linux-cve-announce - CVE-2025-37762: drm/virtio: Fix missed dmabuf unpinning in error path of prepare

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Message-ID: <2025050110-CVE-2025-37762-c48f@gregkh>
Date: Thu,  1 May 2025 15:07:10 +0200
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-cve-announce@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...nel.org>
Subject: CVE-2025-37762: drm/virtio: Fix missed dmabuf unpinning in error path of prepare_fb()

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

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

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

drm/virtio: Fix missed dmabuf unpinning in error path of prepare_fb()

Correct error handling in prepare_fb() to fix leaking resources when
error happens.

The Linux kernel CVE team has assigned CVE-2025-37762 to this issue.


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

	Issue introduced in 6.14 with commit 4a696a2ee646ea6f24c28b3624175a7b35482c52 and fixed in 6.14.4 with commit fe983e925bf7062d7b975357afcbc77bb7f354d8
	Issue introduced in 6.14 with commit 4a696a2ee646ea6f24c28b3624175a7b35482c52 and fixed in 6.15-rc2 with commit 395cc80051f8da267b27496a4029dd931a198855

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-2025-37762
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/gpu/drm/virtio/virtgpu_plane.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/fe983e925bf7062d7b975357afcbc77bb7f354d8
	https://git.kernel.org/stable/c/395cc80051f8da267b27496a4029dd931a198855