CVE-2026-117556

zchunk before 1.5.5 contains a heap out-of-bounds read vulnerability in readpreface in src/lib/header.c that passes the total header length instead of remaining bytes to compint parsing functions. Attackers can supply a crafted .zck file whose header ends inside a compressed integer, causing read...

CVE-2026-117556

Versions of zchunk prior to 1.5.5 are vulnerable to a heap out-of-bounds read in the read_preface() function located in src/lib/header.c. The vulnerability occurs because the software passes the total header length instead of the remaining bytes to compint parsing functions. An attacker can provi...

CVE-2026-117556 zchunk before 1.5.5 Heap Out-of-Bounds Read via read_preface()

zchunk before 1.5.5 contains a heap out-of-bounds read vulnerability in readpreface in src/lib/header.c that passes the total header length instead of remaining bytes to compint parsing functions. Attackers can supply a crafted .zck file whose header ends inside a compressed integer, causing read...

EUVD-2026-110834

zchunk before 1.5.5 contains a heap out-of-bounds read vulnerability in readpreface in src/lib/header.c that passes the total header length instead of remaining bytes to compint parsing functions. Attackers can supply a crafted .zck file whose header ends inside a compressed integer, causing read...