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

What is CVE-2022-50236?

CVE-2022-50236 is a medium-severity vulnerability in Linux kernel, published on 15 Sep 2025. It can only be exploited from the same machine or local network, with no action from the victim.

Official 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 ]

Weakness: CWE-908

Which versions are affected by CVE-2022-50236?

It affects 1 product.

Products include Linux kernel.

How do I fix CVE-2022-50236?

Apply the vendor's patch.

Is CVE-2022-50236 being exploited?

There is no known exploitation of CVE-2022-50236 in the wild and no public exploit code.

Other vulnerabilities in Linux kernel

• CVE-2026-53266 Linux Kernel Out-of-Bounds Write Exploited High 8.8
• CVE-2013-6282 Linux Kernel Improper Input Validation Exploited High 8.8
• CVE-2022-0185 Linux Kernel Heap-Based Buffer Overflow Exploited High 8.4
• CVE-2013-2094 Linux Kernel Privilege Escalation Exploited High 8.4
• CVE-2026-53362 Linux Kernel Unspecified Exploited High 7.8

All Linux kernel vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as DEBIAN-CVE-2022-50236, GHSA-mj99-x9w6-h3m8, ROOT-OS-DEBIAN-11-CVE-2022-50236, ROOT-OS-UBUNTU-2204-CVE-2022-50236, UBUNTU-CVE-2022-50236.