Description
In ConnMan through 1.44, the lookup string in ns_resolv in dnsproxy.c can be NULL or an empty string when the TC (Truncated) bit is set in a DNS response. This allows attackers to cause a denial of service (application crash) or possibly execute arbitrary code, because those lookup values lead to incorrect length calculations and incorrect memcpy operations.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| ConnMan | ConnMan | ≤ 1.44 | — |
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 | 1.44-2 | — |
| Debian 13 | connman | 1.44-2 | — |
| Debian 12 | connman | No fix yet | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.10 | connman | No fix yet | — |
| Ubuntu 26.04 LTS | connman | No fix yet | — |
| Ubuntu 25.10 | connman | No fix yet | — |
| Ubuntu 24.04 LTS | connman | No fix yet | — |
| Ubuntu 22.04 LTS | connman | No fix yet | — |
Show 3 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 20.04 LTS | connman | No fix yet | — |
| Ubuntu Pro 18.04 LTS | connman | No fix yet | — |
| Ubuntu Pro 16.04 LTS | connman | No fix yet | — |