CVE-2019-11599

EIP tracks 1 public exploit for CVE-2019-11599. PoCs published by Google Security Research.

AI-analyzed exploit summary This PoC demonstrates a use-after-free vulnerability in the Linux kernel's `elf_core_dump` function, triggered by concurrent userfaultfd operations during core dumping. The exploit leverages race conditions between `userfaultfd_unregister` and core dumping to cause a kernel crash.

The coredump implementation in the Linux kernel before 5.0.10 does not use locking or other mechanisms to prevent vma layout or vma flags changes while it runs, which allows local users to obtain sensitive information, cause a denial of service, or possibly have unspecified other impact by triggering a race condition with mmget_not_zero or get_task_mm calls. This is related to fs/userfaultfd.c, mm/mmap.c, fs/proc/task_mmu.c, and drivers/infiniband/core/uverbs_main.c.