Gentoo Linux Security Advisory 201006-8 – Race conditions when editing files could lead to symlink attacks or changes of ownerships of important files. Multiple race condition vulnerabilities have been discovered in nano. Versions less than 2.2.4 are affected.
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/90173/glsa-201006-08.txt
Source: https://packetstormsecurity.com/files/90173/Gentoo-Linux-Security-Advisory-201006-8.html