{"id":"AZL-40794","summary":"CVE-2019-6293 affecting package flex for versions less than 2.6.4-7","details":"An issue was discovered in the function mark_beginning_as_normal in nfa.c in flex 2.6.4. There is a stack exhaustion problem caused by the mark_beginning_as_normal function making recursive calls to itself in certain scenarios involving lots of '*' characters. Remote attackers could leverage this vulnerability to cause a denial-of-service.","modified":"2026-04-21T04:29:11.808018Z","published":"2019-01-15T00:29:00Z","upstream":["CVE-2019-6293"],"references":[{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2019-6293"}],"affected":[{"package":{"name":"flex","ecosystem":"Azure Linux:3","purl":"pkg:rpm/azure-linux/flex"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.6.4-7"}]}],"database_specific":{"source":"https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-40794.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H"}]}