cve/2020/CVE-2020-29373.md

CVE-2020-29373

Description

An issue was discovered in fs/io_uring.c in the Linux kernel before 5.6. It unsafely handles the root directory during path lookups, and thus a process inside a mount namespace can escape to unintended filesystem locations, aka CID-ff002b30181d.

POC

Reference

• https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.6
• https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=ff002b30181d30cdfbca316dadd099c3ca0d739c

Github

No PoCs found on GitHub currently.