The vulnerability of the io_worker_handle_work() function in the io_uring/io-wq.c module, an interface for asynchronous input/output in the Linux kernel, allows a attacker to cause a service failure.

The vulnerability of the ioworkerhandlework function in the iouring/io-wq.c module, which is part of the Linux kernel’s asynchronous input/output interface, is related to improper resource release. Exploiting this vulnerability could allow an attacker to cause a service failure...

Design/Logic Flaw

In the Linux kernel before 5.4.2, the iouring feature leads to requests that inadvertently have UID 0 and full capabilities, aka CID-181e448d8709. This is related to fs/io-wq.c, fs/iouring.c, and net/socket.c. For example, an attacker can bypass intended restrictions on adding an IPv4 address to...