Microsoft Security Response Center 中文 关注 CVE-2026-48863 Libsolv：libsolv 中 EDDSA PGP 签名验证的基于栈的缓冲区溢出可导致拒绝服务 CVE-2026-48863 Libsolv: stack-based buffer overflow in libsolv eddsa pgp signature verification allows denial of service msrc.microsoft.com
