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NVD / CVE Program· CNA Linux

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

Noroxi assessment

Priority: Monitor (action score 22/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 0.18% (FIRST EPSS).
  • Someone with local access to the system can trigger it. A low-privileged account is enough. No user action is required. No special conditions are required; it is repeatable.
  • Fixed version: Linux Linux 2f75cb27bef43c8692b0f5e471e5632f6a9beb99, 38e8844005e6068f336a3ad45451a562a0040ca1, 69f9d2d37d1207c5a73dac52a4ce1361ead707f5.

Low priority for now. Upgrade to Linux Linux 2f75cb27bef43c8692b0f5e471e5632f6a9beb99, 38e8844005e6068f336a3ad45451a562a0040ca1, 69f9d2d37d1207c5a73dac52a4ce1361ead707f5 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

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.

MediumCVSS 5.5 · v3.1—No exploit Fix available
Published
May 1, 2025
Updated
Jun 17, 2026
EPSS
0.1% · 8th percentile

Report tools

JSON

Action score

22

Monitor

Low priority for now.

CVSS
22 / 40 · 5.5 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.1%

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • A fix has been released

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Follow CVE-2025-37748

When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

VendorProduct
linuxlinux kernel
debiandebian linux

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • debian debian linux11.0
  • linux linux kernel6.2 and later · before 6.6.88
  • linux linux kernel6.7 and later · before 6.12.24
  • linux linux kernel5.19 and later · before 6.1.135
  • linux linux kernel6.14 and later · before 6.14.3
  • linux linux kernel6.13 and later · before 6.13.12
  • linux linux kernel6.15

Versions reported by the vendor

Affected version ranges reported by the assigning authority (Linux). Independent of NVD's CPE analysis and usually ahead of it.

  • Linux Linux

    • 5.19affected
    • 9e3a2a64365318a743e3c0b028952d2cdbaf2b0c and later · before 2f75cb27bef43c8692b0f5e471e5632f6a9beb99affected · git
    • 9e3a2a64365318a743e3c0b028952d2cdbaf2b0c and later · before 6abd09bed43b8d83d461e0fb5b9a200a06aa8a27affected · git
    • 9e3a2a64365318a743e3c0b028952d2cdbaf2b0c and later · before a0842539e8ef9386c070156103aff888e558a60caffected · git
    • 9e3a2a64365318a743e3c0b028952d2cdbaf2b0c and later · before ce7d3b2f6f393fa35f0ea12861b83a1ca28b295caffected · git
    • 9e3a2a64365318a743e3c0b028952d2cdbaf2b0c and later · before 69f9d2d37d1207c5a73dac52a4ce1361ead707f5affected · git
    • 9e3a2a64365318a743e3c0b028952d2cdbaf2b0c and later · before 38e8844005e6068f336a3ad45451a562a0040ca1affected · git
    • before 5.19not affected · semver
    • 6.1.135 and later · up to and including 6.1.*not affected · semver
    • 6.6.88 and later · up to and including 6.6.*not affected · semver

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
Debian:12linuxbefore 6.1.135-16.1.135-1
Debian:13linuxbefore 6.12.25-16.12.25-1

Same product

linux: all records

Other highest-scoring records for the same primary product.

  • CVE-2026-31431crypto: algif_aead - Revert to operating out-of-placeKEV
    90Now
  • CVE-2022-0847A flaw was found in the way the "flags" member of the new pipe buffer structure was lacking proper initialization in copy_page_to_iter_pipe KEV
    89Now
  • CVE-2021-22555Heap Out-Of-Bounds Write in Netfilter IP6T_SO_SET_REPLACEKEV
    85Now

Published before and after this one in the same product

  • ← EarlierCVE-2025-37744May 1, 2025 · wifi: ath12k: fix memory leak in ath12k_pci_remove()
    22Monitor
  • ← EarlierCVE-2025-37745May 1, 2025 · PM: hibernate: Avoid deadlock in hibernate_compressor_param_set()
    22Monitor
  • Later →CVE-2025-37749May 1, 2025 · net: ppp: Add bound checking for skb data on ppp_sync_txmung
    28Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
Linux Linux2f75cb27bef43c8692b0f5e471e5632f6a9beb99Vendor (CNA)
Linux Linux38e8844005e6068f336a3ad45451a562a0040ca1Vendor (CNA)
Linux Linux69f9d2d37d1207c5a73dac52a4ce1361ead707f5Vendor (CNA)
Linux Linux6abd09bed43b8d83d461e0fb5b9a200a06aa8a27Vendor (CNA)
Linux Linuxa0842539e8ef9386c070156103aff888e558a60cVendor (CNA)
Linux Linuxce7d3b2f6f393fa35f0ea12861b83a1ca28b295cVendor (CNA)
debian:linux6.1.135-1 · Debian:12Package registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

  • Someone with local access to the system can trigger it.
  • A low-privileged account is enough.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
none
Integrity
none
Availability
high · the service can be disrupted
Attack vector
Local
Attack complexity
Low
Privileges required
Low
User interaction
None
Scope
Unchanged
Confidentiality impact
None
Integrity impact
None
Availability impact
High

Weakness class (CWE)

CWE-476 · NULL Pointer Dereference

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

nvd-primary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

MITRE has no CAPEC/ATT&CK mapping for this CWE.

Change log

  1. Fix✗ → ✓

For records you follow, these changes also arrive as notifications. →

References

Show all references (6 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records