RLSA-2026:95272: Important: osbuild-composer security update
Published Nov 6, 2026
·Updated
A service for building customized OS artifacts, such as VM images and OSTree commits, that uses osbuild under the hood. Besides building images for local usage, it can also upload images directly to cloud. It is compatible with composer-cli and cockpit-composer clients.
Security Fix(es):
google.golang.org/grpc: gRPC-Go: Denial of Service via malformed RPC requests (CVE-2026-84445)
For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.
Affected Software
1 affected componentFixes available
rocky-linux/osbuild-composer<0:165.1-5.el9_8.1.rocky.0.1
0:165.1-5.el9_8.1.rocky.0.1
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
rocky-linux/osbuild-composerto a version that resolves this vulnerability.Fixed in 0:165.1-5.el9_8.1.rocky.0.1
Event History
Nov 6, 2026
Advisory Published
via OSV·12:04 PM
Data Sourced
via OSV·12:04 PM
DescriptionSeverityAffected Software