29T17:15:08Z","upstream":["CVE-2023-40549"],"references":[{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2023-40549"}],"affected":[{"package":{"name":"shim-unsigned-x64","ecosystem":"Azure Linux:3","purl":"pkg:rpm/azure-linux/shim-unsigned-x64"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"15.8-3"}]}],"database_specific":{"source":"https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-35273.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"}]}