This page tracks the Debian fix status. The vulnerability itself is described on the main CVE page. View CVE-2026-101276 →

DEBIAN-CVE-2026-101276

iperf3 3.21 (esnet/iperf) contains a remote, unauthenticated heap use-after-free: the server's per-test watchdog server_timer_proc() frees streams wit...

Original description

The description as published by the source.

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.

Source: OSV.dev (Open Source Vulnerabilities) OSV

Affected packages

Debian:13 iperf3

[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]

Debian:14 iperf3

[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.22-0.1"}]}]

References

advisory security-tracker.debian.org