CVE-2022-49427

published 2025-02-26

CVE-2022-49427: In the Linux kernel, the following vulnerability has been resolved: iommu/mediatek: Remove clk_disable in mtk_iommu_remove After the commit b34ea31fe013…

Priority P4 19 medium 5.5 CVSS 3.1

AV L AC L PR L UI N S U C N I N A H

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

iommu/mediatek: Remove clk_disable in mtk_iommu_remove

After the commit b34ea31fe013 ("iommu/mediatek: Always enable the clk on
resume"), the iommu clock is controlled by the runtime callback.
thus remove the clk control in the mtk_iommu_remove.

Otherwise, it will warning like:

echo 14018000.iommu > /sys/bus/platform/drivers/mtk-iommu/unbind

[ 51.413044] ------------[ cut here ]------------
[ 51.413648] vpp0_smi_iommu already disabled
[ 51.414233] WARNING: CPU: 2 PID: 157 at */v5.15-rc1/kernel/mediatek/
drivers/clk/clk.c:952 clk_core_disable+0xb0/0xb8
[ 51.417174] Hardware name: MT8195V/C(ENG) (DT)
[ 51.418635] pc : clk_core_disable+0xb0/0xb8
[ 51.419177] lr : clk_core_disable+0xb0/0xb8
...
[ 51.429375] Call trace:
[ 51.429694] clk_core_disable+0xb0/0xb8
[ 51.430193] clk_core_disable_lock+0x24/0x40
[ 51.430745] clk_disable+0x20/0x30
[ 51.431189] mtk_iommu_remove+0x58/0x118
[ 51.431705] platform_remove+0x28/0x60
[ 51.432197] device_release_driver_internal+0x110/0x1f0
[ 51.432873] device_driver_detach+0x18/0x28
[ 51.433418] unbind_store+0xd4/0x108
[ 51.433886] drv_attr_store+0x24/0x38
[ 51.434363] sysfs_kf_write+0x40/0x58
[ 51.434843] kernfs_fop_write_iter+0x164/0x1e0

Affected

14 ranges

Vendor	Product	Version range	Fixed in
debian	linux	< linux 5.18.5-1 (bookworm)	linux 5.18.5-1 (bookworm)
linux	linux	—	—
linux	linux	—	—
linux	linux	>= 5.12.4 < 5.13	5.13
linux	linux	>= b34ea31fe013569d42b7e8681ef3f717f77c5b72 < 053465ab20dcd324a43a1811ee98e5721e6a3e65	053465ab20dcd324a43a1811ee98e5721e6a3e65
linux	linux	>= b34ea31fe013569d42b7e8681ef3f717f77c5b72 < 9b3bd97acb4f8954b8a43a5d63ed9050d463b4e1	9b3bd97acb4f8954b8a43a5d63ed9050d463b4e1
linux	linux	>= b34ea31fe013569d42b7e8681ef3f717f77c5b72 < 6eaa046c696c83542c56765cdde564d9818ff1fb	6eaa046c696c83542c56765cdde564d9818ff1fb
linux	linux	>= b34ea31fe013569d42b7e8681ef3f717f77c5b72 < 98df772bdd1c4ce717a26289efea15cbbe4b64ed	98df772bdd1c4ce717a26289efea15cbbe4b64ed
linux	linux_kernel	>= 0 < 5.18.5-1	5.18.5-1
linux	linux_kernel	>= 0 < 5.18.5-1	5.18.5-1
linux	linux_kernel	>= 0 < 5.18.5-1	5.18.5-1
linux	linux_kernel	>= 5.12.4 < 5.15.46	5.15.46
linux	linux_kernel	>= 5.16 < 5.17.14	5.17.14
linux	linux_kernel	>= 5.18 < 5.18.3	5.18.3

CVSS provenance

nvd v3.1 5.5 MEDIUM CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

osv 5.5 MEDIUM

vendor_debian 5.5 MEDIUM

vendor_redhat 5.5 MEDIUM

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