GHSA-3g4q-2f67-2gvh netfoil has a resource leak in LRU cache
A local attacker can exhaust memory in the netfoil LRU cache, causing service restarts due to resource leaks.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is GHSA-3g4q-2f67-2gvh?
GHSA-3g4q-2f67-2gvh is a denial of service vulnerability in github.com/tinfoil-factory/netfoil, published on 7 Jul 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
Summary
When an entry was removed from the LRU cache, a pointer to the removed element was not properly cleaned up.
Impact
A local attacker can get netfoil to use more memory. By default this is limited to 100MB via systemd, which would trigger service restarts when reached.
Which versions are affected by GHSA-3g4q-2f67-2gvh?
3 open source packages ship an affected version, including github.com/tinfoil-factory/netfoil.
| Package | Affected | Fixed in |
|---|---|---|
github.com/tinfoil-factory/netfoil Go | All versions | 0.3.0 |
github.com/tinfoil-factory/netfoil Go | All versions | 0.3.0 |
github.com/tinfoil-factory/netfoil Go | All versions | 0.3.0 |
How do I fix GHSA-3g4q-2f67-2gvh?
Upgrade github.com/tinfoil-factory/netfoil to 0.3.0 or later.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is GHSA-3g4q-2f67-2gvh being exploited?
There is no known exploitation of GHSA-3g4q-2f67-2gvh in the wild and no public exploit code.
Sources
Also known as GO-2026-5933.