CVE-2026-116591 - compress zstd: Panic on two-block frames

CVE-2026-116591 - compress zstd: Panic on two-block frames

https://cvefeed.io/rssfeed/latest.atom / Tue, 10/27/2026 - 01:11
CVE ID :CVE-2026-116591
Published : Oct. 26, 2026, 9:54 p.m. | 28 minutes ago
Description :compress provides various compression algorithms. Prior to 1.20.2, the zstd DecodeAll and streaming decoder paths can panic when a crafted two-block frame reaches huff0.ReadTable with an FSE normalized count of 32768 that readNCount stores in int16 as -32768. The wrapped count allows buildDtable to retain stale fse.Scratch decode-table state from the prior block, and nextFast then derives an out-of-range state and indexes beyond the table instead of returning a decode error. Both blocks are required to preserve and then reuse the stale state, allowing untrusted zstd input to crash an application. This issue is fixed in version 1.20.2.
Severity: 0.0 | NA
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