Note:
This project will be discontinued after December 13, 2021. [more]
2020-05-09
An issue was discovered in the Linux kernel 4.18 through 5.6.11 when unprivileged user namespaces are allowed. A user can create their own PID namespace, and mount a FUSE filesystem. Upon interaction with this FUSE filesystem, if the userspace component is terminated via a kill of the PID namespace's pid 1, it will result in a hung task, and resources being permanently locked up until system reboot. This can result in resource exhaustion.
Products | Linux_kernel |
Type | Uncontrolled Resource Consumption (CWE-400) |
First patch | - None (likely due to unavailable code) |
Links |
• https://github.com/sargun/fuse-example
• http://www.openwall.com/lists/oss-security/2020/08/24/1 • https://security.netapp.com/advisory/ntap-20200608-0001/ • https://sourceforge.net/p/fuse/mailman/message/36598753/ |