[ALSA-2026:49838] Important: osbuild-composer security, bug fix, and enhancement update
Type:
security
Severity:
important
Release date:
2026-08-12
Description:
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): * crypto/x509: golang: Go crypto/x509: Denial of Service via inefficient certificate chain validation (CVE-2026-32281) * crypto/x509: crypto/tls: golang: Go: Denial of Service vulnerability in certificate chain building (CVE-2026-32280) Bug Fix(es) and Enhancement(s): * bootupctl backend install --auto fails bootupd EFI metadata missing (JIRA:AlmaLinux-185745) 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.
Updated packages listed below:
Architecture Package Checksum
aarch64 osbuild-composer-core-165.1-4.el9_8.alma.1.aarch64.rpm 8b7590c0051174c9840b5d4ceeb4b6cf0cb7b26c8f5da9ac504953ac817c31ee
aarch64 osbuild-composer-worker-165.1-4.el9_8.alma.1.aarch64.rpm b555616b81bf2029af4e6c8a67a1c41e52223387c84ad56ee361e279bf9d39e1
aarch64 osbuild-composer-165.1-4.el9_8.alma.1.aarch64.rpm c9cdaa96f57abb8bb1df0f95854ed3ddef804d51104458e3bda41c7c43d72c02
ppc64le osbuild-composer-core-165.1-4.el9_8.alma.1.ppc64le.rpm 4b01f31659e5556b1ec5275dff492f1c8c2eaad6bfe355b6b2b625a827885064
ppc64le osbuild-composer-worker-165.1-4.el9_8.alma.1.ppc64le.rpm acb84a8caec9b8407c20f20eaa35ee1e7313d1f9a036ed0cc1040277b0d77e1d
ppc64le osbuild-composer-165.1-4.el9_8.alma.1.ppc64le.rpm c6f4df888f085b70011d62a3bcdabd4afe21e2d490bb6b1ed17d69466be2ba12
s390x osbuild-composer-core-165.1-4.el9_8.alma.1.s390x.rpm 02464d5289566e6465f9bb750dfdc87c9a21b13ffa75030d36499498c79b883a
s390x osbuild-composer-worker-165.1-4.el9_8.alma.1.s390x.rpm 18ea1d8aa772b104a096fb3d2165f92fb22382e7e3293721da5380f75a2befcd
s390x osbuild-composer-165.1-4.el9_8.alma.1.s390x.rpm a8b4fc666352164a556c03a14580a9df3d4f4f24b5aed88062c7e9b74bf84f7b
x86_64 osbuild-composer-165.1-4.el9_8.alma.1.x86_64.rpm 29c3844c807dc5975ecb84ccb1b9a77781b1dc662566487e133c2c803021456a
x86_64 osbuild-composer-worker-165.1-4.el9_8.alma.1.x86_64.rpm a7d9420c97738d50e2ea6c84ef299e1c72d9748d98f449638d94ad34d3b01918
x86_64 osbuild-composer-core-165.1-4.el9_8.alma.1.x86_64.rpm abafbb229aee409f5da8dde1e6340415b9d25a4ed92f9b563b5fec2d61487b15
Notes:
This page is generated automatically from Red Hat security data and has not been checked for errors. For clarification or corrections please contact the AlmaLinux Packaging Team.