Description
An exploitable denial-of-service vulnerability exists in the hostapd 2.6, where an attacker could trigger AP to send IAPP location updates for stations, before the required authentication process has completed. This could lead to different denial of service scenarios, either by causing CAM table attacks, or by leading to traffic flapping if faking already existing clients in other nearby Aps of the same wireless infrastructure. An attacker can forge Authentication and Association Request packets to trigger this vulnerability.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| — | W1.f1 | hostapd version 2.6 Ubiquiti AP-AC-Pro firmware 4.0.10.9653 | — |
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.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | wpa | 2:2.9+git20200213+877d9a0-1 | — |
| Debian 13 | wpa | 2:2.9+git20200213+877d9a0-1 | — |
| Debian 12 | wpa | 2:2.9+git20200213+877d9a0-1 | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 20.04 LTS | wpa | No fix yet | — |
| Ubuntu 18.04 LTS | wpa | No fix yet | — |
| Ubuntu 16.04 LTS | wpa | No fix yet | — |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 14.04 LTS | wpa | No fix yet | — |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | hostapd | 2.12-1.1 | openSUSE-SU-2026:12398-1 |
Advisories 1
- openSUSE-SU-2026:12398-1 hostapd-2.12-1.1 on GA media SUSE / openSUSE Security Updates · Nov 4, 2026