{"id":"DEBIAN-CVE-2026-56684","details":"Valkey is a distributed key-value database. Prior to 7.2.14, 8.0.10, 8.1.9, 9.0.5, and 9.1.1, Valkey's tlsProcessPendingData function iterates pending_list while an authenticated client can trigger CLIENT KILL, causing connTLSClose to delete the iterator's cached next node and producing a use-after-free that can crash the server or potentially allow remote code execution when TLS is enabled. This issue is fixed in versions 7.2.14, 8.0.10, 8.1.9, 9.0.5, and 9.1.1.","modified":"2026-09-19T23:00:31.608717348Z","published":"2026-08-18T15:16:55.463Z","upstream":["CVE-2026-56684"],"references":[{"type":"ADVISORY","url":"https://security-tracker.debian.org/tracker/CVE-2026-56684"}],"affected":[{"package":{"name":"valkey","ecosystem":"Debian:13","purl":"pkg:deb/debian/valkey?arch=source&distro=trixie"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["8.1.1+dfsg1-3","8.1.1+dfsg1-3+deb13u1","8.1.1+dfsg1-3+deb13u2","8.1.4+dfsg1-1","8.1.4+dfsg1-2","9.1.1-1","9.1.2-1"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2026-56684.json"}},{"package":{"name":"valkey","ecosystem":"Debian:14","purl":"pkg:deb/debian/valkey?arch=source&distro=forky"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"9.1.1-1"}]}],"versions":["8.1.1+dfsg1-3","8.1.4+dfsg1-1","8.1.4+dfsg1-2"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2026-56684.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H"}]}