{"id":"DEBIAN-CVE-2011-4838","details":"JRuby before 1.6.5.1 computes hash values without restricting the ability to trigger hash collisions predictably, which allows context-dependent attackers to cause a denial of service (CPU consumption) via crafted input to an application that maintains a hash table.","modified":"2026-09-19T06:47:38.147457185Z","published":"2011-12-30T01:55:01.500Z","upstream":["CVE-2011-4838"],"references":[{"type":"ADVISORY","url":"https://security-tracker.debian.org/tracker/CVE-2011-4838"}],"affected":[{"package":{"name":"jruby","ecosystem":"Debian:12","purl":"pkg:deb/debian/jruby?arch=source&distro=bookworm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.5.6-4"}]}],"ecosystem_specific":{"urgency":"low"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2011-4838.json"}},{"package":{"name":"jruby","ecosystem":"Debian:13","purl":"pkg:deb/debian/jruby?arch=source&distro=trixie"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.5.6-4"}]}],"ecosystem_specific":{"urgency":"low"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2011-4838.json"}},{"package":{"name":"jruby","ecosystem":"Debian:14","purl":"pkg:deb/debian/jruby?arch=source&distro=forky"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.5.6-4"}]}],"ecosystem_specific":{"urgency":"low"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2011-4838.json"}}],"schema_version":"1.9.0"}