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David Gstir 04de7589e0 KEYS: trusted: dcp: fix NULL dereference in AEAD crypto operation
When sealing or unsealing a key blob we currently do not wait for
the AEAD cipher operation to finish and simply return after submitting
the request. If there is some load on the system we can exit before
the cipher operation is done and the buffer we read from/write to
is already removed from the stack. This will e.g. result in NULL
pointer dereference errors in the DCP driver during blob creation.

Fix this by waiting for the AEAD cipher operation to finish before
resuming the seal and unseal calls.

Cc: stable@vger.kernel.org # v6.10+
Fixes: 0e28bf61a5 ("KEYS: trusted: dcp: fix leak of blob encryption key")
Reported-by: Parthiban N <parthiban@linumiz.com>
Closes: https://lore.kernel.org/keyrings/254d3bb1-6dbc-48b4-9c08-77df04baee2f@linumiz.com/
Signed-off-by: David Gstir <david@sigma-star.at>
Reviewed-by: Jarkko Sakkinen <jarkko@kernel.org>
Signed-off-by: Jarkko Sakkinen <jarkko@kernel.org>
2024-11-04 21:24:24 +02:00
arch A trivial compile test fix for x86 2024-11-03 08:26:00 -10:00
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Documentation phy fixes for 6.12 2024-11-03 10:19:34 -10:00
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security KEYS: trusted: dcp: fix NULL dereference in AEAD crypto operation 2024-11-04 21:24:24 +02:00
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MAINTAINERS Char/Misc/IIO driver fixes for 6.12-rc6 2024-11-03 08:45:03 -10:00
Makefile Linux 6.12-rc6 2024-11-03 14:05:52 -10:00
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 reStructuredText 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.