Summary
The container-tools module contains tools for working with containers, notably podman, buildah, skopeo, and runc.
Security Fix(es):
* net: golang: Go net package: Denial of Service via long CNAME response in LookupCNAME (CVE-2026-33811)
* golang.org/x/crypto/ssh: golang: golang.org/x/crypto/ssh: Denial of Service via crafted SSH certificate (CVE-2026-39835)
* podman: Podman: Information disclosure via malicious container image environment variables (CVE-2026-57231)
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 76
| Release | Package | Fixed in |
|---|---|---|
| AlmaLinux · 8 | aardvark-dns | 2:1.10.1-2.module_el8.10.0+3909+6e1c1eb7 |
| AlmaLinux · 8 | aardvark-dns | 2:1.10.1-2.module_el8.10.0+4089+ce72bbbe |
| AlmaLinux · 8 | aardvark-dns | 2:1.10.1-2.module_el8.10.0+4047+545787c4 |
| AlmaLinux · 8 | aardvark-dns | 2:1.10.1-2.module_el8.10.0+3901+4b80ecd7 |
| AlmaLinux · 8 | buildah | 2:1.33.14-4.module_el8.10.0+4213+0493256b |
| AlmaLinux · 8 | buildah-tests | 2:1.33.14-4.module_el8.10.0+4213+0493256b |
| AlmaLinux · 8 | cockpit-podman | 84.1-1.module_el8.10.0+4102+6c76e544 |
| AlmaLinux · 8 | conmon | 3:2.1.10-1.module_el8.10.0+3970+8445edf6 |
| AlmaLinux · 8 | conmon | 3:2.1.10-1.module_el8.10.0+4090+91932338 |
| AlmaLinux · 8 | conmon | 3:2.1.10-1.module_el8.10.0+4068+0e21408f |
| AlmaLinux · 8 | container-selinux | 2:2.229.0-3.module_el8.10.0+4213+0493256b |
| AlmaLinux · 8 | containernetworking-plugins | 1:1.4.0-8.module_el8.10.0+4136+16425343 |
| AlmaLinux · 8 | containers-common | 2:1-82.module_el8.10.0+3876+e55593a8 |
| AlmaLinux · 8 | containers-common | 2:1-82.module_el8.10.0+3901+4b80ecd7 |
| AlmaLinux · 8 | containers-common | 2:1-82.module_el8.10.0+4089+ce72bbbe |
| AlmaLinux · 8 | crit | 3.18-5.module_el8.10.0+4047+545787c4 |
| AlmaLinux · 8 | crit | 3.18-5.module_el8.10.0+3901+4b80ecd7 |
| AlmaLinux · 8 | crit | 3.18-5.module_el8.10.0+4120+03ad4b47 |
| AlmaLinux · 8 | crit | 3.18-5.module_el8.10.0+3845+87b84552 |
| AlmaLinux · 8 | criu | 3.18-5.module_el8.10.0+4089+ce72bbbe |
| AlmaLinux · 8 | criu | 3.18-5.module_el8.10.0+4120+03ad4b47 |
| AlmaLinux · 8 | criu | 3.18-5.module_el8.10.0+3876+e55593a8 |
| AlmaLinux · 8 | criu | 3.18-5.module_el8.10.0+3909+6e1c1eb7 |
| AlmaLinux · 8 | criu-devel | 3.18-5.module_el8.10.0+4016+efd18bf8 |
| AlmaLinux · 8 | criu-devel | 3.18-5.module_el8.10.0+4089+ce72bbbe |
| AlmaLinux · 8 | criu-devel | 3.18-5.module_el8.10.0+4068+0e21408f |
| AlmaLinux · 8 | criu-devel | 3.18-5.module_el8.10.0+3858+6ad51f9f |
| AlmaLinux · 8 | criu-libs | 3.18-5.module_el8.10.0+3970+8445edf6 |
| AlmaLinux · 8 | criu-libs | 3.18-5.module_el8.10.0+3909+6e1c1eb7 |
| AlmaLinux · 8 | criu-libs | 3.18-5.module_el8.10.0+3926+f12484f5 |
| AlmaLinux · 8 | criu-libs | 3.18-5.module_el8.10.0+4082+f7f0c95e |
| AlmaLinux · 8 | crun | 1.14.3-2.module_el8.10.0+4120+03ad4b47 |
| AlmaLinux · 8 | crun | 1.14.3-2.module_el8.10.0+4102+6c76e544 |
| AlmaLinux · 8 | crun | 1.14.3-2.module_el8.10.0+4082+f7f0c95e |
| AlmaLinux · 8 | fuse-overlayfs | 1.13-1.module_el8.10.0+4047+545787c4 |
| AlmaLinux · 8 | fuse-overlayfs | 1.13-1.module_el8.10.0+4082+f7f0c95e |
| AlmaLinux · 8 | fuse-overlayfs | 1.13-1.module_el8.10.0+3792+03eaed9c |
| AlmaLinux · 8 | fuse-overlayfs | 1.13-1.module_el8.10.0+4068+0e21408f |
| AlmaLinux · 8 | libslirp | 4.4.0-2.module_el8.10.0+4023+db236c53 |
| AlmaLinux · 8 | libslirp | 4.4.0-2.module_el8.10.0+4090+91932338 |
| AlmaLinux · 8 | libslirp | 4.4.0-2.module_el8.10.0+4089+ce72bbbe |
| AlmaLinux · 8 | libslirp | 4.4.0-2.module_el8.10.0+4120+03ad4b47 |
| AlmaLinux · 8 | libslirp-devel | 4.4.0-2.module_el8.10.0+4102+6c76e544 |
| AlmaLinux · 8 | libslirp-devel | 4.4.0-2.module_el8.10.0+4068+0e21408f |
