Podman: kernel: containers in shared ipc namespace are vulnerable to denial of service attack

A flaw was found in Podman. This issue may allow an attacker to create a specially crafted container that, when configured to share the same IPC with at least one other container, can create a large number of IPC resources in /dev/shm. The malicious container will continue to exhaust resources until it is out-of-memory (OOM) killed. While the malicious container's cgroup will be removed, the IPC resources it created are not. Those resources are tied to the IPC namespace that will not be removed until all containers using it are stopped, and one non-malicious container is holding the namespace open. The malicious container is restarted, either automatically or by attacker control, repeating the process and increasing the amount of memory consumed. With a container configured to restart always, such as `podman run --restart=always`, this can result in a memory-based denial of service of the system.

CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:N/A:H

未加控制的资源消耗(资源穷尽)

Podman 资源管理错误漏洞

Podman是Podman开源的一款用于在Linux系统上开发、管理和运行OCI容器的引擎。 Podman 5.0.0-dev及之前版本存在资源管理错误漏洞，该漏洞源于允许攻击者通过创建大量IPC资源来耗尽系统的内存资源，从而导致拒绝服务。

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