Compress/s2: Integer Overflow or Wraparound and Out-of-bounds Write in compress

影響: go:github.com/klauspost/compress <= 1.18.6 → 1.18.7

Signed Integer Overflow in s2.NewDict Summary A signed integer overflow vulnerability in s2.NewDict() allows an attacker to bypass repeat index validation by supplying a dictionary with a uvarint-encoded repeat value exceeding MaxInt64. When Dict.Encode() is subsequently called, the overflowed negative repeat value causes an out-of-bounds memory access via unsafe.Pointer arithmetic, crashing the process with SIGSEGV. Package - Name: github.com/klauspost/compress/s2 - Ecosystem: Go - Affected ve…

在 GitHub Advisory Database 阅读

2026/10/20 23:33，GitHub Advisory Database 发布了“Compress/s2: Integer Overflow or Wraparound and Out-of-bounds Write in compress”（类型：漏洞公告）。严重程度为“高危”（high）。相关技术：Go、GitHub。CVE：CVE-2026-63209。