linux-cve-announce - CVE-2025-71136: media: adv7842: Avoid possible out-of-bounds array accesses in adv7842_cp_log

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Message-ID: <2026011454-CVE-2025-71136-0f59@gregkh>
Date: Wed, 14 Jan 2026 16:08:00 +0100
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-cve-announce@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...nel.org>
Subject: CVE-2025-71136: media: adv7842: Avoid possible out-of-bounds array accesses in adv7842_cp_log_status()

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

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

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

media: adv7842: Avoid possible out-of-bounds array accesses in adv7842_cp_log_status()

It's possible for cp_read() and hdmi_read() to return -EIO. Those
values are further used as indexes for accessing arrays.

Fix that by checking return values where it's needed.

Found by Linux Verification Center (linuxtesting.org) with SVACE.

The Linux kernel CVE team has assigned CVE-2025-71136 to this issue.


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

	Issue introduced in 3.12 with commit a89bcd4c6c2023615a89001b5a11b0bb77eb9491 and fixed in 6.1.160 with commit d6a22a4a96e4dfe6897cb3532d2b3016d87706f0
	Issue introduced in 3.12 with commit a89bcd4c6c2023615a89001b5a11b0bb77eb9491 and fixed in 6.6.120 with commit a73881ae085db5702d8b13e2fc9f78d51c723d3f
	Issue introduced in 3.12 with commit a89bcd4c6c2023615a89001b5a11b0bb77eb9491 and fixed in 6.12.64 with commit 60dde0960e3ead8a9569f6c494d90d0232ac0983
	Issue introduced in 3.12 with commit a89bcd4c6c2023615a89001b5a11b0bb77eb9491 and fixed in 6.18.4 with commit b693d48a6ed0cd09171103ad418e4a693203d6e4
	Issue introduced in 3.12 with commit a89bcd4c6c2023615a89001b5a11b0bb77eb9491 and fixed in 6.19-rc1 with commit 8163419e3e05d71dcfa8fb49c8fdf8d76908fe51

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-2025-71136
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/i2c/adv7842.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/d6a22a4a96e4dfe6897cb3532d2b3016d87706f0
	https://git.kernel.org/stable/c/a73881ae085db5702d8b13e2fc9f78d51c723d3f
	https://git.kernel.org/stable/c/60dde0960e3ead8a9569f6c494d90d0232ac0983
	https://git.kernel.org/stable/c/b693d48a6ed0cd09171103ad418e4a693203d6e4
	https://git.kernel.org/stable/c/8163419e3e05d71dcfa8fb49c8fdf8d76908fe51