Import Source
https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-91200.json
JSON Data
https://api.osv.dev/v1/vulns/AZL-91200
Upstream
Published
2026-06-23T04:17:36Z
Modified
2026-09-19T05:33:49Z
Summary
CVE-2026-55653 affecting package openssh 9.8p1-10
Details

A flaw was found in OpenSSH. A malicious SSH server can exploit a double free vulnerability in the Diffie-Hellman Group Exchange (DH-GEX) client path. This occurs during FIPS (Federal Information Processing Standards) mode known-group validation when the client processes attacker-controlled DH-GEX group parameters. Successful exploitation leads to client-side process termination, resulting in a Denial of Service (DoS).

References

Affected packages

Azure Linux:3 / openssh

Package

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

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Last Affected
9.8p1-10

Database specific

source
"https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-91200.json"