staging: rtl8723bs: fix OOB read in rtw_action_frame_parse()grafted

rtw_action_frame_parse() takes a frame_len parameter but never
actually checks it before indexing into the frame body:

	const u8 *frame_body = frame + sizeof(struct ieee80211_hdr_3addr);
	...
	c = frame_body[0];
	...
	a = frame_body[1];

frame_body already points 24 bytes (sizeof(struct
ieee80211_hdr_3addr)) into frame, so reading frame_body[0] and
frame_body[1] requires frame_len >= 26. A management action frame
shorter than that (e.g. exactly 24 bytes, the minimum a malicious
peer can send) causes a 1-2 byte out-of-bounds read.

This is reachable from rtw_cfg80211_monitor_if_xmit_entry() and
cfg80211_rtw_mgmt_tx() in ioctl_cfg80211.c, both of which pass
attacker/user-influenced frame buffers and lengths straight through.

Add the missing length check before frame_body is dereferenced.

Fixes: 554c0a3abf216 ("staging: Add rtl8723bs sdio wifi driver")
Cc: stable@vger.kernel.org
Signed-off-by: Muhammad Bilal <meatuni001@gmail.com>
Link: https://patch.msgid.link/20260728125456.32359-3-meatuni001@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

1 files changed, 54 insertions, 0 deletions

diff --git a/Documentation/doc-guide/checktransupdate.rst b/Documentation/doc-guide/checktransupdate.rst
new file mode 100644
index 000000000..7b25375cc
--- /dev/null
+++ b/Documentation/doc-guide/checktransupdate.rst
@@ -0,0 +1,54 @@
+.. SPDX-License-Identifier: GPL-2.0
+
+Checking for needed translation updates
+=======================================
+
+This script helps track the translation status of the documentation in
+different locales, i.e., whether the documentation is up-to-date with
+the English counterpart.
+
+How it works
+------------
+
+It uses ``git log`` command to track the latest English commit from the
+translation commit (order by author date) and the latest English commits
+from HEAD. If any differences occur, the file is considered as out-of-date,
+then commits that need to be updated will be collected and reported.
+
+Features implemented
+
+-  check all files in a certain locale
+-  check a single file or a set of files
+-  provide options to change output format
+-  track the translation status of files that have no translation
+
+Usage
+-----
+
+::
+
+   tools/docs/checktransupdate.py --help
+
+Please refer to the output of argument parser for usage details.
+
+Samples
+
+-  ``tools/docs/checktransupdate.py -l zh_CN``
+   This will print all the files that need to be updated in the zh_CN locale.
+-  ``tools/docs/checktransupdate.py Documentation/translations/zh_CN/dev-tools/testing-overview.rst``
+   This will only print the status of the specified file.
+
+Then the output is something like:
+
+::
+
+    Documentation/dev-tools/kfence.rst
+    No translation in the locale of zh_CN
+
+    Documentation/translations/zh_CN/dev-tools/testing-overview.rst
+    commit 42fb9cfd5b18 ("Documentation: dev-tools: Add link to RV docs")
+    1 commits needs resolving in total
+
+Features to be implemented
+
+- files can be a folder instead of only a file