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…

GitHub Advisory Database에서 읽기

2026. 10. 20. 오후 11:33, GitHub Advisory Database에서 "Compress/s2: Integer Overflow or Wraparound and Out-of-bounds Write in compress"을(를) 게시했습니다 (유형: 취약점 권고). 심각도는 "높음"(high)입니다. 관련 기술: Go, GitHub. CVE: CVE-2026-63209.