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0c049ce432
commit 56c5485c9e444c2e85e11694b6c44f1338fc20fd upstream. It is possible for there to be pending frames in TXQs with a reference to the key cache entry that is being deleted. If such a key cache entry is cleared, those pending frame in TXQ might get transmitted without proper encryption. It is safer to leave the previously used key into the key cache in such cases. Instead, only clear the MAC address to prevent RX processing from using this key cache entry. This is needed in particularly in AP mode where the TXQs cannot be flushed on station disconnection. This change alone may not be able to address all cases where the key cache entry might get reused for other purposes immediately (the key cache entry should be released for reuse only once the TXQs do not have any remaining references to them), but this makes it less likely to get unprotected frames and the more complete changes may end up being significantly more complex. Signed-off-by: Jouni Malinen <jouni@codeaurora.org> Signed-off-by: Kalle Valo <kvalo@codeaurora.org> Link: https://lore.kernel.org/r/20201214172118.18100-2-jouni@codeaurora.org Cc: Pali Rohár <pali@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
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| README | ||
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.