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 …
Exact source revision recorded 28 Oct 2026 00:56:46 UTC. It does not establish the source's current position. Latest evidence.
euvd · EUVD-2026-110497
Publishedcompress 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.
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Original publisher date fields
datePublished: Oct 26, 2026, 9:54:33 PM
dateUpdated: Oct 27, 2026, 2:16:30 PM
- Source published
- Oct 26, 2026, 9:54:33 PM (timezone not stated)
- Source modified
- Oct 27, 2026, 2:16:30 PM (timezone not stated)
- Observed here
- 28 Oct 2026 00:56:46 UTC
- Source terms
- ENISA EUVD · source terms and attribution apply
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EUVD CVSS 4.0 · 8.7 CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N