Description
A Allocation of Resources Without Limits or Throttling vulnerability in sslh allows attackers to easily exhaust the file descriptors in sslh and deny legitimate users service.This issue affects sslh before 2.2.4.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| https://github.com/yrutschle/sslh/releases/tag/v2.2.4 | sslh | ? – < 2.2.4 | 2.2.4 |
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 | sslh | 2.3.1-1 | — |
| Debian 13 | sslh | No fix yet | — |
| Debian 12 | sslh | No fix yet | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.10 | sslh | No fix yet | — |
| Ubuntu 26.04 LTS | sslh | No fix yet | — |
| Ubuntu 25.10 | sslh | No fix yet | — |
| Ubuntu 22.04 LTS | sslh | No fix yet | — |
Show 4 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 24.04 LTS | sslh | No fix yet | — |
| Ubuntu Pro 20.04 LTS | sslh | No fix yet | — |
| Ubuntu Pro 18.04 LTS | sslh | No fix yet | — |
| Ubuntu Pro 16.04 LTS | sslh | No fix yet | — |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | sslh | 2.2.4-1.1 | openSUSE-SU-2025:15194-1 |
Advisories 1
- openSUSE-SU-2025:15194-1 sslh-2.2.4-1.1 on GA media SUSE / openSUSE Security Updates · Mar 23, 2026