Vulnerability-Lookup

GHSA-JR2G-46M2-F9RC

Vulnerability from github – Published: 2026-04-22 15:31 – Updated: 2026-04-28 18:30

Details

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

driver core: platform: use generic driver_override infrastructure

When a driver is probed through __driver_attach(), the bus' match() callback is called without the device lock held, thus accessing the driver_override field without a lock, which can cause a UAF.

Fix this by using the driver-core driver_override infrastructure taking care of proper locking internally.

Note that calling match() from __driver_attach() without the device lock held is intentional. [1]

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-2026-31527"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-416"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-04-22T14:16:52Z",
    "severity": "HIGH"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\ndriver core: platform: use generic driver_override infrastructure\n\nWhen a driver is probed through __driver_attach(), the bus\u0027 match()\ncallback is called without the device lock held, thus accessing the\ndriver_override field without a lock, which can cause a UAF.\n\nFix this by using the driver-core driver_override infrastructure taking\ncare of proper locking internally.\n\nNote that calling match() from __driver_attach() without the device lock\nheld is intentional. [1]",
  "id": "GHSA-jr2g-46m2-f9rc",
  "modified": "2026-04-28T18:30:30Z",
  "published": "2026-04-22T15:31:44Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-31527"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/2b38efc05bf7a8568ec74bfffea0f5cfa62bc01d"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/7c02a9bd7d14a89065fcf672b86d8e1d1a41d3b1"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/9a6086d2a828dd2ff74cf9abcae456670febd71f"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/edee7ee5a14c3b33f6d54641f5af5c5e9180992d"
    }
  ],
  "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-2026-31527 (GCVE-0-2026-31527)

Vulnerability from cvelistv5 – Published: 2026-04-22 13:54 – Updated: 2026-04-22 13:54

Title

driver core: platform: use generic driver_override infrastructure

Summary

In the Linux kernel, the following vulnerability has been resolved: driver core: platform: use generic driver_override infrastructure When a driver is probed through __driver_attach(), the bus' match() callback is called without the device lock held, thus accessing the driver_override field without a lock, which can cause a UAF. Fix this by using the driver-core driver_override infrastructure taking care of proper locking internally. Note that calling match() from __driver_attach() without the device lock held is intentional. [1]

Severity ?

No CVSS data available.

Assigner

Linux

References

URL

Tags

	https://git.kernel.org/stable/c/9a6086d2a828dd2ff…
	https://git.kernel.org/stable/c/7c02a9bd7d14a8906…
	https://git.kernel.org/stable/c/edee7ee5a14c3b33f…
	https://git.kernel.org/stable/c/2b38efc05bf7a8568…

Impacted products

Vendor

Product

Version

Linux

Affected: 3d713e0e382e6fcfb4bba1501645b66c129ad60b , < 9a6086d2a828dd2ff74cf9abcae456670febd71f (git)
Affected: 3d713e0e382e6fcfb4bba1501645b66c129ad60b , < 7c02a9bd7d14a89065fcf672b86d8e1d1a41d3b1 (git)
Affected: 3d713e0e382e6fcfb4bba1501645b66c129ad60b , < edee7ee5a14c3b33f6d54641f5af5c5e9180992d (git)
Affected: 3d713e0e382e6fcfb4bba1501645b66c129ad60b , < 2b38efc05bf7a8568ec74bfffea0f5cfa62bc01d (git)

Linux

Affected: 3.17
Unaffected: 0 , < 3.17 (semver)
Unaffected: 6.12.80 , ≤ 6.12.* (semver)
Unaffected: 6.18.21 , ≤ 6.18.* (semver)
Unaffected: 6.19.11 , ≤ 6.19.* (semver)
Unaffected: 7.0 , ≤ * (original_commit_for_fix)

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JSON

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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/base/platform.c",
            "drivers/bus/simple-pm-bus.c",
            "drivers/clk/imx/clk-scu.c",
            "drivers/slimbus/qcom-ngd-ctrl.c",
            "include/linux/platform_device.h",
            "sound/soc/samsung/i2s.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "9a6086d2a828dd2ff74cf9abcae456670febd71f",
              "status": "affected",
              "version": "3d713e0e382e6fcfb4bba1501645b66c129ad60b",
              "versionType": "git"
            },
            {
              "lessThan": "7c02a9bd7d14a89065fcf672b86d8e1d1a41d3b1",
              "status": "affected",
              "version": "3d713e0e382e6fcfb4bba1501645b66c129ad60b",
              "versionType": "git"
            },
            {
              "lessThan": "edee7ee5a14c3b33f6d54641f5af5c5e9180992d",
              "status": "affected",
              "version": "3d713e0e382e6fcfb4bba1501645b66c129ad60b",
              "versionType": "git"
            },
            {
              "lessThan": "2b38efc05bf7a8568ec74bfffea0f5cfa62bc01d",
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              "version": "3d713e0e382e6fcfb4bba1501645b66c129ad60b",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/base/platform.c",
            "drivers/bus/simple-pm-bus.c",
            "drivers/clk/imx/clk-scu.c",
            "drivers/slimbus/qcom-ngd-ctrl.c",
            "include/linux/platform_device.h",
            "sound/soc/samsung/i2s.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "3.17"
            },
            {
              "lessThan": "3.17",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.80",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.21",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.19.*",
              "status": "unaffected",
              "version": "6.19.11",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.0",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.80",
                  "versionStartIncluding": "3.17",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.21",
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                  "vulnerable": true
                },
                {
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                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndriver core: platform: use generic driver_override infrastructure\n\nWhen a driver is probed through __driver_attach(), the bus\u0027 match()\ncallback is called without the device lock held, thus accessing the\ndriver_override field without a lock, which can cause a UAF.\n\nFix this by using the driver-core driver_override infrastructure taking\ncare of proper locking internally.\n\nNote that calling match() from __driver_attach() without the device lock\nheld is intentional. [1]"
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-04-22T13:54:40.485Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
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          "url": "https://git.kernel.org/stable/c/9a6086d2a828dd2ff74cf9abcae456670febd71f"
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        {
          "url": "https://git.kernel.org/stable/c/edee7ee5a14c3b33f6d54641f5af5c5e9180992d"
        },
        {
          "url": "https://git.kernel.org/stable/c/2b38efc05bf7a8568ec74bfffea0f5cfa62bc01d"
        }
      ],
      "title": "driver core: platform: use generic driver_override infrastructure",
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  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-31527",
    "datePublished": "2026-04-22T13:54:40.485Z",
    "dateReserved": "2026-03-09T15:48:24.111Z",
    "dateUpdated": "2026-04-22T13:54:40.485Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date	Other

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-JR2G-46M2-F9RC

CVE-2026-31527 (GCVE-0-2026-31527)

Tags

Sightings

Nomenclature