Vulnerability-Lookup

GHSA-M2F3-4P6H-4879

Vulnerability from github – Published: 2026-01-13 18:31 – Updated: 2026-01-13 18:31

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.

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{
  "affected": [],
  "aliases": [
    "CVE-2025-71071"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-01-13T16:16:06Z",
    "severity": null
  },
  "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": "2026-01-13T18:31:05Z",
  "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": []
}

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

Vulnerability from cvelistv5 – Published: 2026-01-13 15:31 – Updated: 2026-01-13 15:31

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

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

Vendor

Product

Version

Linux

Affected: 8412e5dd24ffc8bc21a00bfaa0b80d4596cdc9da , < 896ec55da3b90bdb9fc04fedc17ad8c359b2eee5 (git)
Affected: 26593928564cf5b576ff05d3cbd958f57c9534bb , < 5c04217d06a1161aaf36267e9d971ab6f847d5a7 (git)
Affected: 26593928564cf5b576ff05d3cbd958f57c9534bb , < 1ef70a0b104ae8011811f60bcfaa55ff49385171 (git)
Affected: 26593928564cf5b576ff05d3cbd958f57c9534bb , < f6c08d3aa441bbc1956e9d65f1cbb89113a5aa8a (git)
Affected: 26593928564cf5b576ff05d3cbd958f57c9534bb , < de83d4617f9fe059623e97acf7e1e10d209625b5 (git)
Affected: 51080de72e26771f0ed9d44982974279ccbc92b8 (git)

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-rc1 , ≤ * (original_commit_for_fix)

Show details on NVD website

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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/iommu/mtk_iommu.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "896ec55da3b90bdb9fc04fedc17ad8c359b2eee5",
              "status": "affected",
              "version": "8412e5dd24ffc8bc21a00bfaa0b80d4596cdc9da",
              "versionType": "git"
            },
            {
              "lessThan": "5c04217d06a1161aaf36267e9d971ab6f847d5a7",
              "status": "affected",
              "version": "26593928564cf5b576ff05d3cbd958f57c9534bb",
              "versionType": "git"
            },
            {
              "lessThan": "1ef70a0b104ae8011811f60bcfaa55ff49385171",
              "status": "affected",
              "version": "26593928564cf5b576ff05d3cbd958f57c9534bb",
              "versionType": "git"
            },
            {
              "lessThan": "f6c08d3aa441bbc1956e9d65f1cbb89113a5aa8a",
              "status": "affected",
              "version": "26593928564cf5b576ff05d3cbd958f57c9534bb",
              "versionType": "git"
            },
            {
              "lessThan": "de83d4617f9fe059623e97acf7e1e10d209625b5",
              "status": "affected",
              "version": "26593928564cf5b576ff05d3cbd958f57c9534bb",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "51080de72e26771f0ed9d44982974279ccbc92b8",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/iommu/mtk_iommu.c"
          ],
          "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-rc1",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.160",
                  "versionStartIncluding": "6.1.2",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.120",
                  "versionStartIncluding": "6.2",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.64",
                  "versionStartIncluding": "6.2",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.3",
                  "versionStartIncluding": "6.2",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.19-rc1",
                  "versionStartIncluding": "6.2",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionStartIncluding": "6.0.16",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "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": "2026-01-13T15:31:25.400Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/896ec55da3b90bdb9fc04fedc17ad8c359b2eee5"
        },
        {
          "url": "https://git.kernel.org/stable/c/5c04217d06a1161aaf36267e9d971ab6f847d5a7"
        },
        {
          "url": "https://git.kernel.org/stable/c/1ef70a0b104ae8011811f60bcfaa55ff49385171"
        },
        {
          "url": "https://git.kernel.org/stable/c/f6c08d3aa441bbc1956e9d65f1cbb89113a5aa8a"
        },
        {
          "url": "https://git.kernel.org/stable/c/de83d4617f9fe059623e97acf7e1e10d209625b5"
        }
      ],
      "title": "iommu/mediatek: fix use-after-free on probe deferral",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2025-71071",
    "datePublished": "2026-01-13T15:31:25.400Z",
    "dateReserved": "2026-01-13T15:30:19.647Z",
    "dateUpdated": "2026-01-13T15:31:25.400Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
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.

Detection rules are retrieved from Rulezet.

Action not permitted

GHSA-M2F3-4P6H-4879

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

Tags

Sightings

Nomenclature