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...

Unity Linux 20.1060e / 20.1070e Security Update: kernel (UTSA-2026-003322)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-003322 advisory. fs/namespace.c in the Linux kernel before 4.9 does not restrict how many mounts may exist in a mount namespace, which allows local users to cause a denial of service...

Unity Linux 20.1060a / 20.1070a Security Update: kernel (UTSA-2026-002230)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-002230 advisory. fs/namespace.c in the Linux kernel through 3.16.1 does not properly restrict clearing MNTNODEV, MNTNOSUID, and MNTNOEXEC and changing MNTATIMEMASK during a remount o...

Unity Linux 20.1060a / 20.1070a Security Update: kernel (UTSA-2026-002088)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-002088 advisory. The doremount function in fs/namespace.c in the Linux kernel through 3.16.1 does not maintain the MNTLOCKREADONLY bit across a remount of a bind mount, which allows...

Unity Linux 20.1060a / 20.1070a Security Update: kernel (UTSA-2026-003125)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-003125 advisory. fs/namespace.c in the Linux kernel before 4.9 does not restrict how many mounts may exist in a mount namespace, which allows local users to cause a denial of service...

Unity Linux 20.1060a / 20.1070a Security Update: kernel (UTSA-2026-002340)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-002340 advisory. The prependpath function in fs/dcache.c in the Linux kernel before 4.2.4 does not properly handle rename actions inside a bind mount, which allows local users to...

Astra Linux – Vulnerability in runc-app

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, runc did not perform sufficient verification to ensure that the source of the bind-mount i.e., the container’s /dev/null wa...

runc: container escape via 'masked path' abuse due to mount race conditions

A flaw was found in runc. This flaw exploits an issue with how masked paths are implementedin runc. When masking files, runc will bind-mount the container's /dev/null inode on top of the file. However, if an attacker can replace /dev/null with a symlink to some other procfs file, runc will instea...

CVE-2020-24264

Portainer 1.24.1 and earlier is affected by incorrect access control that may lead to remote arbitrary code execution. The restriction checks for bind mounts are applied only on the client-side and not the server-side, which can lead to spawning a container with bind mount. Once such a container ...

EUVD-2025-205226

In the Linux kernel, the following vulnerability has been resolved: landlock: Fix handling of disconnected directories Disconnected files or directories can appear when they are visible and opened from a bind mount, but have been renamed or moved from the source of the bind mount in a way that...

CVE-2025-68736

In the Linux kernel, the following vulnerability has been resolved: landlock: Fix handling of disconnected directories Disconnected files or directories can appear when they are visible and opened from a bind mount, but have been renamed or moved from the source of the bind mount in a way that...

CVE-2025-68736

In the Linux kernel, the following vulnerability has been resolved: landlock: Fix handling of disconnected directories Disconnected files or directories can appear when they are visible and opened from a bind mount, but have been renamed or moved from the source of the bind mount in a way that...

CVE-2025-68736

CVE-2025-68736 relates to the Linux kernel Landlock feature and the handling of disconnected directories opened via bind mounts. Root cause: when a directory/file opened through a disconnected path is renamed or moved, the mount point may be out of scope of the hierarchy walk, causing access righ...

USN-7851-2: runC regression

USN-7851-1 fixed vulnerabilities in runC. The introduction of a new upstream release has caused regressions in runc-app and runc-stable. This update fixes the problem. Original advisory details: Lei Wang and Li Fubang discovered that runC incorrectly handled masked paths. An attacker could possib...

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...

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...

MGASA-2025-0271 Updated opencontainers-runc packages fix security vulnerabilities

The way masked paths are implemented in runc can be exploited to cause the host system to crash or halt CVE-2025-31133 and a flaw in /dev/console bind-mounts can lead to container escape CVE-2025-52565. Also, arbitrary write gadgets and procfs write redirects could be used to engineer container...

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...

CVE-2025-31133 runc container escape via "masked path" abuse due to mount race conditions

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...

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...