linux-cve-announce - CVE-2023-53812: media: mediatek: vcodec: fix decoder disable pm crash

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Message-ID: <2025120944-CVE-2023-53812-a186@gregkh>
Date: Tue,  9 Dec 2025 09:02:33 +0900
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-cve-announce@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...nel.org>
Subject: CVE-2023-53812: media: mediatek: vcodec: fix decoder disable pm crash

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

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

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

media: mediatek: vcodec: fix decoder disable pm crash

Can't call pm_runtime_disable when the architecture support sub device for
'dev->pm.dev' is NUll, or will get below crash log.

[   10.771551] pc : _raw_spin_lock_irq+0x4c/0xa0
[   10.771556] lr : __pm_runtime_disable+0x30/0x130
[   10.771558] sp : ffffffc01e4cb800
[   10.771559] x29: ffffffc01e4cb800 x28: ffffffdf082108a8
[   10.771563] x27: ffffffc01e4cbd70 x26: ffffff8605df55f0
[   10.771567] x25: 0000000000000002 x24: 0000000000000002
[   10.771570] x23: ffffff85c0dc9c00 x22: 0000000000000001
[   10.771573] x21: 0000000000000001 x20: 0000000000000000
[   10.771577] x19: 00000000000000f4 x18: ffffffdf2e9fbe18
[   10.771580] x17: 0000000000000000 x16: ffffffdf2df13c74
[   10.771583] x15: 00000000000002ea x14: 0000000000000058
[   10.771587] x13: ffffffdf2de1b62c x12: ffffffdf2e9e30e4
[   10.771590] x11: 0000000000000000 x10: 0000000000000001
[   10.771593] x9 : 0000000000000000 x8 : 00000000000000f4
[   10.771596] x7 : 6bff6264632c6264 x6 : 0000000000008000
[   10.771600] x5 : 0080000000000000 x4 : 0000000000000001
[   10.771603] x3 : 0000000000000008 x2 : 0000000000000001
[   10.771608] x1 : 0000000000000000 x0 : 00000000000000f4
[   10.771613] Call trace:
[   10.771617]  _raw_spin_lock_irq+0x4c/0xa0
[   10.771620]  __pm_runtime_disable+0x30/0x130
[   10.771657]  mtk_vcodec_probe+0x69c/0x728 [mtk_vcodec_dec 800cc929d6631f79f9b273254c8db94d0d3500dc]
[   10.771662]  platform_drv_probe+0x9c/0xbc
[   10.771665]  really_probe+0x13c/0x3a0
[   10.771668]  driver_probe_device+0x84/0xc0
[   10.771671]  device_driver_attach+0x54/0x78

The Linux kernel CVE team has assigned CVE-2023-53812 to this issue.


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

	Issue introduced in 5.18 with commit ba31a5b39400a7b500b3f022a351218b179038dc and fixed in 6.1.28 with commit c692a44bc5146eb487f40798a1ea8dd57fd2607d
	Issue introduced in 5.18 with commit ba31a5b39400a7b500b3f022a351218b179038dc and fixed in 6.2.15 with commit 03e9773388a27242e6139f3d5b5fd00112adb5c3
	Issue introduced in 5.18 with commit ba31a5b39400a7b500b3f022a351218b179038dc and fixed in 6.3.2 with commit 34fe290090ecfcf405cad9d0e0ddc8b8246ffaa2
	Issue introduced in 5.18 with commit ba31a5b39400a7b500b3f022a351218b179038dc and fixed in 6.4 with commit 9d2f13fb47dcab6d094f34ecfd6a879a409722b3

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-2023-53812
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/mediatek/vcodec/mtk_vcodec_dec_drv.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/c692a44bc5146eb487f40798a1ea8dd57fd2607d
	https://git.kernel.org/stable/c/03e9773388a27242e6139f3d5b5fd00112adb5c3
	https://git.kernel.org/stable/c/34fe290090ecfcf405cad9d0e0ddc8b8246ffaa2
	https://git.kernel.org/stable/c/9d2f13fb47dcab6d094f34ecfd6a879a409722b3