compress zstd: Panic on two-block frames

影響: go:github.com/klauspost/compress/zstd <= 1.20.1 → 1.20.2

A crafted ~27 KB two-block zstd frame makes DecodeAll and the streaming decoder panic with an out-of-range slice index instead of returning a decode error. The same bytes decode fine with the reference zstd. Any program that decompresses untrusted zstd input can be crashed by it. Reproduced on v1.20.0 and v1.20.1. Released in https://github.com/klauspost/compress/releases/tag/v1.20.2 Details The panic is in the FSE decoder that huff0.ReadTable uses to read a block's Huffman-weight table. Three…

GitHub Advisory Databaseで読む

2026/10/28 00:38、GitHub Advisory Databaseが「compress zstd: Panic on two-block frames」を公開しました (種別: 脆弱性アドバイザリ)。重大度は「重要」(high) です。関連する技術: Go、GitHub。CVE: CVE-2026-116591。