An issue was discovered in the Linux kernel before 5.9.3. io_uring takes a non-refcounted reference to the files_struct of the process that submitted a request, causing execve() to incorrectly optimize unshare_fd(), aka CID-0f2122045b94. CREATE(Triage):(User=admin) CVE-2020-29534 (https://nvd.nist.gov/vuln/detail/CVE-2020-29534)
