Description
An issue was discovered in Ubuntu wpa_supplicant that resulted in loading of arbitrary shared objects, which allows a local unprivileged attacker to escalate privileges to the user that wpa_supplicant runs as (usually root).
Membership in the netdev group or access to the dbus interface of wpa_supplicant allow an unprivileged user to specify an arbitrary path to a module to be loaded by the wpa_supplicant process; other escalation paths might exist.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Canonical | wpa_supplicant | 2:2.10-15 – < 2:2.10-21ubuntu0.1, 2:2.9.0-21build1 – < 2:2.10-6ubuntu2.1, 2:2.9-1ubuntu2 – < 2:2.9-1ubuntu4.4, 2.4-0ubuntu10 – < 2:2.6-15ubuntu2.8+esm1, 2.4-0ubuntu3 – < 2.4-0ubuntu6.8+esm1, 2.1-0ubuntu1 – < 2.1-0ubuntu1.7+esm5 | 2:2.10-21ubuntu0.1 |
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.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | wpa | 2:2.10-22 | — |
| Debian 13 | wpa | 2:2.10-22 | — |
| Debian 12 | wpa | 2:2.10-12+deb12u2 | DSA-5739-1 |
| Debian 11 | wpa | 2:2.9.0-21+deb11u2 | DSA-5739-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 24.04 LTS | wpa | 2:2.10-21ubuntu0.1 | USN-6945-1 |
| Ubuntu 22.04 LTS | wpa | 2:2.10-6ubuntu2.1 | USN-6945-1 |
| Ubuntu 20.04 LTS | wpa | 2:2.9-1ubuntu4.4 | USN-6945-1 |
| Ubuntu 18.04 LTS | wpa | 2:2.6-15ubuntu2.8+esm1 | USN-6945-1 |
| Ubuntu 16.04 LTS | wpa | 2.4-0ubuntu6.8+esm1 | USN-6945-1 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 14.04 LTS | wpa | 2.1-0ubuntu1.7+esm5 | USN-6945-1 |
Advisories 3
- USN-6945-1 wpa vulnerability Ubuntu Security Notices (USN) · Apr 22, 2026
- DSA-5739-1 wpa - security update Debian Security (DSA / DLA) · Mar 9, 2026
- WID-SEC-2024-1785 Ubuntu Linux (wpa_supplicant): Schwachstelle ermöglicht Privilegieneskalation BSI CERT-Bund (WID) · Aug 6, 2024