GHSA-g99p-47x7-mq88

Source

https://github.com/advisories/GHSA-g99p-47x7-mq88

Import Source

https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2025/09/GHSA-g99p-47x7-mq88/GHSA-g99p-47x7-mq88.json

JSON Data

https://api.osv.dev/v1/vulns/GHSA-g99p-47x7-mq88

Aliases

CVE-2025-59942

Published

2025-09-29T20:40:08Z

Modified

2025-09-30T15:16:09Z

Severity

7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator

Summary

go-f3 module vulnerable to integer overflow leading to panic

Details

Impact

Filecoin nodes consuming F3 messages are vulnerable. go-f3 panics when it validates a "poison" messages. A "poison" message can can cause integer overflow in the signer index validation. In Lotus' case, the whole node will crash.

There is no barrier to entry. An attacker doesn't need any power to pull off this attack.

These malicious messages aren't self-propagating since the bug is in the validator. An attacker needs to directly send the message to all targets.

Patches

The fix was merged and released with go-f3 0.8.7. All node software (Lotus, Forest, Venus) are using a patched version of go-f3 with their updates for the nv27 network upgrade.

go-f3 now does proper overflow checking using math.MaxInt64 comparison and returns error "justificationPower overflow" when overflow would occur.

Workarounds

The are no immediate workarounds available. Nodes should upgrade to the patched version, which they will have done if participating in nv27 on Filecoin mainnet.

Credits

The initial finding(unrelated path) was reported by 0xNirix via bug bounty program which wasn't high issue. The further digging by developers led to this finding. Thank you for the contributions.

Database specific

{
    "severity": "HIGH",
    "github_reviewed": true,
    "nvd_published_at": "2025-09-29T23:15:32Z",
    "github_reviewed_at": "2025-09-29T20:40:08Z",
    "cwe_ids": [
        "CWE-190"
    ]
}

References

Affected packages

Go / github.com/filecoin-project/go-f3

Package

Name: github.com/filecoin-project/go-f3; View open source insights on deps.dev
Purl: pkg:golang/github.com/filecoin-project/go-f3

Affected ranges

Type: SEMVER
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

0.8.7