From: "Maxime Ripard" <mripard@kernel.org>
To: "Romain Gantois" <romain.gantois@bootlin.com>
Cc: dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org,
stable@vger.kernel.org, "David Airlie" <airlied@gmail.com>,
"Jason Xiang" <jx@jasonxiang.net>,
"Maarten Lankhorst" <maarten.lankhorst@linux.intel.com>,
"Maxime Ripard" <mripard@kernel.org>,
"Paul Kocialkowski" <paul.kocialkowski@bootlin.com>,
"Paul Kocialkowski" <paulk@sys-base.io>,
"Simona Vetter" <simona@ffwll.ch>,
"Thomas Petazzoni" <thomas.petazzoni@bootlin.com>,
"Thomas Zimmermann" <tzimmermann@suse.de>
Subject: Re: [PATCH v2 1/2] drm/logicvc: Avoid use-after-free with devm_kzalloc()
Date: Tue, 30 Jun 2026 12:37:53 +0000 [thread overview]
Message-ID: <b10ed22795de18c499f444e3ce8f3756@kernel.org> (raw)
In-Reply-To: <20260630-logicvc-uaf-v2-1-99e881833860@bootlin.com>
On Tue, 30 Jun 2026 11:10:10 +0200, Romain Gantois wrote:
> The logicvc driver calls drm_universal_plane_init(),
> drm_crtc_init_with_planes(), and drm_encoder_alloc(). These functions
> should not be called with structs allocated with devm_kzalloc(), as this
> can lead to use-after-free bugs. In fact, a use-after-free caused by this
> has been observed on a v6.6 kernel.
>
> [ ... ]
Reviewed-by: Maxime Ripard <mripard@kernel.org>
Thanks!
Maxime
next prev parent reply other threads:[~2026-06-30 12:37 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-06-30 9:10 [PATCH v2 0/2] drm/logicvc: Avoid UAF in DRM object management Romain Gantois
2026-06-30 9:10 ` [PATCH v2 1/2] drm/logicvc: Avoid use-after-free with devm_kzalloc() Romain Gantois
2026-06-30 12:37 ` Maxime Ripard [this message]
2026-06-30 9:10 ` [PATCH v2 2/2] drm/logicvc: Avoid using DRM resources after device is unplugged Romain Gantois
2026-06-30 12:44 ` Maxime Ripard
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