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Ondrej Mosnacek aff7ed4851 selinux: log raw contexts as untrusted strings
These strings may come from untrusted sources (e.g. file xattrs) so they
need to be properly escaped.

Reproducer:
    # setenforce 0
    # touch /tmp/test
    # setfattr -n security.selinux -v 'kuřecí řízek' /tmp/test
    # runcon system_u:system_r:sshd_t:s0 cat /tmp/test
    (look at the generated AVCs)

Actual result:
    type=AVC [...] trawcon=kuřecí řízek

Expected result:
    type=AVC [...] trawcon=6B75C5996563C3AD20C599C3AD7A656B

Fixes: fede148324 ("selinux: log invalid contexts in AVCs")
Cc: stable@vger.kernel.org # v5.1+
Signed-off-by: Ondrej Mosnacek <omosnace@redhat.com>
Acked-by: Richard Guy Briggs <rgb@redhat.com>
Signed-off-by: Paul Moore <paul@paul-moore.com>
History 2019-06-11 18:35:51 -04:00
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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.