Description
memcached 1.6.7 allows a Denial of Service via multi-packet uploads in UDP.
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 | memcached | 1.6.8+dfsg-1 | — |
| Debian 13 | memcached | 1.6.8+dfsg-1 | — |
| Debian 12 | memcached | 1.6.8+dfsg-1 | — |
| Debian 10 | memcached | 1.5.6-1.1+deb10u1 | DLA-3557-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 20.04 LTS | memcached | 1.5.22-2ubuntu0.3 | USN-6382-1 |
Show 2 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 18.04 LTS | memcached | 1.5.6-0ubuntu1.2+esm1 | USN-6382-1 |
| Ubuntu Pro 16.04 LTS | memcached | 1.4.25-2ubuntu1.5+esm1 | USN-6382-1 |
Advisories 3
- USN-6382-1 memcached vulnerability Ubuntu Security Notices (USN) · Jun 25, 2026
- DLA-3557-1 memcached - security update Debian Security (DSA / DLA) · Mar 9, 2026
- WID-SEC-2023-2216 memcached: Schwachstelle ermöglicht Denial of Service BSI CERT-Bund (WID) · Sep 19, 2023