cve/2018/CVE-2018-13093.md

CVE-2018-13093

Description

An issue was discovered in fs/xfs/xfs_icache.c in the Linux kernel through 4.17.3. There is a NULL pointer dereference and panic in lookup_slow() on a NULL inode->i_ops pointer when doing pathwalks on a corrupted xfs image. This occurs because of a lack of proper validation that cached inodes are free during allocation.

POC

Reference

• https://bugzilla.kernel.org/show_bug.cgi?id=199367
• https://bugzilla.kernel.org/show_bug.cgi?id=199367
• https://usn.ubuntu.com/4118-1/
• https://usn.ubuntu.com/4118-1/

Github

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