Re: [Bug 206761] New: escape codes in network interface names causes chaos

On Thu, 05 Mar 2020 10:42:39 +0000
bugzilla-daemon@bugzilla.kernel.org wrote:

https://bugzilla.kernel.org/show_bug.cgi?id=206761

            Bug ID: 206761
           Summary: escape codes in network interface names causes chaos
           Product: Networking
           Version: 2.5
    Kernel Version: 5.6
          Hardware: All
                OS: Linux
              Tree: Mainline
            Status: NEW
          Severity: normal
          Priority: P1
         Component: Other
          Assignee: stephen@networkplumber.org
          Reporter: george.shuklin@gmail.com
        Regression: No

netlink permits creation of interfaces with escape codes. Suck names can trick
root by drawing at random places in terminal.


Minimal proof of concept:


echo -e '\x1B[2J'|xargs -I I ip link add I type dummy
ip l


(rollback): echo -e '\x1B[2J'|xargs -I I ip link del I

My opinion is that this is not a problem that can be addressed without breaking kernel ABI.