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c4c0d19d39
To prevent memory out-of-bounds accessing in ubifs_dump_node(), actual dumping length should be restricted by another condition(size of memory which is allocated for the node). This patch handles following situations (These situations may be caused by bit flipping due to hardware error, writing bypass ubifs, unknown bugs in ubifs, etc.): 1. bad node_len: Dumping data according to 'ch->len' which may exceed the size of memory allocated for node. 2. bad node content: Some kinds of node can record additional data, eg. index node and orphan node, make sure the size of additional data not beyond the node length. 3. node_type changes: Read data according to type A, but expected type B, before that, node is allocated according to type B's size. Length of type A node is greater than type B node. Signed-off-by: Zhihao Cheng <chengzhihao1@huawei.com> Signed-off-by: Richard Weinberger <richard@nod.at> |
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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.