Linux io_uring Use-After-Free

The Linux kernel suffers from a use-after-free of struct ioevfd because ioeventfddosignal frees an object when the refcount reaches zero without waiting for the required grace period. Summary UAF of struct ioevfd because ioeventfddosignal frees an object when the refcount reaches zero without...

CVE-2025-21655: Use After Free

In the Linux kernel, the following vulnerability has been resolved: iouring/eventfd: ensure ioeventfdsignal defers another RCU period ioeventfddosignal is invoked from an RCU callback, but when dropping the reference to the ioevfd, it calls ioeventfdfree directly if the refcount drops to zero. Th...