{"id":"DEBIAN-CVE-2026-101276","details":"iperf3 3.21 (esnet/iperf) contains a remote, unauthenticated heap use-after-free: the server's per-test watchdog server_timer_proc() frees streams without cancelling/joining their worker threads, so a blocked worker dereferences a freed iperf_stream; fixed in 3.22.","modified":"2026-10-05T11:00:06.270008590Z","published":"2026-09-30T21:16:54.913Z","upstream":["CVE-2026-101276"],"references":[{"type":"ADVISORY","url":"https://security-tracker.debian.org/tracker/CVE-2026-101276"}],"affected":[{"package":{"name":"iperf3","ecosystem":"Debian:13","purl":"pkg:deb/debian/iperf3?arch=source&distro=trixie"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.18-2","3.18-2+deb13u1","3.18-2+deb13u2","3.19.1-1","3.19.1-2","3.20-1","3.20-2","3.20-2.1","3.22-0.1"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-101276.json"}},{"package":{"name":"iperf3","ecosystem":"Debian:14","purl":"pkg:deb/debian/iperf3?arch=source&distro=forky"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.22-0.1"}]}],"versions":["3.18-2","3.19.1-1","3.19.1-2","3.20-1","3.20-2","3.20-2.1"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-101276.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X"}]}