Debian Linux Security Advisory 3289-1 - Alexander Cherepanov discovered that p7zip is susceptible to a directory traversal vulnerability. While extracting an archive, it will extract symlinks and then follow them if they are referenced in further entries. This can be exploited by a rogue archive to write files outside the current directory.
4be0daf5b3f39172c01e0cf01217ee23e5f5eceee2070d75eb05fb357f095125