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Differential D32341

net80211: proper ssid length check in setmlme_assoc_adhoc()
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Authored by bz on Oct 6 2021, 6:50 PM.
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rG526370fb85db: net80211: proper ssid length check in setmlme_assoc_adhoc()
Summary

A user supplied SSID length is used without proper checks in
setmlme_assoc_adhoc() which can lead to copies beyond the end
of the user supplied buffer.
The ssid is a fixed size array for the ioctl and the argument
to setmlme_assoc_adhoc().
In addition to an ssid_len check of 0 also error in case the
ssid_len is larger than the size of the ssid array to prevent
problems.

PR: 254737
Reported by: Tommaso (cutesmilee.research protonmail.com)
MFC after: 3 days

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rS FreeBSD src repository - subversion
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Buildable 41989
Build 38877: arc lint + arc unit

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sys/
net80211/
2 lines

Diff 96362

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sys/net80211/ieee80211_ioctl.c

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