AI Score
Confidence
High
EPSS
Percentile
40.8%
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.
bugs.chromium.org/p/project-zero/issues/detail?id=2089
cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.9.3
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=0f2122045b946241a9e549c2a76cea54fa58a7ff