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Jiawei Ye bff1709b39 mac802154: Fix potential RCU dereference issue in mac802154_scan_worker 
In the `mac802154_scan_worker` function, the `scan_req->type` field was
accessed after the RCU read-side critical section was unlocked. According
to RCU usage rules, this is illegal and can lead to unpredictable
behavior, such as accessing memory that has been updated or causing
use-after-free issues.

This possible bug was identified using a static analysis tool developed
by myself, specifically designed to detect RCU-related issues.

To address this, the `scan_req->type` value is now stored in a local
variable `scan_req_type` while still within the RCU read-side critical
section. The `scan_req_type` is then used after the RCU lock is released,
ensuring that the type value is safely accessed without violating RCU
rules.

Fixes: e2c3e6f53a ("mac802154: Handle active scanning")
Cc: stable@vger.kernel.org
Signed-off-by: Jiawei Ye <jiawei.ye@foxmail.com>
Acked-by: Miquel Raynal <miquel.raynal@bootlin.com>
Reviewed-by: Przemek Kitszel <przemyslaw.kitszel@intel.com>
Link: https://lore.kernel.org/tencent_3B2F4F2B4DA30FAE2F51A9634A16B3AD4908@qq.com
Signed-off-by: Stefan Schmidt <stefan@datenfreihafen.org>
2024-09-24 11:53:50 +02:00
arch Probes updates for v6.10: 2024-05-17 18:29:30 -07:00
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Documentation Including fix from Andrii for the issue mentioned in our net-next PR, 2024-05-17 18:57:14 -07:00
drivers ieee802154: Fix build error 2024-09-09 21:26:17 +02:00
fs tracing cleanups for v6.10: 2024-05-17 18:34:27 -07:00
include tracing ring buffer updates for v6.10: 2024-05-17 18:40:37 -07:00
init Bootconfig updates for v6.10: 2024-05-17 18:23:55 -07:00
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kernel kprobe/ftrace: fix build error due to bad function definition 2024-05-17 19:17:55 -07:00
lib Probes updates for v6.10: 2024-05-17 18:29:30 -07:00
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net mac802154: Fix potential RCU dereference issue in mac802154_scan_worker 2024-09-24 11:53:50 +02:00
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tools Including fix from Andrii for the issue mentioned in our net-next PR, 2024-05-17 18:57:14 -07:00
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MAINTAINERS Including fix from Andrii for the issue mentioned in our net-next PR, 2024-05-17 18:57:14 -07:00
Makefile
README

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 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.