Import Source
https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-99174.json
JSON Data
https://api.osv.dev/v1/vulns/AZL-99174
Upstream
Published
2026-09-03T13:06:20Z
Modified
2026-09-11T05:28:44Z
Summary
CVE-2026-85091 affecting package cloud-hypervisor 52.0.152-1
Details

zlib versions 1.3.1.2 through 1.3.2 contain a heap buffer overflow vulnerability in the gz_vacate() function when processing non-blocking gzwrite() operations with stale external buffer pointers. Attackers can trigger the overflow by calling gzprintf() or gzvprintf() after a write stall, causing an unchecked memmove() to write beyond the internal input buffer boundary.

References

Affected packages

Azure Linux:3 / cloud-hypervisor

Package

Name
cloud-hypervisor
Purl
pkg:rpm/azure-linux/cloud-hypervisor

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Last Affected
52.0.152-1

Database specific

source
"https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-99174.json"