Summary
The buildah package provides a tool for facilitating building OCI container images. Among other things, buildah enables you to: Create a working container, either from scratch or using an image as a starting point; Create an image, either from a working container or using the instructions in a Dockerfile; Build both Docker and OCI images.
Security Fix(es):
* podman: Arbitrary file write when importing OCI archive (CVE-2025-11395)
* golang.org/x/crypto/ssh: golang.org/x/crypto/ssh: Denial of Service via crafted messages (CVE-2026-56855)
* net/[http:](http:) golang: golang: Denial of Service via crafted HTTP Range headers (CVE-2026-78667)
* crypto/x509: golang: crypto/x509: Man-in-the-middle attacks via untrusted intermediate certificates (CVE-2026-111943)
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.
Fixed packages 2
| Release | Package | Fixed in |
|---|---|---|
| AlmaLinux · 9 | buildah | 2:1.43.4-2.el9_8 |
| AlmaLinux · 9 | buildah-tests | 2:1.43.4-2.el9_8 |
Vulnerabilities 4
-
High 7.5
Prevent DoS on deadlocked established channel in golang.org/x/crypto/ssh
Previously, after a channel has been established, a malicious peer could send crafted messages that would deadlock the entire connection. Now, we handle all RFC 4254 channel messages; global requests are handled explicitly. Then, treat all other messages as a…
-
High 7.5
Lack of limit on size of parsed Range headers in net/http
When parsing a Range header containing a large number of small ranges, FileServer(FS), ServeContent, and ServeFile(FS) can consume an excessive amount of CPU.
-
Medium 6.8CVE-2026-111943 Public exploit
Distrust compromised intermediate certificates in crypto/x509
On most platforms, Go uses the given system root certificates. However, in some narrower cases, the system trust stores may not be updated without further action. To defend against the narrower set of cases that may remain affected, a denylist was added in cr…
-
Medium 5.5
Podman: arbitrary file write when importing oci archive
A flaw was found in Podman. If an attacker can pass a crafted tar archive to the `podman load` command, they can create files on the host machine with the privileges of the user running Podman.
References
-
report
https://access.redhat.com/security/cve/CVE-2025-11395
-
report
https://access.redhat.com/security/cve/CVE-2026-111943
-
report
https://access.redhat.com/security/cve/CVE-2026-56855
-
report
https://access.redhat.com/security/cve/CVE-2026-78667
-
report
https://bugzilla.redhat.com/2528050
-
report
https://bugzilla.redhat.com/2548334
-
report
https://bugzilla.redhat.com/2556068
-
advisory
https://errata.almalinux.org/9/ALSA-2026-90424.html