CVE-2026-64133: ALSA: asihpi: Fix potential OOB array access at reading cache

From: Greg Kroah-Hartman <[email protected]>

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

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

ALSA: asihpi: Fix potential OOB array access at reading cache

find_control() to retrieve a cached info accesses the array with the
given index blindly, which may lead to an OOB array access.
Add a sanity check for avoiding it.

The Linux kernel CVE team has assigned CVE-2026-64133 to this issue.


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

	Fixed in 5.10.258 with commit e060e21fe9cca1e5eafd8a1c597026577771e8d9
	Fixed in 5.15.209 with commit 34d0d492a2812b9289af14bca3573a89275965b2
	Fixed in 6.1.175 with commit ffa29cea7bf9a4ef2ea8084967f142e0301ac670
	Fixed in 6.6.142 with commit 7b6f8c8eb93f02a74b1de8e521c0952af10d1f43
	Fixed in 6.12.92 with commit 8778386e4387b28f2bf8425d7ffc667c6294457f
	Fixed in 6.18.34 with commit 61c5017c64e2ac9e10b70b14b17a079dbc0a805f
	Fixed in 7.0.11 with commit 7d107239935793995bdc6cf29bb99e180bde4c28
	Fixed in 7.1 with commit 7b7d6572145c1dab2dd9bfb550b188e5f0ff3c3f

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-2026-64133
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:
	sound/pci/asihpi/hpicmn.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/e060e21fe9cca1e5eafd8a1c597026577771e8d9
	https://git.kernel.org/stable/c/34d0d492a2812b9289af14bca3573a89275965b2
	https://git.kernel.org/stable/c/ffa29cea7bf9a4ef2ea8084967f142e0301ac670
	https://git.kernel.org/stable/c/7b6f8c8eb93f02a74b1de8e521c0952af10d1f43
	https://git.kernel.org/stable/c/8778386e4387b28f2bf8425d7ffc667c6294457f
	https://git.kernel.org/stable/c/61c5017c64e2ac9e10b70b14b17a079dbc0a805f
	https://git.kernel.org/stable/c/7d107239935793995bdc6cf29bb99e180bde4c28
	https://git.kernel.org/stable/c/7b7d6572145c1dab2dd9bfb550b188e5f0ff3c3f