What’s Vulnerable › Vulnerabilities

CVE-2022-50236: iommu/mediatek: Fix crash on isr after kexec()

• Severity: medium (CVSS 5.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2025-09-15 · updated 2026-06-17
• Weakness: CWE-908

Description

In the Linux kernel, the following vulnerability has been resolved: iommu/mediatek: Fix crash on isr after kexec() If the system is rebooted via isr(), the IRQ handler might be triggered before the domain is initialized. Resulting on an invalid memory access error. Fix: [ 0.500930] Unable to handle kernel read from unreadable memory at virtual address 0000000000000070 [ 0.501166] Call trace: [ 0.501174] report_iommu_fault+0x28/0xfc [ 0.501180] mtk_iommu_isr+0x10c/0x1c0 [ joro: Fixed spelling in commit message ]

Affected products

• Linux kernel: from 4.6 before 6.0.17; from 6.1 before 6.1.3 — fixed in 6.0.17, 6.1.3

How to fix

Upgrade to a fixed version: Linux kernel 6.0.17, 6.1.3. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/00ef8885a945c37551547d8ac8361cacd20c4e42
• https://git.kernel.org/stable/c/85cc8a187f2de7a91e2cea522e9406fa12999269
• https://git.kernel.org/stable/c/f13acee780cedb3e06a6dadf64d9104cccd2b9fc

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