Vulnerabilities > CVE-2021-47360 - Unchecked Return Value vulnerability in Linux Kernel

Summary

In the Linux kernel, the following vulnerability has been resolved: binder: make sure fd closes complete During BC_FREE_BUFFER processing, the BINDER_TYPE_FDA object cleanup may close 1 or more fds. The close operations are completed using the task work mechanism -- which means the thread needs to return to userspace or the file object may never be dereferenced -- which can lead to hung processes. Force the binder thread back to userspace if an fd is closed during BC_FREE_BUFFER handling.

Vulnerable Configurations

Common Weakness Enumeration (CWE)

• CWE-252 - Unchecked Return Value

References