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CVE-2020-29372

Description

An issue was discovered in do_madvise in mm/madvise.c in the Linux kernel before 5.6.8. There is a race condition between coredump operations and the IORING_OP_MADVISE implementation, aka CID-bc0c4d1e176e.

POC

Reference

- http://packetstormsecurity.com/files/162117/Kernel-Live-Patch-Security-Notice-LSN-0075-1.html

- https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.6.8

- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=bc0c4d1e176eeb614dc8734fc3ace34292771f11

Github

- https://github.com/Live-Hack-CVE/CVE-2020-29372