runc: container escape with malicious config due to /dev/console mount and related races

A flaw was found in runc. CVE-2025-52565 is very similar in concept and application toCVE-2025-31133, except that it exploits a flaw in /dev/console bind-mounts. When creating the /dev/console bind-mount to /dev/pts/$n, if an attacker replaces /dev/pts/$n with a symlink then runc will bind-mount...

Improper File Access

runc is vulnerable to improper file access. The vulnerability is due to insufficient validation of write targets in /proc during concurrent container execution with shared mounts, which allows an attacker to exploit race conditions and redirect writes to unintended procfs files...

ALSA-2025:21232 Important: container-tools:rhel8 security update

The container-tools module contains tools for working with containers, notably podman, buildah, skopeo, and runc. Security Fixes: runc: container escape via 'masked path' abuse due to mount race conditions CVE-2025-31133 runc: container escape with malicious config due to /dev/console mount and...

The vulnerability of the runc command, a tool for starting isolated containers, is related to the state of the race condition. Enabling link tracing allows attackers to compromise the confidentiality, integrity, and accessibility of the protected information.

The vulnerability of the runc command, used to execute isolated containers, is related to the state of the race condition that allows for the tracking of references. Exploiting this vulnerability could enable a hacker to compromise the confidentiality, integrity, and accessibility of the protecte...

Amazon Linux 2 : runc, --advisory ALAS2NITRO-ENCLAVES-2025-077 (ALASNITRO-ENCLAVES-2025-077)

The version of runc installed on the remote host is prior to 1.3.3-2. It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2NITRO-ENCLAVES-2025-077 advisory. Placeholder CVE. Details forthcoming CVE-2025-31133 net/url: insufficient validation of bracketed IPv6 hostnames...

Oracle Linux 9 : runc (ELSA-2025-19927)

The remote Oracle Linux 9 host has a package installed that is affected by multiple vulnerabilities as referenced in the ELSA-2025-19927 advisory. - fix CVE-2025-31133 CVE-2025-52565 CVE-2025-52881 Tenable has extracted the preceding description block directly from the Oracle Linux security...

SUSE SLED15 / SLES15 / openSUSE 15 Security Update : runc (SUSE-SU-2025:3950-1)

The remote SUSE Linux SLED15 / SLEDSAP15 / SLES15 / SLESSAP15 / openSUSE 15 host has a package installed that is affected by multiple vulnerabilities as referenced in the SUSE-SU-2025:3950-1 advisory. - CVE-2025-31133: Fixed container escape via 'masked path' abuse due to mount race conditions...

Amazon Linux 2 : runc, --advisory ALAS2NITRO-ENCLAVES-2025-072 (ALASNITRO-ENCLAVES-2025-072)

The version of runc installed on the remote host is prior to 1.3.2-2. It is, therefore, affected by a vulnerability as referenced in the ALAS2NITRO-ENCLAVES-2025-072 advisory. Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version...

AZL-70586 CVE-2025-52881 affecting package kubernetes for versions less than 1.30.10-18

runc is a CLI tool for spawning and running containers according to the OCI specification. In versions 1.2.7, 1.3.2 and 1.4.0-rc.2, an attacker can trick runc into misdirecting writes to /proc to other procfs files through the use of a racing container with shared mounts we have also verified thi...

CVE-2025-52881

runc is a CLI tool for spawning and running containers according to the OCI specification. In versions 1.2.7, 1.3.2 and 1.4.0-rc.2, an attacker can trick runc into misdirecting writes to /proc to other procfs files through the use of a racing container with shared mounts we have also verified thi...

CVE-2025-52881 runc: LSM labels can be bypassed with malicious config using dummy procfs files

runc is a CLI tool for spawning and running containers according to the OCI specification. In versions 1.2.7, 1.3.2 and 1.4.0-rc.2, an attacker can trick runc into misdirecting writes to /proc to other procfs files through the use of a racing container with shared mounts we have also verified thi...

CVE-2025-52881

runc is a CLI tool for spawning and running containers according to the OCI specification. In versions 1.2.7, 1.3.2 and 1.4.0-rc.2, an attacker can trick runc into misdirecting writes to /proc to other procfs files through the use of a racing container with shared mounts we have also verified thi...

CVE-2025-52565 container escape due to /dev/console mount and related races

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...

CVE-2025-52565 container escape due to /dev/console mount and related races

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...

CVE-2025-52565

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...

CVE-2025-52565

CVE-2025-52565 affects moby-runc (and thus the runc runtime) with versions less than 1.2.8-1. Affected component is the bind-mount of /dev/pts/$n to /dev/console, leading to container escapes or denial of service via writable gadget exposure. The connected MARINER advisories confirm an upgraded p...

EUVD-2025-37945

runc is a CLI tool for spawning and running containers according to the OCI specification. In versions 1.2.7 and below, 1.3.0-rc.1 through 1.3.1, 1.4.0-rc.1 and 1.4.0-rc.2 files, runc would not perform sufficient verification that the source of the bind-mount i.e., the container's /dev/null was...

Exploit for CVE-2025-31133

CVE-2025-31133 runc maskedPaths Exploit PoC WARNING:...

CVE-2025-52565

A flaw was found in runc. CVE-2025-52565 is very similar in concept and application toCVE-2025-31133, except that it exploits a flaw in /dev/console bind-mounts. When creating the /dev/console bind-mount to /dev/pts/$n, if an attacker replaces /dev/pts/$n with a symlink then runc will bind-mount...

SUSE CVE-2025-52881

runc is a CLI tool for spawning and running containers according to the OCI specification. In versions 1.2.7, 1.3.2 and 1.4.0-rc.2, an attacker can trick runc into misdirecting writes to /proc to other procfs files through the use of a racing container with shared mounts we have also verified thi...