{"schemaVersion":3,"id":"CVE-2026-56392","aliases":["RHBA-2026:47115","RHSA-2026:40724","RHSA-2026:66403","UBUNTU-CVE-2026-56392","DEBIAN-CVE-2026-56392"],"status":"published","duplicateOf":null,"title":null,"description":"GNU coreutils unexpand is vulnerable to a heap-based buffer overflow due to an integer overflow during buffer allocation when processing large tab stop (-t) values. 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