| Package | Affected versions | Patched versions |
|---|---|---|
| github.com/ipfs/go-unixfs | < 0.4.3 | 0.4.3 |
| go-unixfs | < 0.4.3 | 0.4.3 |
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 bogus fanout parameter in the HAMT directory nodes.
This include 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).
Do not feed untrusted user data to the decoding functions.
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