Description
client.c in gdhcp in ConnMan through 1.41 could be used by network-adjacent attackers (operating a crafted DHCP server) to cause a stack-based buffer overflow and denial of service, terminating the connman process.
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 | connman | 1.41-3 | — |
| Debian 13 | connman | 1.41-3 | — |
| Debian 12 | connman | 1.41-3 | — |
| Debian 11 | connman | 1.36-2.2+deb11u2 | DSA-5416-1 |
| Debian 10 | connman | 1.36-2.1~deb10u5 | DLA-3397-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 22.04 LTS | connman | 1.36-2.3ubuntu0.1 | USN-6236-1 |
| Ubuntu 20.04 LTS | connman | 1.36-2ubuntu0.1 | USN-6236-1 |
Show 2 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 18.04 LTS | connman | 1.35-6ubuntu0.1~esm1 | USN-6236-1 |
| Ubuntu Pro 16.04 LTS | connman | 1.21-1.2+deb8u1ubuntu0.1~esm1 | USN-6236-1 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SUSE Package Hub 15 SP5 | connman | 1.42-bp155.4.3.1 | openSUSE-SU-2023:0369-1 |
| SUSE Package Hub 15 SP4 | connman | 1.42-bp154.2.6.1 | openSUSE-SU-2023:0370-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | connman | 1.42-1.1 | openSUSE-SU-2024:13420-1 |
| openSUSE Leap 15.5 | connman | 1.42-bp155.4.3.1 | openSUSE-SU-2023:0369-1 |
| openSUSE Leap 15.4 | connman | 1.42-bp154.2.6.1 | openSUSE-SU-2023:0370-1 |
Advisories 6
- USN-6236-1 connman vulnerabilities Ubuntu Security Notices (USN) · Jun 25, 2026
- DSA-5416-1 connman - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DLA-3397-1 connman - security update Debian Security (DSA / DLA) · Mar 9, 2026
- openSUSE-SU-2024:13420-1 connman-1.42-1.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2023:0370-1 Security update for connman SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2023:0369-1 Security update for connman SUSE / openSUSE Security Updates · May 7, 2025