linux-cve-announce - CVE-2025-68812: media: iris: Add sanity check for stop streaming

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Message-ID: <2026011312-CVE-2025-68812-4098@gregkh>
Date: Tue, 13 Jan 2026 16:29:38 +0100
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-cve-announce@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...nel.org>
Subject: CVE-2025-68812: media: iris: Add sanity check for stop streaming

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

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

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

media: iris: Add sanity check for stop streaming

Add sanity check in iris_vb2_stop_streaming. If inst->state is
already IRIS_INST_ERROR, we should skip the stream_off operation
because it would still send packets to the firmware.

In iris_kill_session, inst->state is set to IRIS_INST_ERROR and
session_close is executed, which will kfree(inst_hfi_gen2->packet).
If stop_streaming is called afterward, it will cause a crash.

[bod: remove qcom from patch title]

The Linux kernel CVE team has assigned CVE-2025-68812 to this issue.


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

	Issue introduced in 6.15 with commit 11712ce70f8e52fc94365b48ee15aec806b02422 and fixed in 6.18.3 with commit f8b136296722e258ec43237a35f72c92a6d4501a
	Issue introduced in 6.15 with commit 11712ce70f8e52fc94365b48ee15aec806b02422 and fixed in 6.19-rc1 with commit ad699fa78b59241c9d71a8cafb51525f3dab04d4

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-2025-68812
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/platform/qcom/iris/iris_vb2.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/f8b136296722e258ec43237a35f72c92a6d4501a
	https://git.kernel.org/stable/c/ad699fa78b59241c9d71a8cafb51525f3dab04d4