Description
An issue was discovered in the DNS proxy in Connman through 1.40. The TCP server reply implementation lacks a check for the presence of sufficient Header Data, leading to an out-of-bounds read.
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 | 1.36-2.4 | — |
| Debian 13 | connman | 1.36-2.4 | — |
| Debian 12 | connman | 1.36-2.4 | — |
| Debian 11 | connman | 1.36-2.2+deb11u1 | DSA-5231-1 |
| Debian 10 | connman | 1.36-2.1~deb10u4 | DLA-3144-1 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 9 | connman | 1.33-3+deb9u3 | DLA-2915-1 |
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 |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.24 | connman | 1.41-r0 | — |
| Alpine v3.23 | connman | 1.41-r0 | — |
| Alpine v3.22 | connman | 1.41-r0 | — |
| Alpine v3.21 | connman | 1.41-r0 | — |
| Alpine v3.20 | connman | 1.41-r0 | — |
Show 4 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.19 | connman | 1.41-r0 | — |
| Alpine v3.18 | connman | 1.41-r0 | — |
| Alpine v3.17 | connman | 1.41-r0 | — |
| Alpine v3.16 | connman | 1.41-r0 | — |
Advisories 4
- USN-6236-1 connman vulnerabilities Ubuntu Security Notices (USN) · Jun 25, 2026
- DSA-5231-1 connman - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DLA-3144-1 connman - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DLA-2915-1 connman - security update Debian Security (DSA / DLA) · Mar 9, 2026