Description
systemd-resolved through 233 allows remote attackers to cause a denial of service (daemon crash) via a crafted DNS response with an empty question section.
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 | systemd | 232-24 | — |
| Debian 13 | systemd | 232-24 | — |
| Debian 12 | systemd | 232-24 | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 16.04 LTS | systemd | 229-4ubuntu19 | — |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 12 SP3 | systemd | 228-150.9.3 | SUSE-SU-2017:2031-1 |
| SLES 12 SP2 | systemd | 228-149.3 | SUSE-SU-2017:1773-1 |
Show 2 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 12 SP3 | systemd | 228-150.9.3 | SUSE-SU-2017:2031-1 |
| SLES for SAP 12 SP2 | systemd | 228-149.3 | SUSE-SU-2017:1773-1 |
Advisories 2
- SUSE-SU-2017:1773-1 Security update for systemd SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2017:2031-1 Security update for systemd SUSE / openSUSE Security Updates · Feb 4, 2026