cve/2019/CVE-2019-11487.md

CVE-2019-11487

Description

The Linux kernel before 5.1-rc5 allows page->_refcount reference count overflow, with resultant use-after-free issues, if about 140 GiB of RAM exists. This is related to fs/fuse/dev.c, fs/pipe.c, fs/splice.c, include/linux/mm.h, include/linux/pipe_fs_i.h, kernel/trace/trace.c, mm/gup.c, and mm/hugetlb.c. It can occur with FUSE requests.

POC

Reference

• https://usn.ubuntu.com/4115-1/
• https://usn.ubuntu.com/4118-1/
• https://www.oracle.com/security-alerts/cpuApr2021.html

Github

• https://github.com/ARPSyndicate/cvemon