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[ Upstream commit 12427de9439d68b8e96ba6f50b601ef15f437612 ] Sysbot reports a slab out of bounds write in squashfs_readahead(). This is ultimately caused by a file reporting an (infeasibly) large file size (1407374883553280 bytes) with the minimum block size of 4K. This causes variable overflow. Link: https://lkml.kernel.org/r/20231113160901.6444-1-phillip@squashfs.org.uk Signed-off-by: Phillip Lougher <phillip@squashfs.org.uk> Reported-by: syzbot+604424eb051c2f696163@syzkaller.appspotmail.com Closes: https://lore.kernel.org/all/000000000000b1fda20609ede0d1@google.com/ Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Sasha Levin <sashal@kernel.org>
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.