linux-cve-announce - CVE-2026-23028: LoongArch: KVM: Fix kvm_device leak in kvm_ipi

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [day] [month] [year] [list]

Message-ID: <2026013120-CVE-2026-23028-4942@gregkh>
Date: Sat, 31 Jan 2026 12:44:28 +0100
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-cve-announce@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...nel.org>
Subject: CVE-2026-23028: LoongArch: KVM: Fix kvm_device leak in kvm_ipi_destroy()

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

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

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

LoongArch: KVM: Fix kvm_device leak in kvm_ipi_destroy()

In kvm_ioctl_create_device(), kvm_device has allocated memory,
kvm_device->destroy() seems to be supposed to free its kvm_device
struct, but kvm_ipi_destroy() is not currently doing this, that
would lead to a memory leak.

So, fix it.

The Linux kernel CVE team has assigned CVE-2026-23028 to this issue.


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

	Fixed in 6.18.7 with commit 5defcc2f9c22e6e09b5be68234ad10f4ba0292b7
	Fixed in 6.19-rc6 with commit 0bf58cb7288a4d3de6d8ecbb3a65928a9362bf21

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-2026-23028
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/ipi.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/5defcc2f9c22e6e09b5be68234ad10f4ba0292b7
	https://git.kernel.org/stable/c/0bf58cb7288a4d3de6d8ecbb3a65928a9362bf21