AZL-111188

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Import Source
https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-111188.json
JSON Data
https://api.osv.dev/v1/vulns/AZL-111188
Upstream
Published
2026-10-27T14:16:36Z
Modified
2026-10-28T14:18:28Z
Summary
CVE-2026-117556 affecting package zchunk 1.3.2-1
Details

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. Attackers can supply a crafted .zck file whose header ends inside a compressed integer, causing reads past the heap header buffer and crashing the application.

References

Affected packages

Azure Linux:3 / zchunk

Package

Name
zchunk
Purl
pkg:rpm/azure-linux/zchunk

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Last Affected
1.3.2-1

Database specific

source
"https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-111188.json"