# Security update for iperf

Announcement ID: SUSE-SU-2025:02749-1  
Release Date: 2025-08-11T07:06:51Z  
Rating: important  
References:

  * bsc#1247519
  * bsc#1247520
  * bsc#1247522

  
Cross-References:

  * CVE-2025-54349
  * CVE-2025-54350
  * CVE-2025-54351

  
CVSS scores:

  * CVE-2025-54349 ( SUSE ):  5.0 CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:L
  * CVE-2025-54349 ( NVD ):  6.5 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:L
  * CVE-2025-54349 ( NVD ):  10.0 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
  * CVE-2025-54350 ( SUSE ):  5.3 CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:H
  * CVE-2025-54350 ( NVD ):  3.7 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L
  * CVE-2025-54350 ( NVD ):  5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
  * CVE-2025-54351 ( SUSE ):  7.5 CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
  * CVE-2025-54351 ( NVD ):  8.9 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:L
  * CVE-2025-54351 ( NVD ):  10.0 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

  
Affected Products:

  * openSUSE Leap 15.6
  * SUSE Enterprise Storage 7.1
  * SUSE Linux Enterprise Desktop 15 SP6
  * SUSE Linux Enterprise Desktop 15 SP7
  * SUSE Linux Enterprise Real Time 15 SP6
  * SUSE Linux Enterprise Real Time 15 SP7
  * SUSE Linux Enterprise Server 15 SP3
  * SUSE Linux Enterprise Server 15 SP6
  * SUSE Linux Enterprise Server 15 SP7
  * SUSE Linux Enterprise Server for SAP Applications 15 SP6
  * SUSE Linux Enterprise Server for SAP Applications 15 SP7
  * SUSE Package Hub 15 15-SP6
  * SUSE Package Hub 15 15-SP7

  
  
An update that solves three vulnerabilities can now be installed.

## Description:

This update for iperf fixes the following issues:

  * update to 3.19.1:
  * CVE-2025-54351: Fixed buffer overflow in net.c (bsc#1247522)
  * CVE-2025-54350: Fixed Base64Decode assertion failure and application exit
    upon a malformed authentication attempt (bsc#1247520)
  * CVE-2025-54349: Fixed off-by-one error and resultant heap-based buffer
    overflow (bsc#1247519)

  * update to 3.19:

  * iperf3 now supports the use of Multi-Path TCP (MPTCPv1) on Linux with the
    use of the `-m` or `--mptcp` flag. (PR #1661)
  * iperf3 now supports a `--cntl-ka` option to enable TCP keepalives on the
    control connection. (#812, #835, PR #1423)
  * iperf3 now supports the `MSG_TRUNC` receive option, specified by the
    `--skip-rx-copy`. This theoretically improves the rated throughput of tests
    at high bitrates by not delivering network payload data to userspace.
    (#1678, PR #1717)
  * A bug that caused the bitrate setting to be ignored when bursts are set, has
    been fixed. (#1773, #1820, PR #1821, PR #1848)
  * The congestion control protocol setting, if used, is now properly reset
    between tests. (PR #1812)
  * iperf3 now exits with a non-error 0 exit code if exiting via a `SIGTERM`,
    `SIGHUP`, or `SIGINT`. (#1009, PR# 1829)
  * The current behavior of iperf3 with respect to the `-n` and `-k` options is
    now documented as correct. (#1768, #1775, #596, PR #1800)

## Patch Instructions:

To install this SUSE update use the SUSE recommended installation methods like
YaST online_update or "zypper patch".  
Alternatively you can run the command listed for your product:

  * SUSE Package Hub 15 15-SP7  
    zypper in -t patch SUSE-SLE-Module-Packagehub-Subpackages-15-SP7-2025-2749=1

  * SUSE Enterprise Storage 7.1  
    zypper in -t patch SUSE-Storage-7.1-2025-2749=1

  * openSUSE Leap 15.6  
    zypper in -t patch openSUSE-SLE-15.6-2025-2749=1

  * SUSE Package Hub 15 15-SP6  
    zypper in -t patch SUSE-SLE-Module-Packagehub-Subpackages-15-SP6-2025-2749=1

## Package List:

  * SUSE Package Hub 15 15-SP7 (aarch64 ppc64le s390x x86_64)
    * iperf-3.19.1-150000.3.15.1
    * libiperf0-debuginfo-3.19.1-150000.3.15.1
    * iperf-devel-3.19.1-150000.3.15.1
    * iperf-debuginfo-3.19.1-150000.3.15.1
    * libiperf0-3.19.1-150000.3.15.1
    * iperf-debugsource-3.19.1-150000.3.15.1
  * SUSE Enterprise Storage 7.1 (aarch64 x86_64)
    * iperf-3.19.1-150000.3.15.1
    * libiperf0-debuginfo-3.19.1-150000.3.15.1
    * iperf-debuginfo-3.19.1-150000.3.15.1
    * libiperf0-3.19.1-150000.3.15.1
    * iperf-debugsource-3.19.1-150000.3.15.1
  * openSUSE Leap 15.6 (aarch64 ppc64le s390x x86_64)
    * iperf-3.19.1-150000.3.15.1
    * libiperf0-debuginfo-3.19.1-150000.3.15.1
    * iperf-devel-3.19.1-150000.3.15.1
    * iperf-debuginfo-3.19.1-150000.3.15.1
    * libiperf0-3.19.1-150000.3.15.1
    * iperf-debugsource-3.19.1-150000.3.15.1
  * SUSE Package Hub 15 15-SP6 (aarch64 ppc64le s390x x86_64)
    * iperf-3.19.1-150000.3.15.1
    * libiperf0-debuginfo-3.19.1-150000.3.15.1
    * iperf-devel-3.19.1-150000.3.15.1
    * iperf-debuginfo-3.19.1-150000.3.15.1
    * libiperf0-3.19.1-150000.3.15.1
    * iperf-debugsource-3.19.1-150000.3.15.1

## References:

  * https://www.suse.com/security/cve/CVE-2025-54349.html
  * https://www.suse.com/security/cve/CVE-2025-54350.html
  * https://www.suse.com/security/cve/CVE-2025-54351.html
  * https://bugzilla.suse.com/show_bug.cgi?id=1247519
  * https://bugzilla.suse.com/show_bug.cgi?id=1247520
  * https://bugzilla.suse.com/show_bug.cgi?id=1247522