{"id":"AZL-109788","summary":"CVE-2026-17591 affecting package libarchive 3.7.7-7","details":"A flaw was found in libarchive. An attacker can cause a Denial of Service (DoS) or potential information disclosure due to a use-after-free vulnerability, which occurs when a program reads memory that has already been released. This issue arises when the archive_entry_copy_mac_metadata() function deallocates an internal buffer before completing a data copy. An attacker who can supply input to an application utilizing this function can trigger the flaw to crash the application or read uninitialized memory data.","modified":"2026-10-21T14:17:40.909299885Z","published":"2026-10-16T23:17:01Z","upstream":["CVE-2026-17591"],"references":[{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-17591"}],"affected":[{"package":{"name":"libarchive","ecosystem":"Azure Linux:3","purl":"pkg:rpm/azure-linux/libarchive"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"last_affected":"3.7.7-7"}]}],"database_specific":{"source":"https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-109788.json"}}],"schema_version":"1.9.0"}