mirror of
https://github.com/hardkernel/linux.git
synced 2026-06-05 02:21:52 +09:00
7400fa1729
Commiteca0025faa("block, bfq: split sync bfq_queues on a per-actuator basis"), which is a backport of9778369a2d("block, bfq: split sync bfq_queues on a per-actuator basis") re-introduces UAF bug originally fixed byb600de2d7d("block, bfq: fix uaf for bfqq in bic_set_bfqq()") and backported to 6.1 incb1876fc33("block, bfq: fix uaf for bfqq in bic_set_bfqq()"). bfq_release_process_ref() may release the sync_bfqq variable, which points to the same bfqq as bic->bfqq member for call context from __bfq_bic_change_cgroup(). bic_set_bfqq() then accesses bic->bfqq member which leads to the UAF condition. Fix this by bringing the incriminated function calls back in correct order. Fixes:eca0025faa("block, bfq: split sync bfq_queues on a per-actuator basis") Signed-off-by: Jakub Acs <acsjakub@amazon.de> Cc: Hagar Hemdan <hagarhem@amazon.com> Cc: stable@vger.kernel.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.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.