linux-cve-announce - CVE-2022-50175: media: tw686x: Fix memory leak in tw686x_video

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Message-ID: <2025061830-CVE-2022-50175-e5b5@gregkh>
Date: Wed, 18 Jun 2025 13:04:00 +0200
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-cve-announce@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...nel.org>
Subject: CVE-2022-50175: media: tw686x: Fix memory leak in tw686x_video_init

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

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

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

media: tw686x: Fix memory leak in tw686x_video_init

video_device_alloc() allocates memory for vdev,
when video_register_device() fails, it doesn't release the memory and
leads to memory leak, call video_device_release() to fix this.

The Linux kernel CVE team has assigned CVE-2022-50175 to this issue.


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

	Issue introduced in 4.7 with commit 704a84ccdbf19fdce9adfda0b936dfdcac52fa49 and fixed in 5.10.137 with commit 611f86965df013d6021e6cd0d155b1734ad2cf21
	Issue introduced in 4.7 with commit 704a84ccdbf19fdce9adfda0b936dfdcac52fa49 and fixed in 5.15.61 with commit 0597bcf774896a002edcc7934a9cdbb932b66702
	Issue introduced in 4.7 with commit 704a84ccdbf19fdce9adfda0b936dfdcac52fa49 and fixed in 5.18.18 with commit c142a7531b90c6b0f946c82d3f504b3f36a207df
	Issue introduced in 4.7 with commit 704a84ccdbf19fdce9adfda0b936dfdcac52fa49 and fixed in 5.19.2 with commit 8b412db51db24dfba22c96948580d4a12f831397
	Issue introduced in 4.7 with commit 704a84ccdbf19fdce9adfda0b936dfdcac52fa49 and fixed in 6.0 with commit e0b212ec9d8177d6f7c404315293f6a085d6ee42

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-2022-50175
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/pci/tw686x/tw686x-video.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/611f86965df013d6021e6cd0d155b1734ad2cf21
	https://git.kernel.org/stable/c/0597bcf774896a002edcc7934a9cdbb932b66702
	https://git.kernel.org/stable/c/c142a7531b90c6b0f946c82d3f504b3f36a207df
	https://git.kernel.org/stable/c/8b412db51db24dfba22c96948580d4a12f831397
	https://git.kernel.org/stable/c/e0b212ec9d8177d6f7c404315293f6a085d6ee42