CVE-2025-38247 userns and mnt_idmap leak in open_tree_attr(2)

In the Linux kernel, the following vulnerability has been resolved: userns and mntidmap leak in opentreeattr2 Once wantmountsetattr has returned a positive, it does require finishmountkattr to release -mntuserns. Failing domountsetattr does not change that. As the result, we can end up leaking...

CVE-2025-38247

CVE-2025-38247 concerns the Linux kernel: a leak of user namespaces and possibly mnt_idmap in open_tree_attr(2) due to not releasing ->mnt_userns after a positive result from want_mount_setattr(). The root cause is that finish_mount_kattr() must release the namespace, and if do_mount_setattr()...

CVE-2025-38247

In the Linux kernel, the following vulnerability has been resolved: userns and mntidmap leak in opentreeattr2 Once wantmountsetattr has returned a positive, it does require finishmountkattr to release -mntuserns. Failing domountsetattr does not change that. As the result, we can end up leaking...

PT-2025-28875 · Linux · Linux Kernel

Name of the Vulnerable Software and Affected Versions: Linux kernel affected versions not specified Description: A flaw exists in the Linux kernel related to userns and mnt idmap leaks within the open tree attr2 function. Specifically, a failure in do mount setattr does not release the mnt userns...

Qualys TRU Discovers Three Bypasses of Ubuntu Unprivileged User Namespace Restrictions

The Qualys Threat Research Unit TRU recently disclosed three security bypasses in Ubuntu's unprivileged user namespace restrictions. Qualys responsibly disclosed these vulnerabilities to the Ubuntu Security Team on January 15, 2025, and has been working with Ubuntu since then. Qualys TRU uncovere...

Linux Distros Unpatched Vulnerability : CVE-2023-25809

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - runc is a CLI tool for spawning and running containers according to the OCI specification. In affected versions it was found that rootless runc makes...

Linux Distros Unpatched Vulnerability : CVE-2015-4177

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - The collectmounts function in fs/namespace.c in the Linux kernel before 4.0.5 does not properly consider that it may execute after a path has been unmounted,...

Astra Linux – Vulnerability in libpod

A vulnerability was discovered in Podman, Buildah, and CRI-O. A symlink traversal vulnerability in the containers/storage library can cause Podman, Buildah, and CRI-O to hang, resulting in a denial of service through an OOM kill when running a malicious image using an automatically assigned user...

PT-2025-32554

Name of the Vulnerable Software and Affected Versions: Linux kernel affected versions not specified Description: The clone private mnt function did not properly verify that the caller has CAP SYS ADMIN privileges within the correct user namespace. This could potentially allow exposure of hidden...

Exploit for Use After Free in Linux Linux_Kernel

CVE-2024-1086 For learning purpose. Refer: - https://pwning...

Podman: Buildah: CRI-O: symlink traversal vulnerability in the containers/storage library can cause Denial of Service (DoS)

A vulnerability was found in Podman, Buildah, and CRI-O. A symlink traversal vulnerability in the containers/storage library can cause Podman, Buildah, and CRI-O to hang and result in a denial of service via OOM kill when running a malicious image using an automatically assigned user namespace...

Podman: Buildah: CRI-O: symlink traversal vulnerability in the containers/storage library can cause Denial of Service (DoS)

A vulnerability was found in Podman, Buildah, and CRI-O. A symlink traversal vulnerability in the containers/storage library can cause Podman, Buildah, and CRI-O to hang and result in a denial of service via OOM kill when running a malicious image using an automatically assigned user namespace...

Podman: Buildah: CRI-O: symlink traversal vulnerability in the containers/storage library can cause Denial of Service (DoS)

A vulnerability was found in Podman, Buildah, and CRI-O. A symlink traversal vulnerability in the containers/storage library can cause Podman, Buildah, and CRI-O to hang and result in a denial of service via OOM kill when running a malicious image using an automatically assigned user namespace...

Podman: Buildah: CRI-O: symlink traversal vulnerability in the containers/storage library can cause Denial of Service (DoS)

A vulnerability was found in Podman, Buildah, and CRI-O. A symlink traversal vulnerability in the containers/storage library can cause Podman, Buildah, and CRI-O to hang and result in a denial of service via OOM kill when running a malicious image using an automatically assigned user namespace...

Podman: Buildah: CRI-O: symlink traversal vulnerability in the containers/storage library can cause Denial of Service (DoS)

A vulnerability was found in Podman, Buildah, and CRI-O. A symlink traversal vulnerability in the containers/storage library can cause Podman, Buildah, and CRI-O to hang and result in a denial of service via OOM kill when running a malicious image using an automatically assigned user namespace...

Podman: Buildah: CRI-O: symlink traversal vulnerability in the containers/storage library can cause Denial of Service (DoS)

A vulnerability was found in Podman, Buildah, and CRI-O. A symlink traversal vulnerability in the containers/storage library can cause Podman, Buildah, and CRI-O to hang and result in a denial of service via OOM kill when running a malicious image using an automatically assigned user namespace...

Podman: Buildah: CRI-O: symlink traversal vulnerability in the containers/storage library can cause Denial of Service (DoS)

A vulnerability was found in Podman, Buildah, and CRI-O. A symlink traversal vulnerability in the containers/storage library can cause Podman, Buildah, and CRI-O to hang and result in a denial of service via OOM kill when running a malicious image using an automatically assigned user namespace...

Podman: Buildah: CRI-O: symlink traversal vulnerability in the containers/storage library can cause Denial of Service (DoS)

A vulnerability was found in Podman, Buildah, and CRI-O. A symlink traversal vulnerability in the containers/storage library can cause Podman, Buildah, and CRI-O to hang and result in a denial of service via OOM kill when running a malicious image using an automatically assigned user namespace...

ROS-20241029-03

The vulnerability in the Podman OCI container management and launching software tool is related to issues with the symbolic link issues when running a malicious image using the automatically assigned user namespace --userns=auto. Exploitation of the vulnerability could allow an attacker to create...

ROS-20241029-15

The vulnerability in the Podman OCI container management and launching software tool is related to issues with the symbolic link issues when running a malicious image using the automatically assigned user namespace --userns=auto. Exploitation of the vulnerability could allow an attacker to create...