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95ffe19420
The intended behavior change for this patch is to reject any MLS strings that contain (trailing) garbage if p->mls_enabled is true. As suggested by Paul Moore, change mls_context_to_sid() so that the two parts of the range are extracted before the rest of the parsing. Because now we don't have to scan for two different separators simultaneously everywhere, we can actually switch to strchr() everywhere instead of the open-coded loops that scan for two separators at once. mls_context_to_sid() used to signal how much of the input string was parsed by updating `*scontext`. However, there is actually no case in which mls_context_to_sid() only parses a subset of the input and still returns a success (other than the buggy case with a second '-' in which it incorrectly claims to have consumed the entire string). Turn `scontext` into a simple pointer argument and stop redundantly checking whether the entire input was consumed in string_to_context_struct(). This also lets us remove the `scontext_len` argument from `string_to_context_struct()`. Signed-off-by: Jann Horn <jannh@google.com> [PM: minor merge fuzz in convert_context()] Signed-off-by: Paul Moore <paul@paul-moore.com> |
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| block | ||
| certs | ||
| crypto | ||
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| drivers | ||
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| fs | ||
| include | ||
| init | ||
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| usr | ||
| virt | ||
| .clang-format | ||
| .cocciconfig | ||
| .get_maintainer.ignore | ||
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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.
See Documentation/00-INDEX for a list of what is contained in each file.
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.