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

Quick assessment

Affected
Linux Linux
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Linux kernel是美国等都是美国(Linux)基金会的产品。Linux kernel是开源操作系统Linux所使用的内核。Symfony ux等都是(Symfony)开源的产品。ux是一个Symfony的JavaScript生态系统。R infrastructure gh等都是(R infrastructure)开源的产品。gh是一个GitHub的API库。 Linux kernel存在安全漏洞，该漏洞源于iommu/mediatek组件在kexec后未正确初始化域，可能导致无效内存访问错误。

AI Predicted 5.5 Difficulty: Theoretical EPSS 0.16% · P5

Possible ATT&CK Techniques 1 AI

T1499 · Endpoint Denial of Service

Affected Version Matrix 8

VendorProduct Version RangeStatus
Linux Linux 0df4fabe208d9576f2671d31e77cf46d20fdcd01< f13acee780cedb3e06a6dadf64d9104cccd2b9fc affected
0df4fabe208d9576f2671d31e77cf46d20fdcd01< 85cc8a187f2de7a91e2cea522e9406fa12999269 affected
0df4fabe208d9576f2671d31e77cf46d20fdcd01< 00ef8885a945c37551547d8ac8361cacd20c4e42 affected
4.6 affected
< 4.6 unaffected
6.0.17≤ 6.0.* unaffected
6.1.3≤ 6.1.* unaffected
6.2≤ * unaffected
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I. Basic Information for CVE-2022-50236

Vulnerability Information
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Vulnerability Title
iommu/mediatek: Fix crash on isr after kexec()
Source: CVE Program / CVE List V5
Vulnerability 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 ]
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
Linux kernel 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Linux kernel是美国等都是美国(Linux)基金会的产品。Linux kernel是开源操作系统Linux所使用的内核。Symfony ux等都是(Symfony)开源的产品。ux是一个Symfony的JavaScript生态系统。R infrastructure gh等都是(R infrastructure)开源的产品。gh是一个GitHub的API库。 Linux kernel存在安全漏洞，该漏洞源于iommu/mediatek组件在kexec后未正确初始化域，可能导致无效内存访问错误。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Linux Linux 0df4fabe208d9576f2671d31e77cf46d20fdcd01 ~ f13acee780cedb3e06a6dadf64d9104cccd2b9fc -
Linux Linux 4.6 -

II. Public POCs for CVE-2022-50236

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III. Intelligence Information for CVE-2022-50236

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Same Patch Batch · Linux · 2025-09-15 · 210 CVEs total

CVE-2022-50235 9.8 CRITICAL NFSD: Protect against send buffer overflow in NFSv2 READDIR
CVE-2022-50335 9.8 CRITICAL 9p: set req refcount to zero to avoid uninitialized usage
CVE-2023-53192 9.8 CRITICAL vxlan: Fix nexthop hash size
CVE-2023-53253 8.8 HIGH HID: nvidia-shield: Reference hid_device devm allocation of input_dev name
CVE-2023-53226 8.8 HIGH wifi: mwifiex: Fix OOB and integer underflow when rx packets
CVE-2022-50241 8.8 HIGH NFSD: fix use-after-free on source server when doing inter-server copy
CVE-2023-53194 8.4 HIGH fs/ntfs3: Add length check in indx_get_root
CVE-2023-53213 8.1 HIGH wifi: brcmfmac: slab-out-of-bounds read in brcmf_get_assoc_ies()
CVE-2023-53186 8.1 HIGH skbuff: Fix a race between coalescing and releasing SKBs
CVE-2022-50303 7.8 HIGH drm/amdkfd: Fix double release compute pasid
CVE-2023-53254 7.8 HIGH cacheinfo: Fix shared_cpu_map to handle shared caches at different levels
CVE-2023-53170 7.8 HIGH net: dsa: Removed unneeded of_node_put in felix_parse_ports_node
CVE-2023-53252 7.8 HIGH Bluetooth: use RCU for hci_conn_params and iterate safely in hci_sync
CVE-2023-53176 7.8 HIGH serial: 8250: Reinit port->pm on port specific driver unbind
CVE-2023-53178 7.8 HIGH mm: fix zswap writeback race condition
CVE-2023-53179 7.8 HIGH netfilter: ipset: add the missing IP_SET_HASH_WITH_NET0 macro for ip_set_hash_netportnet.c
CVE-2023-53184 7.8 HIGH arm64/sme: Set new vector length before reallocating
CVE-2022-50315 7.8 HIGH ata: ahci: Match EM_MAX_SLOTS with SATA_PMP_MAX_PORTS
CVE-2023-53189 7.8 HIGH ipv6/addrconf: fix a potential refcount underflow for idev
CVE-2023-53216 7.8 HIGH arm64: efi: Make efi_rt_lock a raw_spinlock

Showing top 20 of 210 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2022-50236

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