Address CVE-2026-22868

[ermyas]

This PR adds a patch from Geth upstream that addresses CVE-2026-22868.

---

Note

Addresses a security issue in the p2p ECIES layer and publishes a new beta.

• Tightens ciphertext validation in crypto/ecies/ecies.go by requiring rLen + hLen + params.BlockSize (ensuring IV presence) instead of + 1 in Decrypt
• Bumps version metadata to beta.17 in params/version.go
• Adds v1.0.0-beta.17 entry to CHANGELOG.md noting the security fix (CVE-2026-22868)

^{Written by Cursor Bugbot for commit d4bfa98. This will update automatically on new commits. Configure here.}