| id: GO-2026-5013 |
| modules: |
| - module: golang.org/x/crypto |
| versions: |
| - fixed: 0.52.0 |
| vulnerable_at: 0.51.0 |
| packages: |
| - package: golang.org/x/crypto/ssh |
| symbols: |
| - gcmCipher.readCipherPacket |
| derived_symbols: |
| - Dial |
| - NewClientConn |
| - NewServerConn |
| - curve25519sha256.Client |
| - curve25519sha256.Server |
| - dhGEXSHA.Client |
| - dhGEXSHA.Server |
| - dhGroup.Client |
| - dhGroup.Server |
| - ecdh.Client |
| - ecdh.Server |
| - mlkem768WithCurve25519sha256.Client |
| - mlkem768WithCurve25519sha256.Server |
| summary: Invoking byte arithmetic causes underflow and panic in golang.org/x/crypto/ssh |
| description: | |
| An incorrectly placed cast from bytes to int |
| allowed for server-side panic in the AES-GCM |
| packet decoder for well-crafted inputs. |
| credits: |
| - Maciej Kawka |
| references: |
| - report: https://go.dev/issue/79561 |
| - web: https://groups.google.com/g/golang-announce/c/a082jnz-LvI |
| - fix: https://go.dev/cl/781620 |
| cve_metadata: |
| id: CVE-2026-46597 |
| cwe: 'CWE-191: Integer Underflow (Wrap or Wraparound)' |
| source: |
| id: go-security-team |
| review_status: REVIEWED |
