linux-cve-announce - CVE-2022-50882: media: uvcvideo: Fix memory leak in uvc_gpio

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Message-ID: <2025123025-CVE-2022-50882-6f82@gregkh>
Date: Tue, 30 Dec 2025 13:23:31 +0100
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-cve-announce@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...nel.org>
Subject: CVE-2022-50882: media: uvcvideo: Fix memory leak in uvc_gpio_parse

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

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

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

media: uvcvideo: Fix memory leak in uvc_gpio_parse

Previously the unit buffer was allocated before checking the IRQ for
privacy GPIO. In case of error, the unit buffer was leaked.

Allocate the unit buffer after the IRQ to avoid it.

Addresses-Coverity-ID: 1474639 ("Resource leak")

The Linux kernel CVE team has assigned CVE-2022-50882 to this issue.


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

	Issue introduced in 5.12 with commit 2886477ff98740cc3333cf785e4de0b1ff3d7a28 and fixed in 5.15.75 with commit 6c5da92103bddd1f0c36cb69446ff7cae3043986
	Issue introduced in 5.12 with commit 2886477ff98740cc3333cf785e4de0b1ff3d7a28 and fixed in 5.19.17 with commit deb8f32ae4b10a48c433f2da1b1159521ac24674
	Issue introduced in 5.12 with commit 2886477ff98740cc3333cf785e4de0b1ff3d7a28 and fixed in 6.0.3 with commit 4a7ae8d982a89b3b43b36ec7d62a2e3d06ffa16e
	Issue introduced in 5.12 with commit 2886477ff98740cc3333cf785e4de0b1ff3d7a28 and fixed in 6.1 with commit f0f078457f18f10696888f8d0e6aba9deb9cde92

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-2022-50882
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/media/usb/uvc/uvc_driver.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/6c5da92103bddd1f0c36cb69446ff7cae3043986
	https://git.kernel.org/stable/c/deb8f32ae4b10a48c433f2da1b1159521ac24674
	https://git.kernel.org/stable/c/4a7ae8d982a89b3b43b36ec7d62a2e3d06ffa16e
	https://git.kernel.org/stable/c/f0f078457f18f10696888f8d0e6aba9deb9cde92