CVE-2021-47360

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.

• linux linux kernel (>= 5.0 < 5.4.150) • linux linux kernel (>= 5.5 < 5.10.70) • linux linux kernel (>= 5.11 < 5.14.9) • linux linux kernel 4.20.1 • linux linux kernel 5.15