CVE-2026-93166: wifi: rtw89: debug: fix off by on in rtw89_ppdu_str()

CVE-2026-93166: wifi: rtw89: debug: fix off by on in rtw89_ppdu_str()

[Greg Kroah-Hartman]

From: Greg Kroah-Hartman <gregkh@kernel.org>

Description
===========

In the Linux kernel, the following vulnerability has been resolved:

wifi: rtw89: debug: fix off by on in rtw89_ppdu_str()

This > comparison should be >= to avoid an out of bounds access.

The Linux kernel CVE team has assigned CVE-2026-93166 to this issue.


Affected and fixed versions
===========================

	Issue introduced in 7.2 with commit 419ed7f4a0532e6211f1f73b311859500a63e141 and fixed in 7.2.6 with commit 876b110114da39cfcf07cd35e2e6213ef6982e4b
	Issue introduced in 7.2 with commit 419ed7f4a0532e6211f1f73b311859500a63e141 and fixed in 7.3-rc1 with commit 1908534deb53a018580309be84a4f7dcc9cb1af3

Please see https://www.kernel.org for a full list of currently supported
kernel versions by the kernel community.

Unaffected versions might change over time as fixes are backported to
older supported kernel versions.  The official CVE entry at
	https://cve.org/CVERecord/?id=CVE-2026-93166
will be updated if fixes are backported, please check that for the most
up to date information about this issue.


Affected files
==============

The file(s) affected by this issue are:
	drivers/net/wireless/realtek/rtw89/debug.c


Mitigation
==========

The Linux kernel CVE team recommends that you update to the latest
stable kernel version for this, and many other bugfixes.  Individual
changes are never tested alone, but rather are part of a larger kernel
release.  Cherry-picking individual commits is not recommended or
supported by the Linux kernel community at all.  If however, updating to
the latest release is impossible, the individual changes to resolve this
issue can be found at these commits:
	https://git.kernel.org/stable/c/876b110114da39cfcf07cd35e2e6213ef6982e4b
	https://git.kernel.org/stable/c/1908534deb53a018580309be84a4f7dcc9cb1af3