Description
hostapd fails to process crafted RADIUS packets properly. When hostapd authenticates wi-fi devices with RADIUS authentication, an attacker in the position between the hostapd and the RADIUS server may inject crafted RADIUS packets and force RADIUS authentications to fail.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Jouni Malinen | hostapd | 2.11 and earlier | — |
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.
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP7 | wpa_supplicant | 2.11-150700.3.3.1 | SUSE-SU-2026:3103-1 |
| SLES 15 SP6 | wpa_supplicant | 2.10-150600.7.6.1 | SUSE-SU-2026:4492-1, SUSE-SU-2025:0977-1 |
| SLES 12 SP5 | wpa_supplicant | 2.9-23.23.1 | SUSE-SU-2026:3159-1 |
Show 6 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 15 SP6 | wpa_supplicant | 2.10-150600.7.11.1 | SUSE-SU-2026:4492-1 |
| SLE Micro 6.1 | wpa_supplicant | 2.11-slfo.1.1_2.1 | SUSE-SU-2026:23072-1 |
| SLE Micro 6.0 | wpa_supplicant | 2.10-6.1 | SUSE-SU-2026:23038-1 |
| SLE Micro 5.5 | wpa_supplicant | 2.10-150500.3.6.1 | SUSE-SU-2026:3490-1 |
| SLE Micro 5.4 | wpa_supplicant | 2.9-150000.4.42.1 | SUSE-SU-2026:3281-1 |
| SLE Micro 5.3 | wpa_supplicant | 2.9-150000.4.42.1 | SUSE-SU-2026:3281-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | hostapd | 2.11-2.1 | openSUSE-SU-2025:14890-1 |
| openSUSE Tumbleweed | wpa_supplicant | 2.11-4.1 | openSUSE-SU-2025:14899-1 |
| openSUSE Leap 16.0 | hostapd | 2.11-bp160.2.1 | openSUSE-SU-2026:20985-1 |
| openSUSE Leap 15.6 | wpa_supplicant | 2.10-150600.7.6.1 | SUSE-SU-2025:0977-1 |
Azure Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Azure Linux 3 | wpa_supplicant | 2.10-3 | — |
| Azure Linux 2 (CBL-Mariner) | wpa_supplicant | 2.10-3 | — |
Advisories 12
- SUSE-SU-2026:4492-1 Security update for wpa_supplicant SUSE / openSUSE Security Updates · Oct 6, 2026
- WID-SEC-2025-0523 hostapd (RADIUS): Schwachstelle ermöglicht Denial of Service BSI CERT-Bund (WID) · Oct 5, 2026
- SUSE-SU-2026:23072-1 Security update for wpa_supplicant SUSE / openSUSE Security Updates · Aug 14, 2026
- SUSE-SU-2026:23038-1 Security update for wpa_supplicant SUSE / openSUSE Security Updates · Aug 12, 2026
- SUSE-SU-2026:3490-1 Security update for wpa_supplicant SUSE / openSUSE Security Updates · Aug 4, 2026
- SUSE-SU-2026:3281-1 Security update for wpa_supplicant SUSE / openSUSE Security Updates · Jul 28, 2026
- SUSE-SU-2026:3159-1 Security update for wpa_supplicant SUSE / openSUSE Security Updates · Jul 22, 2026
- SUSE-SU-2026:3103-1 Security update for wpa_supplicant SUSE / openSUSE Security Updates · Jul 18, 2026
- openSUSE-SU-2026:20985-1 Security update for hostapd SUSE / openSUSE Security Updates · Jun 24, 2026
- SUSE-SU-2025:0977-1 Security update for wpa_supplicant SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2025:14899-1 wpa_supplicant-2.11-4.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2025:14890-1 hostapd-2.11-2.1 on GA media SUSE / openSUSE Security Updates · May 7, 2025