CVE-2022-49427

MediumCVSS 5.5/10Last modified Jun 17, 2026

Description

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

Metrics

CVSS 3.1 5.5/10CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Affected software

VendorProductVersions
LinuxLinux>= b34ea31fe013569d42b7e8681ef3f717f77c5b72, < 053465ab20dcd324a43a1811ee98e5721e6a3e65; >= b34ea31fe013569d42b7e8681ef3f717f77c5b72, < 9b3bd97acb4f8954b8a43a5d63ed9050d463b4e1; >= b34ea31fe013569d42b7e8681ef3f717f77c5b72, < 6eaa046c696c83542c56765cdde564d9818ff1fb; >= b34ea31fe013569d42b7e8681ef3f717f77c5b72, < 98df772bdd1c4ce717a26289efea15cbbe4b64ed; 5cad9e2caa9613fdcd246bd4ebf0ffbec1cba2ca; >= 5.12.4, < 5.13
LinuxLinux5.13

References

Timeline

Published
Feb 26, 2025
Last modified
Jun 17, 2026
NVD status
Analyzed

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CVE-2022-49427: Medium severity, CVSS 5.5 | Vulnix