vulnerability

Alma Linux: CVE-2025-52565: Important: runc security update (Multiple Advisories)

Severity
6
CVSS
(AV:L/AC:H/Au:S/C:C/I:C/A:C)
Published
Nov 7, 2025
Added
Nov 11, 2025
Modified
Mar 18, 2026

Description

runc is a CLI tool for spawning and running containers according to the OCI specification. Versions 1.0.0-rc3 through 1.2.7, 1.3.0-rc.1 through 1.3.2, and 1.4.0-rc.1 through 1.4.0-rc.2, due to insufficient checks when bind-mounting `/dev/pts/$n` to `/dev/console` inside the container, an attacker can trick runc into bind-mounting paths which would normally be made read-only or be masked onto a path that the attacker can write to. This attack is very similar in concept and application to CVE-2025-31133, except that it attacks a similar vulnerability in a different target (namely, the bind-mount of `/dev/pts/$n` to `/dev/console` as configured for all containers that allocate a console). This happens after `pivot_root(2)`, so this cannot be used to write to host files directly -- however, as with CVE-2025-31133, this can load to denial of service of the host or a container breakout by providing the attacker with a writable copy of `/proc/sysrq-trigger` or `/proc/sys/kernel/core_pattern` (respectively). This issue is fixed in versions 1.2.8, 1.3.3 and 1.4.0-rc.3.

Solutions

alma-upgrade-aardvark-dnsalma-upgrade-buildahalma-upgrade-buildah-testsalma-upgrade-cockpit-podmanalma-upgrade-conmonalma-upgrade-container-selinuxalma-upgrade-containernetworking-pluginsalma-upgrade-containers-commonalma-upgrade-critalma-upgrade-criualma-upgrade-criu-develalma-upgrade-criu-libsalma-upgrade-crunalma-upgrade-fuse-overlayfsalma-upgrade-libslirpalma-upgrade-libslirp-develalma-upgrade-netavarkalma-upgrade-oci-seccomp-bpf-hookalma-upgrade-podmanalma-upgrade-podman-catatonitalma-upgrade-podman-dockeralma-upgrade-podman-gvproxyalma-upgrade-podman-pluginsalma-upgrade-podman-remotealma-upgrade-podman-testsalma-upgrade-python3-criualma-upgrade-python3-podmanalma-upgrade-runcalma-upgrade-skopeoalma-upgrade-skopeo-testsalma-upgrade-slirp4netnsalma-upgrade-toolboxalma-upgrade-toolbox-testsalma-upgrade-udica
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