github - ghsa-2q8v-283f-c73j

ghsa-2q8v-283f-c73j

Vulnerability from github

Published

2024-04-10 21:30

Modified

2024-04-10 21:30

Details

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

clk: sunxi-ng: Unregister clocks/resets when unbinding

Currently, unbinding a CCU driver unmaps the device's MMIO region, while leaving its clocks/resets and their providers registered. This can cause a page fault later when some clock operation tries to perform MMIO. Fix this by separating the CCU initialization from the memory allocation, and then using a devres callback to unregister the clocks and resets.

This also fixes a memory leak of the struct ccu_reset, and uses the correct owner (the specific platform driver) for the clocks and resets.

Early OF clock providers are never unregistered, and limited error handling is possible, so they are mostly unchanged. The error reporting is made more consistent by moving the message inside of_sunxi_ccu_probe.

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{
  "affected": [],
  "aliases": [
    "CVE-2021-47205"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-04-10T19:15:48Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nclk: sunxi-ng: Unregister clocks/resets when unbinding\n\nCurrently, unbinding a CCU driver unmaps the device\u0027s MMIO region, while\nleaving its clocks/resets and their providers registered. This can cause\na page fault later when some clock operation tries to perform MMIO. Fix\nthis by separating the CCU initialization from the memory allocation,\nand then using a devres callback to unregister the clocks and resets.\n\nThis also fixes a memory leak of the `struct ccu_reset`, and uses the\ncorrect owner (the specific platform driver) for the clocks and resets.\n\nEarly OF clock providers are never unregistered, and limited error\nhandling is possible, so they are mostly unchanged. The error reporting\nis made more consistent by moving the message inside of_sunxi_ccu_probe.",
  "id": "GHSA-2q8v-283f-c73j",
  "modified": "2024-04-10T21:30:31Z",
  "published": "2024-04-10T21:30:31Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-47205"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/9bec2b9c6134052994115d2d3374e96f2ccb9b9d"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b5dd513daa70ee8f6d281a20bd28485ee9bb7db2"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

cve-2021-47205

Vulnerability from cvelistv5

Published

2024-04-10 18:56

Modified

2024-11-04 12:01

Severity ?

Summary

clk: sunxi-ng: Unregister clocks/resets when unbinding

References

▼	URL	Tags
	https://git.kernel.org/stable/c/b5dd513daa70ee8f6d281a20bd28485ee9bb7db2
	https://git.kernel.org/stable/c/9bec2b9c6134052994115d2d3374e96f2ccb9b9d

