github - ghsa-v9wv-g6fx-53c4

GHSA-V9WV-G6FX-53C4

Vulnerability from github – Published: 2025-02-27 21:32 – Updated: 2025-02-27 21:32

Details

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

bus: fsl-mc-bus: fix KASAN use-after-free in fsl_mc_bus_remove()

In fsl_mc_bus_remove(), mc->root_mc_bus_dev->mc_io is passed to fsl_destroy_mc_io(). However, mc->root_mc_bus_dev is already freed in fsl_mc_device_remove(). Then reference to mc->root_mc_bus_dev->mc_io triggers KASAN use-after-free. To avoid the use-after-free, keep the reference to mc->root_mc_bus_dev->mc_io in a local variable and pass to fsl_destroy_mc_io().

This patch needs rework to apply to kernels older than v5.15.

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-2022-49711"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-416"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-02-26T07:01:46Z",
    "severity": "HIGH"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nbus: fsl-mc-bus: fix KASAN use-after-free in fsl_mc_bus_remove()\n\nIn fsl_mc_bus_remove(), mc-\u003eroot_mc_bus_dev-\u003emc_io is passed to\nfsl_destroy_mc_io(). However, mc-\u003eroot_mc_bus_dev is already freed in\nfsl_mc_device_remove(). Then reference to mc-\u003eroot_mc_bus_dev-\u003emc_io\ntriggers KASAN use-after-free. To avoid the use-after-free, keep the\nreference to mc-\u003eroot_mc_bus_dev-\u003emc_io in a local variable and pass to\nfsl_destroy_mc_io().\n\nThis patch needs rework to apply to kernels older than v5.15.",
  "id": "GHSA-v9wv-g6fx-53c4",
  "modified": "2025-02-27T21:32:15Z",
  "published": "2025-02-27T21:32:15Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-49711"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/161b68b0a728377aaa10a8e14c70e7734f3c9ff7"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/928ea98252ad75118950941683893cf904541da9"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ccd1751092341ac120a961835211f9f2e3735963"
    }
  ],
  "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-2022-49711 (GCVE-0-2022-49711)

Vulnerability from cvelistv5 – Published: 2025-02-26 02:24 – Updated: 2025-05-04 08:43

Summary

In the Linux kernel, the following vulnerability has been resolved: bus: fsl-mc-bus: fix KASAN use-after-free in fsl_mc_bus_remove() In fsl_mc_bus_remove(), mc->root_mc_bus_dev->mc_io is passed to fsl_destroy_mc_io(). However, mc->root_mc_bus_dev is already freed in fsl_mc_device_remove(). Then reference to mc->root_mc_bus_dev->mc_io triggers KASAN use-after-free. To avoid the use-after-free, keep the reference to mc->root_mc_bus_dev->mc_io in a local variable and pass to fsl_destroy_mc_io(). This patch needs rework to apply to kernels older than v5.15.

Severity ?

7.8 (High)


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

CWE

CWE-416 - Use After Free

Assigner

Linux

References

URL

Tags

	https://git.kernel.org/stable/c/ccd1751092341ac12…
	https://git.kernel.org/stable/c/161b68b0a728377aa…
	https://git.kernel.org/stable/c/928ea98252ad75118…

Impacted products

Vendor

Product

Version

Linux

Affected: f93627146f0e371093966ed3d44c065aa077cfb1 , < ccd1751092341ac120a961835211f9f2e3735963 (git)
Affected: f93627146f0e371093966ed3d44c065aa077cfb1 , < 161b68b0a728377aaa10a8e14c70e7734f3c9ff7 (git)
Affected: f93627146f0e371093966ed3d44c065aa077cfb1 , < 928ea98252ad75118950941683893cf904541da9 (git)

Linux

Affected: 4.8
Unaffected: 0 , < 4.8 (semver)
Unaffected: 5.15.49 , ≤ 5.15.* (semver)
Unaffected: 5.18.6 , ≤ 5.18.* (semver)
Unaffected: 5.19 , ≤ * (original_commit_for_fix)

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JSON

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{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "cvssV3_1": {
              "attackComplexity": "LOW",
              "attackVector": "LOCAL",
              "availabilityImpact": "HIGH",
              "baseScore": 7.8,
              "baseSeverity": "HIGH",
              "confidentialityImpact": "HIGH",
              "integrityImpact": "HIGH",
              "privilegesRequired": "LOW",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
              "version": "3.1"
            }
          },
          {
            "other": {
              "content": {
                "id": "CVE-2022-49711",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-02-27T18:14:53.258258Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "problemTypes": [
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            "descriptions": [
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                "cweId": "CWE-416",
                "description": "CWE-416 Use After Free",
                "lang": "en",
                "type": "CWE"
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        "providerMetadata": {
          "dateUpdated": "2025-02-27T18:22:30.635Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/bus/fsl-mc/fsl-mc-bus.c"
          ],
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        {
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          "product": "Linux",
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          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "4.8"
            },
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              "lessThan": "4.8",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
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              "status": "unaffected",
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              "versionType": "semver"
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              "status": "unaffected",
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      ],
      "cpeApplicability": [
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              "negate": false,
              "operator": "OR"
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      ],
      "descriptions": [
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          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbus: fsl-mc-bus: fix KASAN use-after-free in fsl_mc_bus_remove()\n\nIn fsl_mc_bus_remove(), mc-\u003eroot_mc_bus_dev-\u003emc_io is passed to\nfsl_destroy_mc_io(). However, mc-\u003eroot_mc_bus_dev is already freed in\nfsl_mc_device_remove(). Then reference to mc-\u003eroot_mc_bus_dev-\u003emc_io\ntriggers KASAN use-after-free. To avoid the use-after-free, keep the\nreference to mc-\u003eroot_mc_bus_dev-\u003emc_io in a local variable and pass to\nfsl_destroy_mc_io().\n\nThis patch needs rework to apply to kernels older than v5.15."
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      "providerMetadata": {
        "dateUpdated": "2025-05-04T08:43:51.419Z",
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        {
          "url": "https://git.kernel.org/stable/c/928ea98252ad75118950941683893cf904541da9"
        }
      ],
      "title": "bus: fsl-mc-bus: fix KASAN use-after-free in fsl_mc_bus_remove()",
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    "datePublished": "2025-02-26T02:24:28.224Z",
    "dateReserved": "2025-02-26T02:21:30.444Z",
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    "state": "PUBLISHED"
  },
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  "dataVersion": "5.1"
}

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-V9WV-G6FX-53C4

CVE-2022-49711 (GCVE-0-2022-49711)

Tags

Sightings

Nomenclature