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OpenAdvisories
High RLSA-2021:2291 1 CVE

Important: container-tools:2.0 security update

Published Jun 8, 2021 · Updated Feb 4, 2026

Ecosystem: Rocky Linux

Summary

The container-tools module contains tools for working with containers, notably podman, buildah, skopeo, and runc.

Security Fix(es):

* runc: vulnerable to symlink exchange attack (CVE-2021-30465)

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 36

ReleasePackageFixed in
Rocky Linux · 8 buildah 0:1.11.6-8.module+el8.4.0+559+c02fa3b2
Rocky Linux · 8 cockpit-podman 0:11-1.module+el8.5.0+770+e2f49861
Rocky Linux · 8 cockpit-podman 0:11-1.module+el8.4.0+559+c02fa3b2
Rocky Linux · 8 cockpit-podman 0:11-1.module+el8.5.0+708+6758137d
Rocky Linux · 8 conmon 2:2.0.15-1.module+el8.5.0+770+e2f49861
Rocky Linux · 8 conmon 2:2.0.15-1.module+el8.4.0+559+c02fa3b2
Rocky Linux · 8 conmon 2:2.0.15-1.module+el8.5.0+708+6758137d
Rocky Linux · 8 container-selinux 2:2.130.0-1.module+el8.5.0+770+e2f49861
Rocky Linux · 8 container-selinux 2:2.130.0-1.module+el8.4.0+559+c02fa3b2
Rocky Linux · 8 container-selinux 2:2.130.0-1.module+el8.5.0+708+6758137d
Rocky Linux · 8 containernetworking-plugins 0:0.8.3-4.module+el8.5.0+770+e2f49861
Rocky Linux · 8 containernetworking-plugins 0:0.8.3-4.module+el8.4.0+559+c02fa3b2
Rocky Linux · 8 containernetworking-plugins 0:0.8.3-4.module+el8.5.0+708+6758137d
Rocky Linux · 8 criu 0:3.12-9.module+el8.5.0+681+c9a1951f
Rocky Linux · 8 criu 0:3.12-9.module+el8.4.0+557+48ba8b2f
Rocky Linux · 8 fuse-overlayfs 0:0.7.8-1.module+el8.5.0+770+e2f49861
Rocky Linux · 8 fuse-overlayfs 0:0.7.8-1.module+el8.4.0+559+c02fa3b2
Rocky Linux · 8 fuse-overlayfs 0:0.7.8-1.module+el8.5.0+708+6758137d
Rocky Linux · 8 podman 0:1.6.4-26.module+el8.4.0+559+c02fa3b2
Rocky Linux · 8 podman 0:1.6.4-26.module+el8.5.0+708+6758137d
Rocky Linux · 8 python-podman-api 0:1.2.0-0.2.gitd0a45fe.module+el8.5.0+770+e2f49861
Rocky Linux · 8 python-podman-api 0:1.2.0-0.2.gitd0a45fe.module+el8.4.0+559+c02fa3b2
Rocky Linux · 8 python-podman-api 0:1.2.0-0.2.gitd0a45fe.module+el8.5.0+708+6758137d
Rocky Linux · 8 runc 0:1.0.0-65.rc10.module+el8.4.0+559+c02fa3b2
Rocky Linux · 8 skopeo 1:0.1.41-4.module+el8.5.0+770+e2f49861
Rocky Linux · 8 skopeo 1:0.1.41-4.module+el8.4.0+559+c02fa3b2
Rocky Linux · 8 skopeo 1:0.1.41-4.module+el8.5.0+708+6758137d
Rocky Linux · 8 slirp4netns 0:0.4.2-3.git21fdece.module+el8.5.0+770+e2f49861
Rocky Linux · 8 slirp4netns 0:0.4.2-3.git21fdece.module+el8.4.0+536+994a2182
Rocky Linux · 8 slirp4netns 0:0.4.2-3.git21fdece.module+el8.5.0+708+6758137d
Rocky Linux · 8 toolbox 0:0.0.7-1.module+el8.5.0+770+e2f49861
Rocky Linux · 8 toolbox 0:0.0.7-1.module+el8.4.0+559+c02fa3b2
Rocky Linux · 8 toolbox 0:0.0.7-1.module+el8.5.0+708+6758137d
Rocky Linux · 8 udica 0:0.2.1-2.module+el8.5.0+770+e2f49861
Rocky Linux · 8 udica 0:0.2.1-2.module+el8.4.0+559+c02fa3b2
Rocky Linux · 8 udica 0:0.2.1-2.module+el8.5.0+708+6758137d

Vulnerabilities 1

  • High 7.6
    CVE-2021-30465 EPSS 10%

    mount destinations can be swapped via symlink-exchange to cause mounts outside the rootfs

    runc before 1.0.0-rc95 allows a Container Filesystem Breakout via Directory Traversal. To exploit the vulnerability, an attacker must be able to create multiple containers with a fairly specific mount configuration. The problem occurs via a symlink-exchange a…

    buildah runc github.com/opencontainers/runc k3s Debian Ubuntu Azure Linux Alpine Go

References

  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=1954736