Thanks for taking the time to report this bug and helping to make Ubuntu better. There are some Distros that ship patches to the /dev/mem handler, but these changes are not supported by the upstream kernel, and Ubuntu has not had the resources to maintain a patch delta. Root users have the capacity to examine per-process memory as well, so fixing /dev/mem would still not change this. The primary reasons to stop /dev/mem access is to avoid things like root-kit installation.
I'm unmarking this as private, as it is already a known public issue with the Linux kernel's /dev/mem interface.
Please feel free to report any other bugs you may find.
Thanks for taking the time to report this bug and helping to make Ubuntu better. There are some Distros that ship patches to the /dev/mem handler, but these changes are not supported by the upstream kernel, and Ubuntu has not had the resources to maintain a patch delta. Root users have the capacity to examine per-process memory as well, so fixing /dev/mem would still not change this. The primary reasons to stop /dev/mem access is to avoid things like root-kit installation.
I'm unmarking this as private, as it is already a known public issue with the Linux kernel's /dev/mem interface.
Please feel free to report any other bugs you may find.