Description
hostapd before 2.6, in EAP mode, makes calls to the rand() and random() standard library functions without any preceding srand() or srandom() call, which results in inappropriate use of deterministic values. This was fixed in conjunction with CVE-2016-10743.
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 | 2:2.6-7 | — |
| Debian 13 | wpa | 2:2.6-7 | — |
| Debian 12 | wpa | 2:2.6-7 | — |
| Debian 9 | wpa | 2:2.4-1+deb9u7 | DLA-2318-1 |
| Debian 8 | wpa | 2.3-1+deb8u10 | DLA-2138-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| 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 3
- openSUSE-SU-2026:12398-1 hostapd-2.12-1.1 on GA media SUSE / openSUSE Security Updates · Nov 4, 2026
- DLA-2138-1 wpa - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DLA-2318-1 wpa - security update Debian Security (DSA / DLA) · Mar 9, 2026
References
- https://w1.fi/cgit/hostap/commit/?id=98a516eae8260e6fd5c48ddecf8d006285da7389
- [oss-security] 20200227 Hostapd fails at seeding PRNGS, leading to insufficient entropy (CVE-2016-10743 and CVE-2019-10064) mailing-list
- [oss-security] 20200227 Re: Hostapd fails at seeding PRNGS, leading to insufficient entropy (CVE-2016-10743 and CVE-2019-10064) mailing-list
- 20200227 Hostapd fails at seeding PRNGS, leading to insufficient entropy (CVE-2016-10743 and CVE-2019-10064) mailing-list
- http://packetstormsecurity.com/files/156573/Hostapd-Insufficient-Entropy.html
- [debian-lts-announce] 20200311 [SECURITY] [DLA 2138-1] wpa security update mailing-list
- [debian-lts-announce] 20200808 [SECURITY] [DLA 2318-1] wpa security update mailing-list