CVE-2022-49427

iommu/mediatek: Remove clk_disable in mtk_iommu_remove

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

N/A
CVSS
Severity:
EPSS 0.03%
Affected: Linux Linux
Affected: Linux Linux
Published at:
Updated at:

References

Link Tags
https://git.kernel.org/stable/c/053465ab20dcd324a43a1811ee98e5721e6a3e65
https://git.kernel.org/stable/c/9b3bd97acb4f8954b8a43a5d63ed9050d463b4e1
https://git.kernel.org/stable/c/6eaa046c696c83542c56765cdde564d9818ff1fb
https://git.kernel.org/stable/c/98df772bdd1c4ce717a26289efea15cbbe4b64ed

Frequently Asked Questions

What is the severity of CVE-2022-49427?
CVE-2022-49427 has not yet been assigned a CVSS score.
How to fix CVE-2022-49427?
To fix CVE-2022-49427, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2022-49427 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2022-49427 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2022-49427?
CVE-2022-49427 affects Linux Linux, Linux Linux.
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