CVE-2021-47505 | Linux Kernel up to 4.19.220/5.4.164/5.10.84/5.15.7 POLLFREE Handling signalfd_poll use after free
A vulnerability was found in Linux Kernel up to 4.19.220/5.4.164/5.10.84/5.15.7. It has been declared as critical. This vulnerability affects the function signalfd_poll of the component POLLFREE Handling. The manipulation leads to use after free.
This vulnerability was named CVE-2021-47505. Access to the local network is required for this attack to succeed. There is no exploit available.
It is recommended to upgrade the affected component.