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iw dev: Unnamed/non-netdev interface

During the ArchLinux installation, after having installed wpa_supplicant and iw I checked if something was wrong with iw dev:

[[email protected] /]# iw dev
      Unnamed/non-netdev interface
            wdev 0x3
            addr 7c:7a:91:d2:b3:c8
            type P2P-device
      Interface wlp3s0
            ifindex 3
            wdev 0x1
            addr 7c:7a:91:d2:b3:c7
            type managed
            channel 1 (2412 MHz), width: 20MHz, center1: 2412 MHz

The result was not the one I was expecting to be!

No worries, just check the wpa_supplicant security advisories here, where you can find how to mitigate it:

  • Merge the following commits to wpa_supplicant and rebuild it:
    P2P: Validate SSID element length before copying it (CVE-2015-1863)
    This patch is available from
  • Update to wpa_supplicant v2.5 or newer, once available;
  • Disable P2P (control interface command “P2P_SET disabled 1” or “p2p_disabled=1” (in each, if multiple interfaces used) wpa_supplicant configuration file;
  • Disable P2P from the build (remove CONFIG_P2P=y).

If you have not fixed the issue yet, but you can try following this post.

Hope to be helpful to you all,

Published by Daniele Dalla Torre

I'm a Civil Engineering but I love to learn everything about technology, from the basics to the new frontiers! Here my gpg public key!

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