Description
An invalid hostname option can trigger an assertion failure in the Kea DHCPv4 server process (kea-dhcp4), causing the server process to exit. Versions affected: 1.4.0 to 1.5.0, 1.6.0-beta1, and 1.6.0-beta2.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| ISC | Kea | 1.4.0 to 1.5.0, 1.6.0-beta1, 1.6.0-beta2 | — |
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 | isc-kea | 1.7.5-1 | — |
| Debian 13 | isc-kea | 1.7.5-1 | — |
| Debian 12 | isc-kea | 1.7.5-1 | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 18.04 LTS | isc-kea | 1.1.0-1ubuntu0.1~esm1 | USN-7759-1 |
| Ubuntu Pro 16.04 LTS | isc-kea | 1.0.0-1ubuntu0.1~esm1 | USN-7759-1 |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.24 | kea | 1.7.2-r0 | — |
| Alpine v3.23 | kea | 1.7.2-r0 | — |
| Alpine v3.22 | kea | 1.7.2-r0 | — |
| Alpine v3.21 | kea | 1.7.2-r0 | — |
| Alpine v3.20 | kea | 1.7.2-r0 | — |
Show 9 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.19 | kea | 1.7.2-r0 | — |
| Alpine v3.18 | kea | 1.7.2-r0 | — |
| Alpine v3.17 | kea | 1.7.2-r0 | — |
| Alpine v3.16 | kea | 1.7.2-r0 | — |
| Alpine v3.15 | kea | 1.7.2-r0 | — |
| Alpine v3.14 | kea | 1.7.2-r0 | — |
| Alpine v3.13 | kea | 1.7.2-r0 | — |
| Alpine v3.12 | kea | 1.7.2-r0 | — |
| Alpine v3.11 | kea | 1.7.2-r0 | — |
Advisories 1
- USN-7759-1 isc-kea vulnerabilities Ubuntu Security Notices (USN) · Jun 25, 2026