| Package | Affected versions | Patched versions |
|---|---|---|
| github.com/ipfs/go-unixfsnode | < 1.5.2 | 1.5.2 |
| go-unixfsnode | < 1.5.2 | 1.5.2 |
Trying to read malformed HAMT sharded directories can cause panics and virtual memory leaks. If you are reading untrusted user input, an attacker can then trigger a panic.
This is caused by a bogus fanout parameter in the HAMT directory nodes. This includes checks returned in ipfs/go-bitfield GHSA-2h6c-j3gf-xp9r, as well as limiting the fanout to <= 1024 (to avoid attempts of arbitrary sized allocations).
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