Vulnerability-Lookup

GHSA-M2F3-4P6H-4879

Vulnerability from github – Published: 2026-01-13 18:31 – Updated: 2026-03-25 21:30

Details

In the Linux kernel, the following vulnerability has been resolved:

iommu/mediatek: fix use-after-free on probe deferral

The driver is dropping the references taken to the larb devices during probe after successful lookup as well as on errors. This can potentially lead to a use-after-free in case a larb device has not yet been bound to its driver so that the iommu driver probe defers.

Fix this by keeping the references as expected while the iommu driver is bound.

Severity

7.8 (High)


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

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{
  "affected": [],
  "aliases": [
    "CVE-2025-71071"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-416"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-01-13T16:16:06Z",
    "severity": "HIGH"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\niommu/mediatek: fix use-after-free on probe deferral\n\nThe driver is dropping the references taken to the larb devices during\nprobe after successful lookup as well as on errors. This can\npotentially lead to a use-after-free in case a larb device has not yet\nbeen bound to its driver so that the iommu driver probe defers.\n\nFix this by keeping the references as expected while the iommu driver is\nbound.",
  "id": "GHSA-m2f3-4p6h-4879",
  "modified": "2026-03-25T21:30:20Z",
  "published": "2026-01-13T18:31:05Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-71071"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/1ef70a0b104ae8011811f60bcfaa55ff49385171"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/5c04217d06a1161aaf36267e9d971ab6f847d5a7"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/896ec55da3b90bdb9fc04fedc17ad8c359b2eee5"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/de83d4617f9fe059623e97acf7e1e10d209625b5"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f6c08d3aa441bbc1956e9d65f1cbb89113a5aa8a"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2025-71071 (GCVE-0-2025-71071)

Vulnerability from cvelistv5 – Published: 2026-01-13 15:31 – Updated: 2026-05-23 16:03

Title

iommu/mediatek: fix use-after-free on probe deferral

Summary

In the Linux kernel, the following vulnerability has been resolved: iommu/mediatek: fix use-after-free on probe deferral The driver is dropping the references taken to the larb devices during probe after successful lookup as well as on errors. This can potentially lead to a use-after-free in case a larb device has not yet been bound to its driver so that the iommu driver probe defers. Fix this by keeping the references as expected while the iommu driver is bound.

Severity

No CVSS data available.

Assigner

Linux mitre root

References

5 references

URL	Tags
https://git.kernel.org/stable/c/896ec55da3b90bdb9…
https://git.kernel.org/stable/c/5c04217d06a1161aa…
https://git.kernel.org/stable/c/1ef70a0b104ae8011…
https://git.kernel.org/stable/c/f6c08d3aa441bbc19…
https://git.kernel.org/stable/c/de83d4617f9fe0596…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 8412e5dd24ffc8bc21a00bfaa0b80d4596cdc9da , < 896ec55da3b90bdb9fc04fedc17ad8c359b2eee5 (git) Affected: 26593928564cf5b576ff05d3cbd958f57c9534bb , < 5c04217d06a1161aaf36267e9d971ab6f847d5a7 (git) Affected: 26593928564cf5b576ff05d3cbd958f57c9534bb , < 1ef70a0b104ae8011811f60bcfaa55ff49385171 (git) Affected: 26593928564cf5b576ff05d3cbd958f57c9534bb , < f6c08d3aa441bbc1956e9d65f1cbb89113a5aa8a (git) Affected: 26593928564cf5b576ff05d3cbd958f57c9534bb , < de83d4617f9fe059623e97acf7e1e10d209625b5 (git) Affected: 51080de72e26771f0ed9d44982974279ccbc92b8 (git) Affected: 6.1.2 , < 6.1.160 (semver) Affected: 6.0.16 , < 6.1 (semver)
Linux	Linux	Affected: 6.2 Unaffected: 0 , < 6.2 (semver) Unaffected: 6.1.160 , ≤ 6.1.* (semver) Unaffected: 6.6.120 , ≤ 6.6.* (semver) Unaffected: 6.12.64 , ≤ 6.12.* (semver) Unaffected: 6.18.3 , ≤ 6.18.* (semver) Unaffected: 6.19 , ≤ * (original_commit_for_fix)

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{
  "containers": {
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      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/iommu/mtk_iommu.c"
          ],
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          "vendor": "Linux",
          "versions": [
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              "status": "affected",
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            },
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              "versionType": "git"
            },
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              "lessThan": "de83d4617f9fe059623e97acf7e1e10d209625b5",
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              "versionType": "git"
            },
            {
              "lessThan": "6.1.160",
              "status": "affected",
              "version": "6.1.2",
              "versionType": "semver"
            },
            {
              "lessThan": "6.1",
              "status": "affected",
              "version": "6.0.16",
              "versionType": "semver"
            }
          ]
        },
        {
          "defaultStatus": "affected",
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          "programFiles": [
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          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.2"
            },
            {
              "lessThan": "6.2",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.160",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.120",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.64",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.3",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.19",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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                },
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                },
                {
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                }
              ],
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          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\niommu/mediatek: fix use-after-free on probe deferral\n\nThe driver is dropping the references taken to the larb devices during\nprobe after successful lookup as well as on errors. This can\npotentially lead to a use-after-free in case a larb device has not yet\nbeen bound to its driver so that the iommu driver probe defers.\n\nFix this by keeping the references as expected while the iommu driver is\nbound."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-23T16:03:04.559Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
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          "url": "https://git.kernel.org/stable/c/896ec55da3b90bdb9fc04fedc17ad8c359b2eee5"
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          "url": "https://git.kernel.org/stable/c/5c04217d06a1161aaf36267e9d971ab6f847d5a7"
        },
        {
          "url": "https://git.kernel.org/stable/c/1ef70a0b104ae8011811f60bcfaa55ff49385171"
        },
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          "url": "https://git.kernel.org/stable/c/f6c08d3aa441bbc1956e9d65f1cbb89113a5aa8a"
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        {
          "url": "https://git.kernel.org/stable/c/de83d4617f9fe059623e97acf7e1e10d209625b5"
        }
      ],
      "title": "iommu/mediatek: fix use-after-free on probe deferral",
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    "assignerShortName": "Linux",
    "cveId": "CVE-2025-71071",
    "datePublished": "2026-01-13T15:31:25.400Z",
    "dateReserved": "2026-01-13T15:30:19.647Z",
    "dateUpdated": "2026-05-23T16:03:04.559Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

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Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

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GHSA-M2F3-4P6H-4879

CVE-2025-71071 (GCVE-0-2025-71071)

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