{"id":"DEBIAN-CVE-2026-116591","details":"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.","modified":"2026-11-01T22:00:10.755636658Z","published":"2026-10-26T22:16:55.783Z","upstream":["CVE-2026-116591"],"references":[{"type":"ADVISORY","url":"https://security-tracker.debian.org/tracker/CVE-2026-116591"}],"affected":[{"package":{"name":"golang-github-klauspost-compress","ecosystem":"Debian:12","purl":"pkg:deb/debian/golang-github-klauspost-compress?arch=source&distro=bookworm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.15.12+ds1-3","1.17.0+ds1-1","1.17.0+ds1-1~exp1","1.17.10+ds1-1","1.17.11+ds1-1","1.17.2+ds1-1","1.17.7+ds1-1","1.17.9+ds1-1","1.17.9+ds1-1~bpo12+1","1.18.0+ds1-1","1.18.1+ds1-1","1.18.6+ds1-1","1.18.6+ds1-2","1.19.0+ds1-1","1.19.0+ds1-2","1.20.0+ds1-1","1.20.3+ds1-1"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-116591.json"}},{"package":{"name":"golang-github-klauspost-compress","ecosystem":"Debian:13","purl":"pkg:deb/debian/golang-github-klauspost-compress?arch=source&distro=trixie"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.18.0+ds1-1","1.18.1+ds1-1","1.18.6+ds1-1","1.18.6+ds1-2","1.19.0+ds1-1","1.19.0+ds1-2","1.20.0+ds1-1","1.20.3+ds1-1"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-116591.json"}},{"package":{"name":"golang-github-klauspost-compress","ecosystem":"Debian:14","purl":"pkg:deb/debian/golang-github-klauspost-compress?arch=source&distro=forky"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.20.3+ds1-1"}]}],"versions":["1.18.0+ds1-1","1.18.1+ds1-1","1.18.6+ds1-1","1.18.6+ds1-2","1.19.0+ds1-1","1.19.0+ds1-2","1.20.0+ds1-1"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-116591.json"}}],"schema_version":"1.9.2","severity":[{"type":"CVSS_V4","score":"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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X"}]}