linux-cve-announce - CVE-2025-38367: LoongArch: KVM: Avoid overflow with array index

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Message-ID: <2025072558-CVE-2025-38367-df91@gregkh>
Date: Fri, 25 Jul 2025 14:48:08 +0200
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-cve-announce@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...nel.org>
Subject: CVE-2025-38367: LoongArch: KVM: Avoid overflow with array index

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

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

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

LoongArch: KVM: Avoid overflow with array index

The variable index is modified and reused as array index when modify
register EIOINTC_ENABLE. There will be array index overflow problem.

The Linux kernel CVE team has assigned CVE-2025-38367 to this issue.


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

	Issue introduced in 6.13 with commit 3956a52bc05bd811082a3c9d2b423ee957e6fefc and fixed in 6.15.5 with commit 2cc84c4b0d70d42e291862ecc848890d18e1004a
	Issue introduced in 6.13 with commit 3956a52bc05bd811082a3c9d2b423ee957e6fefc and fixed in 6.16-rc4 with commit 080e8d2ecdfde588897aa8a87a8884061f4dbbbb

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-2025-38367
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:
	arch/loongarch/kvm/intc/eiointc.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/2cc84c4b0d70d42e291862ecc848890d18e1004a
	https://git.kernel.org/stable/c/080e8d2ecdfde588897aa8a87a8884061f4dbbbb