Description
In iperf before 3.19.1, net.c has a buffer overflow when --skip-rx-copy is used (for MSG_TRUNC in recv).
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| ES | iperf3 | < 3.19.1 | 3.19.1 |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.10 | iperf3 | No fix yet | — |
| Ubuntu 25.10 | iperf3 | No fix yet | — |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP7 | iperf | 3.19.1-150000.3.15.1 | SUSE-SU-2025:02749-1 |
| SLES 15 SP6 | iperf | 3.19.1-150000.3.15.1 | SUSE-SU-2025:02749-1 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SUSE Enterprise Storage 7.1 | iperf | 3.19.1-150000.3.15.1 | SUSE-SU-2025:02749-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | iperf | 3.19.1-1.1 | openSUSE-SU-2025:15414-1 |
| openSUSE Leap 15.6 | iperf | 3.19.1-150000.3.15.1 | SUSE-SU-2025:02749-1 |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.24 | iperf3 | 3.19.1-r0 | — |
| Alpine v3.23 | iperf3 | 3.19.1-r0 | — |
| Alpine v3.22 | iperf3 | 3.19.1-r0 | — |
Advisories 2
- openSUSE-SU-2025:15414-1 iperf-3.19.1-1.1 on GA media SUSE / openSUSE Security Updates · Mar 23, 2026
- SUSE-SU-2025:02749-1 Security update for iperf SUSE / openSUSE Security Updates · Feb 4, 2026