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Sun, 06 Sep 2026 23:28:34 -0700 (PDT) From: Wei Jie Law <98lawweijie@gmail.com> To: Laurent Pinchart , Hans de Goede , Mauro Carvalho Chehab Cc: Guennadi Liakhovetski , linux-media@vger.kernel.org, linux-kernel@vger.kernel.org, stable@vger.kernel.org Subject: [PATCH 0/2] media: uvcvideo: Fix two bugs on the control change event path Date: Mon, 7 Sep 2026 14:28:16 +0800 Message-ID: <20260907062819.2519878-1-98lawweijie@gmail.com> X-Mailer: git-send-email 2.43.0 Precedence: bulk X-Mailing-List: linux-media@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Two bugs on the UVC control change event path, both from e5225c820c05, both in mainline and 6.12.y. 1/2 oopses on an event for an uninitialized XU control. 2/2 leaks heap past the status buffer to userspace. They are independent. 2/2 reports zero for a mapping that does not fit, as the compound case already does. Staging bValue into a zeroed buffer would give a truthful value instead, if you prefer that. 6.12.y needs the same guard around mapping->get(). Wei Jie Law (2): media: uvcvideo: Fix NULL deref on events for uninitialized controls media: uvcvideo: Fix out-of-bounds read in uvc_ctrl_status_event() drivers/media/usb/uvc/uvc_ctrl.c | 20 +++++++++++++++----- 1 file changed, 15 insertions(+), 5 deletions(-) base-commit: a500db7819c50db59e55f1b4fa1c3baa5a2616f3 -- 2.43.0