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CVE-2025-37748— iommu/mediatek: Fix NULL pointer deference in mtk_iommu_device_group

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Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于iommu/mediatek中mtk_iommu_device_group函数的空指针解引用。

AI Predicted 6.0 Difficulty: Moderate EPSS 0.19% · P8

Possible ATT&CK Techniques 1 AI

T1068 · Exploitation for Privilege Escalation

Affected Version Matrix 14

VendorProduct Version RangeStatus
Linux Linux 9e3a2a64365318a743e3c0b028952d2cdbaf2b0c< 2f75cb27bef43c8692b0f5e471e5632f6a9beb99 affected
9e3a2a64365318a743e3c0b028952d2cdbaf2b0c< 6abd09bed43b8d83d461e0fb5b9a200a06aa8a27 affected
9e3a2a64365318a743e3c0b028952d2cdbaf2b0c< a0842539e8ef9386c070156103aff888e558a60c affected
9e3a2a64365318a743e3c0b028952d2cdbaf2b0c< ce7d3b2f6f393fa35f0ea12861b83a1ca28b295c affected
9e3a2a64365318a743e3c0b028952d2cdbaf2b0c< 69f9d2d37d1207c5a73dac52a4ce1361ead707f5 affected
9e3a2a64365318a743e3c0b028952d2cdbaf2b0c< 38e8844005e6068f336a3ad45451a562a0040ca1 affected
5.19 affected
< 5.19 unaffected
… +6 more rows
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I. Basic Information for CVE-2025-37748

Vulnerability Information
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Vulnerability Title
iommu/mediatek: Fix NULL pointer deference in mtk_iommu_device_group
Source: CVE Program / CVE List V5
Vulnerability Description
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.
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Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于iommu/mediatek中mtk_iommu_device_group函数的空指针解引用。
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 9e3a2a64365318a743e3c0b028952d2cdbaf2b0c ~ 2f75cb27bef43c8692b0f5e471e5632f6a9beb99 -
Linux Linux 5.19 -

II. Public POCs for CVE-2025-37748

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III. Intelligence Information for CVE-2025-37748

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Patches & Fixes for CVE-2025-37748 (6)

Same Patch Batch · Linux · 2025-05-01 · 245 CVEs total

CVE-2025-37750 9.8 CRITICAL smb: client: fix UAF in decryption with multichannel
CVE-2025-37778 9.8 CRITICAL ksmbd: Fix dangling pointer in krb_authenticate
CVE-2022-49770 9.8 CRITICAL ceph: avoid putting the realm twice when decoding snaps fails
CVE-2022-49931 8.8 HIGH IB/hfi1: Correctly move list in sc_disable()
CVE-2025-37776 8.8 HIGH ksmbd: fix use-after-free in smb_break_all_levII_oplock()
CVE-2025-37777 8.8 HIGH ksmbd: fix use-after-free in __smb2_lease_break_noti()
CVE-2025-37790 8.8 HIGH net: mctp: Set SOCK_RCU_FREE
CVE-2022-49910 8.8 HIGH Bluetooth: L2CAP: Fix use-after-free caused by l2cap_reassemble_sdu
CVE-2022-49886 8.4 HIGH x86/tdx: Panic on bad configs that #VE on "private" memory access
CVE-2025-23159 8.4 HIGH media: venus: hfi: add a check to handle OOB in sfr region
CVE-2025-37749 8.2 HIGH net: ppp: Add bound checking for skb data on ppp_sync_txmung
CVE-2025-37774 7.8 HIGH slab: ensure slab->obj_exts is clear in a newly allocated slab page
CVE-2025-37789 7.8 HIGH net: openvswitch: fix nested key length validation in the set() action
CVE-2025-37779 7.8 HIGH lib/iov_iter: fix to increase non slab folio refcount
CVE-2022-49920 7.8 HIGH netfilter: nf_tables: netlink notifier might race to release objects
CVE-2022-49919 7.8 HIGH netfilter: nf_tables: release flow rule object from commit path
CVE-2025-37756 7.8 HIGH net: tls: explicitly disallow disconnect
CVE-2025-37761 7.8 HIGH drm/xe: Fix an out-of-bounds shift when invalidating TLB
CVE-2025-37763 7.8 HIGH drm/imagination: take paired job reference
CVE-2022-49804 7.8 HIGH s390: avoid using global register for current_stack_pointer

Showing top 20 of 245 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2025-37748

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