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Lin Ma b3003e1b54 vdpa: Add queue index attr to vdpa_nl_policy for nlattr length check
The vdpa_nl_policy structure is used to validate the nlattr when parsing
the incoming nlmsg. It will ensure the attribute being described produces
a valid nlattr pointer in info->attrs before entering into each handler
in vdpa_nl_ops.

That is to say, the missing part in vdpa_nl_policy may lead to illegal
nlattr after parsing, which could lead to OOB read just like CVE-2023-3773.

This patch adds the missing nla_policy for vdpa queue index attr to avoid
such bugs.

Fixes: 13b00b1356 ("vdpa: Add support for querying vendor statistics")
Signed-off-by: Lin Ma <linma@zju.edu.cn>
Cc: stable@vger.kernelorg
Message-Id: <20230727175757.73988-5-dtatulea@nvidia.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2023-08-10 15:24:28 -04:00
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drivers vdpa: Add queue index attr to vdpa_nl_policy for nlattr length check 2023-08-10 15:24:28 -04:00
fs v6.5-rc5.vfs.fixes 2023-08-06 10:43:52 -07:00
include v6.5-rc5.vfs.fixes 2023-08-06 10:43:52 -07:00
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MAINTAINERS MAINTAINERS: add vhost-scsi entry and myself as a co-maintainer 2023-08-10 15:24:28 -04:00
Makefile Linux 6.5-rc5 2023-08-06 15:07:51 -07:00
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.

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.