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Red Hat Security Advisory

RHSA-2026:90996

Red Hat Hardened Images RPMs bug fix and enhancement update

Released 2026-10-27 · Red Hat rating Low · View on Red Hat →

Fixed in

Fixes 1 record

Priority LOW 30

zchunk before 1.5.5 contains a heap out-of-bounds read vulnerability in read_preface() in src/lib/header.c that passes the total header length instead of remaining bytes to compint parsing functions.

CVSS 4.0MEDIUM 5.3 Network No auth User interaction EPSS 0.00328 Published 2026-10-27 Fixed in 1.5.5 CWE-125