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CVE-2014-2038

Description

The nfs_can_extend_write function in fs/nfs/write.c in the Linux kernel before 3.13.3 relies on a write delegation to extend a write operation without a certain up-to-date verification, which allows local users to obtain sensitive information from kernel memory in opportunistic circumstances by writing to a file in an NFS filesystem and then reading the same file.

POC

Reference

- http://www.ubuntu.com/usn/USN-2140-1

Github

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