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When a new file system object is created and the conditions for label transmutation are met, the SMACK64TRANSMUTE extended attribute is set on the object regardless of its type: file, pipe, socket, symlink, or directory. However, SMACK64TRANSMUTE may only be set on directories. This bug is a combined effect of the commits [1] and [2] which both transfer functionality from smack_d_instantiate() to smack_inode_init_security(), but only in part. Commit [1] set blank SMACK64TRANSMUTE on improper object types. Commit [2] set "TRUE" SMACK64TRANSMUTE on improper object types. [1] 2023-06-10, Fixes:baed456a6a("smack: Set the SMACK64TRANSMUTE xattr in smack_inode_init_security()") Link: https://lore.kernel.org/linux-security-module/20230610075738.3273764-3-roberto.sassu@huaweicloud.com/ [2] 2023-11-16, Fixes:e63d86b8b7("smack: Initialize the in-memory inode in smack_inode_init_security()") Link: https://lore.kernel.org/linux-security-module/20231116090125.187209-5-roberto.sassu@huaweicloud.com/ Signed-off-by: Konstantin Andreev <andreev@swemel.ru> Signed-off-by: Casey Schaufler <casey@schaufler-ca.com>
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.