protonscr

nmap crashes steam client

steamopen Steam client
ValveSoftware/steam-for-linux#7651 · opened 2021-02-11 by naoliv · updated 2021-02-21 · 1 comments · github
Nnaoliv 2021-02-11 github

Your system information

  • Steam client version (build number or date): Feb 5 2021, at 02:23:56
  • Distribution (e.g. Ubuntu): Debian sid
  • Opted into Steam client beta?: No
  • Have you checked for system updates?: Yes

Please describe your issue in as much detail as possible:

The steam client listens on two local TCP ports: 27060 and 57343.
But when trying to run nmap against them, the client crashes (while, of course, it shouldn't).

It crashes at the "service scan" part of nmap (version 7.91, if it's important)).

Steps for reproducing this issue:

  1. nmap -p 27060,57343 -T4 -O -A -v 127.0.0.1 when steam is open
Ssurfaceflinger 2021-02-21 github

Can replicate on updated Pop!_OS 20.04 with non-beta Feb 12 2021 Steam client from apt

Nothing extracted yet.