CVE-2026-101276 Affecting iperf package, versions <3.22-150000.3.18.1


Severity

Recommended
0.0
high
0
10

Based on SUSE Linux Enterprise Server security rating.

Threat Intelligence

EPSS
0.4% (32nd percentile)

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  • Snyk IDSNYK-SLES157-IPERF-21000677
  • published16 Oct 2026
  • disclosed15 Oct 2026

Introduced: 15 Oct 2026

NewCVE-2026-101276  (opens in a new tab)

How to fix?

Upgrade SLES:15.7 iperf to version 3.22-150000.3.18.1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream iperf package and not the iperf package as distributed by SLES. See How to fix? for SLES:15.7 relevant fixed versions and status.

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.

CVSS Base Scores

version 3.1