| AlmaLinux · 8 | libslirp-devel | 4.4.0-2.module_el8.10.0+3970+8445edf6 |
| AlmaLinux · 8 | libslirp-devel | 4.4.0-2.module_el8.10.0+4082+f7f0c95e |
| AlmaLinux · 8 | netavark | 2:1.10.3-1.module_el8.10.0+4120+03ad4b47 |
| AlmaLinux · 8 | netavark | 2:1.10.3-1.module_el8.10.0+4023+db236c53 |
| AlmaLinux · 8 | netavark | 2:1.10.3-1.module_el8.10.0+3970+8445edf6 |
| AlmaLinux · 8 | netavark | 2:1.10.3-1.module_el8.10.0+4082+f7f0c95e |
| AlmaLinux · 8 | oci-seccomp-bpf-hook | 1.2.10-1.module_el8.10.0+4047+545787c4 |
| AlmaLinux · 8 | oci-seccomp-bpf-hook | 1.2.10-1.module_el8.10.0+4120+03ad4b47 |
| AlmaLinux · 8 | oci-seccomp-bpf-hook | 1.2.10-1.module_el8.10.0+3909+6e1c1eb7 |
| AlmaLinux · 8 | oci-seccomp-bpf-hook | 1.2.10-1.module_el8.10.0+4068+0e21408f |
| AlmaLinux · 8 | podman | 4:4.9.4-34.module_el8.10.0+4227+f1240cfc |
| AlmaLinux · 8 | podman-catatonit | 4:4.9.4-34.module_el8.10.0+4227+f1240cfc |
| AlmaLinux · 8 | podman-docker | 4:4.9.4-34.module_el8.10.0+4227+f1240cfc |
| AlmaLinux · 8 | podman-gvproxy | 4:4.9.4-34.module_el8.10.0+4227+f1240cfc |
| AlmaLinux · 8 | podman-plugins | 4:4.9.4-34.module_el8.10.0+4227+f1240cfc |
| AlmaLinux · 8 | podman-remote | 4:4.9.4-34.module_el8.10.0+4227+f1240cfc |
| AlmaLinux · 8 | podman-tests | 4:4.9.4-34.module_el8.10.0+4227+f1240cfc |
| AlmaLinux · 8 | python3-criu | 3.18-5.module_el8.10.0+3970+8445edf6 |
| AlmaLinux · 8 | python3-criu | 3.18-5.module_el8.10.0+3901+4b80ecd7 |
| AlmaLinux · 8 | python3-criu | 3.18-5.module_el8.10.0+4120+03ad4b47 |
| AlmaLinux · 8 | python3-criu | 3.18-5.module_el8.10.0+3876+e55593a8 |
| AlmaLinux · 8 | python3-podman | 4.9.0-3.module_el8.10.0+4016+efd18bf8 |
| AlmaLinux · 8 | runc | 4:1.2.9-4.module_el8.10.0+4136+16425343 |
| AlmaLinux · 8 | skopeo | 2:1.14.6-2.module_el8.10.0+4211+49ea0979 |
| AlmaLinux · 8 | skopeo-tests | 2:1.14.6-2.module_el8.10.0+4211+49ea0979 |
| AlmaLinux · 8 | slirp4netns | 1.2.3-1.module_el8.10.0+4047+545787c4 |
| AlmaLinux · 8 | slirp4netns | 1.2.3-1.module_el8.10.0+4023+db236c53 |
| AlmaLinux · 8 | slirp4netns | 1.2.3-1.module_el8.10.0+3926+f12484f5 |
| AlmaLinux · 8 | slirp4netns | 1.2.3-1.module_el8.10.0+4082+f7f0c95e |
| AlmaLinux · 8 | toolbox | 0.0.99.5.1-1.module_el8.10.0+4120+03ad4b47 |
| AlmaLinux · 8 | toolbox-tests | 0.0.99.5.1-1.module_el8.10.0+4120+03ad4b47 |
| AlmaLinux · 8 | udica | 0.2.6-21.module_el8.10.0+4068+0e21408f |
Vulnerabilities 3
-
High 7.5
Crash when handling long CNAME response in net
When using LookupCNAME with the cgo DNS resolver, a very long CNAME response can trigger a double-free of C memory and a crash.
-
High 7.5
Podman: Malformed Image can trick podman run into leaking host environment variables into the container
Podman is a tool for managing OCI containers and pods. From 1.8.1 until 5.8.4, a container image that contains a environment variable with just a key and no value can trick podman into passing that variable from the host into the container. This is made worse…
-
Medium 5.3
Invoking server panic during CheckHostKey/Authenticate in golang.org/x/crypto/ssh
SSH servers which use CertChecker as a public key callback without setting IsUserAuthority or IsHostAuthority could be caused to panic by a client presenting a certificate. CertChecker now returns an error instead of panicking when these callbacks are nil.
References
-
report
https://access.redhat.com/security/cve/CVE-2026-33811
-
report
https://access.redhat.com/security/cve/CVE-2026-39835
-
report
https://access.redhat.com/security/cve/CVE-2026-57231
-
report
https://bugzilla.redhat.com/2467822
-
report
https://bugzilla.redhat.com/2480680
-
report
https://bugzilla.redhat.com/2493620
-
advisory
https://errata.almalinux.org/8/ALSA-2026-38504.html