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| author | Johannes Berg <[email protected]> | 2021-05-11 20:02:46 +0200 |
|---|---|---|
| committer | Johannes Berg <[email protected]> | 2021-05-11 20:13:23 +0200 |
| commit | 270032a2a9c4535799736142e1e7c413ca7b836e (patch) | |
| tree | 762ad2b424fdfb30f852e47ab3b6e12040eef2d9 /lib/test_fortify/write_overflow-strncpy-src.c | |
| parent | 2b8a1fee3488c602aca8bea004a087e60806a5cf (diff) | |
mac80211: drop A-MSDUs on old ciphers
With old ciphers (WEP and TKIP) we shouldn't be using A-MSDUs
since A-MSDUs are only supported if we know that they are, and
the only practical way for that is HT support which doesn't
support old ciphers.
However, we would normally accept them anyway. Since we check
the MMIC before deaggregating A-MSDUs, and the A-MSDU bit in
the QoS header is not protected in TKIP (or WEP), this enables
attacks similar to CVE-2020-24588. To prevent that, drop A-MSDUs
completely with old ciphers.
Cc: [email protected]
Link: https://lore.kernel.org/r/20210511200110.076543300172.I548e6e71f1ee9cad4b9a37bf212ae7db723587aa@changeid
Signed-off-by: Johannes Berg <[email protected]>
Diffstat (limited to 'lib/test_fortify/write_overflow-strncpy-src.c')
0 files changed, 0 insertions, 0 deletions