CVE-2026-23259

In the Linux kernel, the following vulnerability has been resolved:

io_uring/rw: free potentially allocated iovec on cache put failure

If a read/write request goes through io_req_rw_cleanup() and has an

allocated iovec attached and fails to put to the rw_cache, then it may

end up with an unaccounted iovec pointer. Have io_rw_recycle() return

whether it recycled the request or not, and use that to gauge whether to

free a potential iovec or not.