/usr/lib/python2.7/dist-packages/volatility/plugins/ is in volatility-profiles 20140130-1.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/python2.7/dist-packages/volatility/plugins/overlays/
/usr/lib/python2.7/dist-packages/volatility/plugins/overlays/linux/
/usr/lib/python2.7/dist-packages/volatility/plugins/overlays/linux/_Debian_Squeeze_2.6.32-5-686-bigmem_.zip
/usr/lib/python2.7/dist-packages/volatility/plugins/overlays/linux/_Debian_Squeeze_2.6.32-5-686_.zip
/usr/lib/python2.7/dist-packages/volatility/plugins/overlays/linux/_Debian_Squeeze_2.6.32-5-amd64_.zip
/usr/lib/python2.7/dist-packages/volatility/plugins/overlays/linux/_Debian_Squeeze_2.6.32-5-xen-686_.zip
/usr/lib/python2.7/dist-packages/volatility/plugins/overlays/linux/_Debian_Wheezy_3.2.0-4-686-pae_.zip
/usr/lib/python2.7/dist-packages/volatility/plugins/overlays/linux/_Debian_Wheezy_3.2.0-4-amd64_.zip
/usr/lib/python2.7/dist-packages/volatility/plugins/overlays/linux/_Ubuntu_Precise_12.04-desktop-amd64_kernel-3.8.0-29-generic_.zip
/usr/lib/python2.7/dist-packages/volatility/plugins/overlays/linux/_Ubuntu_Precise_12.04-desktop-i386_kernel-3.8.0-29-generic_.zip
/usr/lib/python2.7/dist-packages/volatility/plugins/overlays/linux/_Ubuntu_Quantal_12.10-desktop-amd64_kernel-3.5.0-45-generic_.zip
/usr/lib/python2.7/dist-packages/volatility/plugins/overlays/linux/_Ubuntu_Raring_13.04-desktop-amd64_kernel-3.8.0-35-generic_.zip
/usr/lib/python2.7/dist-packages/volatility/plugins/overlays/linux/_Ubuntu_Raring_13.04-desktop-i386_kernel-3.8.0-35-generic_.zip
/usr/lib/python2.7/dist-packages/volatility/plugins/overlays/linux/_Ubuntu_Saucy_13.10-desktop-amd64_kernel-3.11.0-15-generic_.zip
/usr/lib/python2.7/dist-packages/volatility/plugins/overlays/linux/_Ubuntu_Saucy_13.10-desktop-i386_kernel-3.11.0-15-generic_.zip