Security vulnerabilities and automated fixes for ipv6 issues
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A critical buffer overflow vulnerability was discovered in `uv-common.c`, where a hardcoded 40-byte buffer was used to store IPv6 addresses — 6 bytes too small for the maximum valid IPv6 string length of 46 characters. An attacker supplying a crafted, oversized IP address string could trigger a stack or heap buffer overflow, potentially leading to remote code execution or application crashes. The fix replaces the magic number with the platform-defined `INET6_ADDRSTRLEN` constant, ensuring the bu