{"id":"CVE-2025-59351","aliases":["GHSA-4mhv-8rh3-4ghw","GO-2025-3970"],"url":"https://o3.security/vulnerability/CVE-2025-59351","summary":"Dragonfly possibly panics due to nil pointer dereference when using variables created alongside an error","details":"### Impact\nWe found two instances in the DragonFly codebase where the first return value of a function is dereferenced even when the function returns an error (figures 9.1 and 9.2). This can result in a nil dereference, and cause code to panic. The codebase may contain additional instances of the bug.\n\n```golang\nrequest, err := source.NewRequestWithContext(ctx, parentReq.Url,\nparentReq.UrlMeta.Header)\nif err != nil {\n       log.Errorf(\"generate url [%v] request error: %v\", request.URL, err)\n       span.RecordError(err)\n       return err\n}\n```\n\nEve is a malicious actor operating a peer machine. She sends a dfdaemonv1.DownRequest request to her peer Alice. Alice’s machine receives the request, resolves a nil variable in the server.Download method, and panics.\n\n### Patches\n\n- Dragonfy v2.1.0 and above.\n\n### Workarounds\n\nThere are no effective workarounds, beyond upgrading.\n\n### References\n\nA third party security audit was performed by Trail of Bits, you can see the [full report](https://github.com/dragonflyoss/dragonfly/blob/main/docs/security/dragonfly-comprehensive-report-2023.pdf).\n\nIf you have any questions or comments about this advisory, please email us at [dragonfly-maintainers@googlegroups.com](mailto:dragonfly-maintainers@googlegroups.com).","published":"2025-09-17T19:46:41.322Z","modified":"2026-08-12T03:51:32.493498032Z","cvss":null,"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"Go","name":"github.com/dragonflyoss/dragonfly","fixedVersion":"2.1.0"},{"ecosystem":"Go","name":"d7y.io/dragonfly/v2","fixedVersion":"2.1.0"}],"fix":null,"references":[{"type":"WEB","url":"https://github.com/dragonflyoss/dragonfly/blob/main/docs/security/dragonfly-comprehensive-report-2023.pdf"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/59xxx/CVE-2025-59351.json"},{"type":"ADVISORY","url":"https://github.com/dragonflyoss/dragonfly/security/advisories/GHSA-4mhv-8rh3-4ghw"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-59351"},{"type":"PACKAGE","url":"https://github.com/dragonflyoss/dragonfly"},{"type":"WEB","url":"https://pkg.go.dev/vuln/GO-2025-3970"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-12T03:51:32.493498032Z"}}