CVE-2026-93063: wifi: iwlwifi: mei: check SAP message length before reading it

CVE-2026-93063: wifi: iwlwifi: mei: check SAP message length before reading it

[Greg Kroah-Hartman]

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

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

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

wifi: iwlwifi: mei: check SAP message length before reading it

Verify the SAP message size is not larger than the local buffer before
reading the message to avoid buffer overflow.

The Linux kernel CVE team has assigned CVE-2026-93063 to this issue.


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

	Issue introduced in 6.1.2 with commit a29e442ee110aafdf7785fac6de44b22d3da43db and fixed in 6.1.188 with commit a4034f1cc8a422cefc519290d8e6cfb7ff773586
	Issue introduced in 6.2 with commit bcd68b3dbe78b7b0f7b6b55162cf1eff1e7fff9e and fixed in 6.6.157 with commit b90ebae632318dc2e5cd4ac96e454ec50f705579
	Issue introduced in 6.2 with commit bcd68b3dbe78b7b0f7b6b55162cf1eff1e7fff9e and fixed in 6.12.110 with commit 9c6bea89a16815688a5240dd4a74c922a92fcdc3
	Issue introduced in 6.2 with commit bcd68b3dbe78b7b0f7b6b55162cf1eff1e7fff9e and fixed in 6.18.52 with commit 242125bbf19a2974d22f3d5025c9c14c0a4aea58
	Issue introduced in 6.2 with commit bcd68b3dbe78b7b0f7b6b55162cf1eff1e7fff9e and fixed in 7.2.6 with commit f7f770d12e6e928006f89a59291074e5fea82886
	Issue introduced in 6.2 with commit bcd68b3dbe78b7b0f7b6b55162cf1eff1e7fff9e and fixed in 7.3-rc1 with commit 7d8cc301bcba233f31b589a45f4c1c97f2bb90d6
	Issue introduced in 6.0.16 with commit 9f71cebcac2148e68d0d67f113d0f9aabfcc7a2a

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-2026-93063
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/intel/iwlwifi/mei/main.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/a4034f1cc8a422cefc519290d8e6cfb7ff773586
	https://git.kernel.org/stable/c/b90ebae632318dc2e5cd4ac96e454ec50f705579
	https://git.kernel.org/stable/c/9c6bea89a16815688a5240dd4a74c922a92fcdc3
	https://git.kernel.org/stable/c/242125bbf19a2974d22f3d5025c9c14c0a4aea58
	https://git.kernel.org/stable/c/f7f770d12e6e928006f89a59291074e5fea82886
	https://git.kernel.org/stable/c/7d8cc301bcba233f31b589a45f4c1c97f2bb90d6