Description
dhcp.c in dhcpcd before 7.2.1 contains a 1-byte read overflow with DHO_OPTSOVERLOADED.
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 12 | dhcpcd5 | 7.1.0-2 | — |
| Debian 8 | dhcpcd5 | 6.0.5-2+deb8u1 | DLA-1793-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 18.04 LTS | dhcpcd5 | No fix yet | — |
| Ubuntu 16.04 LTS | dhcpcd5 | No fix yet | — |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 14.04 LTS | dhcpcd5 | 6.0.5-2+deb8u1build0.14.04.1~esm1 | — |
Advisories 1
- DLA-1793-1 dhcpcd5 - security update Debian Security (DSA / DLA) · Mar 9, 2026