iommu/mediatek: Fix NULL pointer deference in mtk_iommu_device_group
3Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackepss 0.2%
exploitation probability
0.2%top 94% of all CVEs
observed exploitation
nono source reports it
In the Linux kernel, the following vulnerability has been resolved:
iommu/mediatek: Fix NULL pointer deference in mtk_iommu_device_group
Currently, mtk_iommu calls during probe iommu_device_register before
the hw_list from driver data is initialized. Since iommu probing issue
fix, it leads to NULL pointer dereference in mtk_iommu_device_group when
hw_list is accessed with list_first_entry (not null safe).
So, change the call order to ensure iommu_device_register is called
after the driver data are initialized.
Affected products
Linux · LinuxReferences
https://git.kernel.org/stable/c/2f75cb27bef43c8692b0f5e471e5632f6a9beb99https://git.kernel.org/stable/c/38e8844005e6068f336a3ad45451a562a0040ca1https://git.kernel.org/stable/c/69f9d2d37d1207c5a73dac52a4ce1361ead707f5https://git.kernel.org/stable/c/6abd09bed43b8d83d461e0fb5b9a200a06aa8a27https://git.kernel.org/stable/c/a0842539e8ef9386c070156103aff888e558a60chttps://git.kernel.org/stable/c/ce7d3b2f6f393fa35f0ea12861b83a1ca28b295chttps://lists.debian.org/debian-lts-announce/2025/05/msg00045.html