Impacted products

Vendor

Product

Version

▼

Linux

Version: 1da177e4c3f4
Version: 1da177e4c3f4

Linux

Show details on NVD website

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{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2021-47205",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2024-04-12T16:35:34.459047Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2024-06-04T17:13:34.061Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      },
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-04T05:32:07.375Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
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        "references": [
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            "tags": [
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            "url": "https://git.kernel.org/stable/c/b5dd513daa70ee8f6d281a20bd28485ee9bb7db2"
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            "url": "https://git.kernel.org/stable/c/9bec2b9c6134052994115d2d3374e96f2ccb9b9d"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/clk/sunxi-ng/ccu-sun4i-a10.c",
            "drivers/clk/sunxi-ng/ccu-sun50i-a100-r.c",
            "drivers/clk/sunxi-ng/ccu-sun50i-a100.c",
            "drivers/clk/sunxi-ng/ccu-sun50i-a64.c",
            "drivers/clk/sunxi-ng/ccu-sun50i-h6-r.c",
            "drivers/clk/sunxi-ng/ccu-sun50i-h6.c",
            "drivers/clk/sunxi-ng/ccu-sun50i-h616.c",
            "drivers/clk/sunxi-ng/ccu-sun5i.c",
            "drivers/clk/sunxi-ng/ccu-sun6i-a31.c",
            "drivers/clk/sunxi-ng/ccu-sun8i-a23.c",
            "drivers/clk/sunxi-ng/ccu-sun8i-a33.c",
            "drivers/clk/sunxi-ng/ccu-sun8i-a83t.c",
            "drivers/clk/sunxi-ng/ccu-sun8i-de2.c",
            "drivers/clk/sunxi-ng/ccu-sun8i-h3.c",
            "drivers/clk/sunxi-ng/ccu-sun8i-r.c",
            "drivers/clk/sunxi-ng/ccu-sun8i-r40.c",
            "drivers/clk/sunxi-ng/ccu-sun8i-v3s.c",
            "drivers/clk/sunxi-ng/ccu-sun9i-a80-de.c",
            "drivers/clk/sunxi-ng/ccu-sun9i-a80-usb.c",
            "drivers/clk/sunxi-ng/ccu-sun9i-a80.c",
            "drivers/clk/sunxi-ng/ccu-suniv-f1c100s.c",
            "drivers/clk/sunxi-ng/ccu_common.c",
            "drivers/clk/sunxi-ng/ccu_common.h"
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          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
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        },
        {
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          "programFiles": [
            "drivers/clk/sunxi-ng/ccu-sun4i-a10.c",
            "drivers/clk/sunxi-ng/ccu-sun50i-a100-r.c",
            "drivers/clk/sunxi-ng/ccu-sun50i-a100.c",
            "drivers/clk/sunxi-ng/ccu-sun50i-a64.c",
            "drivers/clk/sunxi-ng/ccu-sun50i-h6-r.c",
            "drivers/clk/sunxi-ng/ccu-sun50i-h6.c",
            "drivers/clk/sunxi-ng/ccu-sun50i-h616.c",
            "drivers/clk/sunxi-ng/ccu-sun5i.c",
            "drivers/clk/sunxi-ng/ccu-sun6i-a31.c",
            "drivers/clk/sunxi-ng/ccu-sun8i-a23.c",
            "drivers/clk/sunxi-ng/ccu-sun8i-a33.c",
            "drivers/clk/sunxi-ng/ccu-sun8i-a83t.c",
            "drivers/clk/sunxi-ng/ccu-sun8i-de2.c",
            "drivers/clk/sunxi-ng/ccu-sun8i-h3.c",
            "drivers/clk/sunxi-ng/ccu-sun8i-r.c",
            "drivers/clk/sunxi-ng/ccu-sun8i-r40.c",
            "drivers/clk/sunxi-ng/ccu-sun8i-v3s.c",
            "drivers/clk/sunxi-ng/ccu-sun9i-a80-de.c",
            "drivers/clk/sunxi-ng/ccu-sun9i-a80-usb.c",
            "drivers/clk/sunxi-ng/ccu-sun9i-a80.c",
            "drivers/clk/sunxi-ng/ccu-suniv-f1c100s.c",
            "drivers/clk/sunxi-ng/ccu_common.c",
            "drivers/clk/sunxi-ng/ccu_common.h"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.5",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "5.16",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nclk: sunxi-ng: Unregister clocks/resets when unbinding\n\nCurrently, unbinding a CCU driver unmaps the device\u0027s MMIO region, while\nleaving its clocks/resets and their providers registered. This can cause\na page fault later when some clock operation tries to perform MMIO. Fix\nthis by separating the CCU initialization from the memory allocation,\nand then using a devres callback to unregister the clocks and resets.\n\nThis also fixes a memory leak of the `struct ccu_reset`, and uses the\ncorrect owner (the specific platform driver) for the clocks and resets.\n\nEarly OF clock providers are never unregistered, and limited error\nhandling is possible, so they are mostly unchanged. The error reporting\nis made more consistent by moving the message inside of_sunxi_ccu_probe."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2024-11-04T12:01:29.961Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
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          "url": "https://git.kernel.org/stable/c/9bec2b9c6134052994115d2d3374e96f2ccb9b9d"
        }
      ],
      "title": "clk: sunxi-ng: Unregister clocks/resets when unbinding",
      "x_generator": {
        "engine": "bippy-9e1c9544281a"
      }
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  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2021-47205",
    "datePublished": "2024-04-10T18:56:38.347Z",
    "dateReserved": "2024-03-25T09:12:14.117Z",
    "dateUpdated": "2024-11-04T12:01:29.961Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

Sightings

Author	Source	Type	Date

Nomenclature

Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
Confirmed: The vulnerability is confirmed from an analyst perspective.
Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
Patched: This vulnerability was successfully patched by the user reporting the sighting.
Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
Not confirmed: The user expresses doubt about the veracity of the vulnerability.
Not patched: This vulnerability was not successfully patched by the user reporting the sighting.

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