Vulnerability-Lookup

FKIE_CVE-2023-52439

Vulnerability from fkie_nvd - Published: 2024-02-20 21:15 - Updated: 2026-08-04 10:18

Severity

7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Summary

In the Linux kernel, the following vulnerability has been resolved: uio: Fix use-after-free in uio_open core-1 core-2 ------------------------------------------------------- uio_unregister_device uio_open idev = idr_find() device_unregister(&idev->dev) put_device(&idev->dev) uio_device_release get_device(&idev->dev) kfree(idev) uio_free_minor(minor) uio_release put_device(&idev->dev) kfree(idev) ------------------------------------------------------- In the core-1 uio_unregister_device(), the device_unregister will kfree idev when the idev->dev kobject ref is 1. But after core-1 device_unregister, put_device and before doing kfree, the core-2 may get_device. Then: 1. After core-1 kfree idev, the core-2 will do use-after-free for idev. 2. When core-2 do uio_release and put_device, the idev will be double freed. To address this issue, we can get idev atomic & inc idev reference with minor_lock.

References

URL	Tags
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/0c9ae0b8605078eafc3bea053cc78791e97ba2e2	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/17a8519cb359c3b483fb5c7367efa9a8a508bdea	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/3174e0f7de1ba392dc191625da83df02d695b60c	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/35f102607054faafe78d2a6994b18d5d9d6e92ad	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/5cf604ee538ed0c467abe3b4cda5308a6398f0f7	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/5e0be1229ae199ebb90b33102f74a0f22d152570	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/913205930da6213305616ac539447702eaa85e41	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/e93da893d52d82d57fc0db2ca566024e0f26ff50	Patch
af854a3a-2127-422b-91ae-364da2661108	https://git.kernel.org/stable/c/0c9ae0b8605078eafc3bea053cc78791e97ba2e2	Patch
af854a3a-2127-422b-91ae-364da2661108	https://git.kernel.org/stable/c/17a8519cb359c3b483fb5c7367efa9a8a508bdea	Patch
af854a3a-2127-422b-91ae-364da2661108	https://git.kernel.org/stable/c/3174e0f7de1ba392dc191625da83df02d695b60c	Patch
af854a3a-2127-422b-91ae-364da2661108	https://git.kernel.org/stable/c/35f102607054faafe78d2a6994b18d5d9d6e92ad	Patch
af854a3a-2127-422b-91ae-364da2661108	https://git.kernel.org/stable/c/5cf604ee538ed0c467abe3b4cda5308a6398f0f7	Patch
af854a3a-2127-422b-91ae-364da2661108	https://git.kernel.org/stable/c/5e0be1229ae199ebb90b33102f74a0f22d152570	Patch
af854a3a-2127-422b-91ae-364da2661108	https://git.kernel.org/stable/c/913205930da6213305616ac539447702eaa85e41	Patch
af854a3a-2127-422b-91ae-364da2661108	https://git.kernel.org/stable/c/e93da893d52d82d57fc0db2ca566024e0f26ff50	Patch
af854a3a-2127-422b-91ae-364da2661108	https://lists.debian.org/debian-lts-announce/2024/06/msg00016.html
af854a3a-2127-422b-91ae-364da2661108	https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html
af854a3a-2127-422b-91ae-364da2661108	https://security.netapp.com/advisory/ntap-20241227-0006/

Impacted products

Vendor	Product	Version
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	4.18
linux	linux_kernel	4.18
linux	linux_kernel	4.18
linux	linux_kernel	4.18
linux	linux_kernel	4.18

JSON

To clipboard

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            },
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              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
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              "lessThanOrEqual": "4.19.*",
              "status": "unaffected",
              "version": "4.19.306",
              "versionType": "semver"
            },
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              "lessThanOrEqual": "5.4.*",
              "status": "unaffected",
              "version": "5.4.268",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.209",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.148",
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            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.74",
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              "status": "unaffected",
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            {
              "lessThanOrEqual": "6.7.*",
              "status": "unaffected",
              "version": "6.7.1",
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            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.8",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
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  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nuio: Fix use-after-free in uio_open\n\ncore-1\t\t\t\tcore-2\n-------------------------------------------------------\nuio_unregister_device\t\tuio_open\n\t\t\t\tidev = idr_find()\ndevice_unregister(\u0026idev-\u003edev)\nput_device(\u0026idev-\u003edev)\nuio_device_release\n\t\t\t\tget_device(\u0026idev-\u003edev)\nkfree(idev)\nuio_free_minor(minor)\n\t\t\t\tuio_release\n\t\t\t\tput_device(\u0026idev-\u003edev)\n\t\t\t\tkfree(idev)\n-------------------------------------------------------\n\nIn the core-1 uio_unregister_device(), the device_unregister will kfree\nidev when the idev-\u003edev kobject ref is 1. But after core-1\ndevice_unregister, put_device and before doing kfree, the core-2 may\nget_device. Then:\n1. After core-1 kfree idev, the core-2 will do use-after-free for idev.\n2. When core-2 do uio_release and put_device, the idev will be double\n   freed.\n\nTo address this issue, we can get idev atomic \u0026 inc idev reference with\nminor_lock."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: uio: corrige use-after-free en uio_open core-1 core-2 ------------------------------------------------------- uio_unregister_device uio_open idev = idr_find() device_unregister(\u0026amp;idev-\u0026gt;dev) put_device(\u0026amp;idev-\u0026gt;dev) uio_device_release get_device(\u0026amp;idev-\u0026gt;dev) kfree(idev) uio_free_minor(minor) uio_release put_device(\u0026amp;idev-\u0026gt;dev) kfree(idev) ------------------------------------------------------- In the core-1 uio_unregister_device(), the device_unregister se liberar\u00e1 idev cuando la referencia del objeto idev-\u0026gt;dev kobject es 1. But after core-1 device_unregister, put_device and before doing kfree, the core-2 may get_device. Then: 1. After core-1 kfree idev, the core-2 will do use-after-free for idev. 2. When core-2 do uio_release and put_device, el idev se liberar\u00e1 dos veces. Para solucionar este problema, podemos obtener la referencia de idev atomic \u0026amp; inc idev con minor_lock."
    }
  ],
  "id": "CVE-2023-52439",
  "lastModified": "2026-08-04T10:18:27.190",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "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"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 5.9,
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "type": "Secondary"
      },
      {
        "cvssData": {
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          "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"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 5.9,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
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    "ssvcV203": [
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        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2023-52439",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2024-09-10T16:02:55.773038Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2024-02-20T21:15:08.213",
  "references": [
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      "tags": [
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    },
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    },
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    },
    {
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      "url": "https://lists.debian.org/debian-lts-announce/2024/06/msg00016.html"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "https://security.netapp.com/advisory/ntap-20241227-0006/"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-415"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}

CVE-2023-52439 (GCVE-0-2023-52439)

Vulnerability from cvelistv5 – Published: 2024-02-20 18:34 – Updated: 2026-08-05 09:09

Title

uio: Fix use-after-free in uio_open

Summary

Severity

7.8 (High)


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

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2024-09-10 16:02 UTC

Assigner

Linux mitre root

References

11 references

URL	Tags
https://git.kernel.org/stable/c/3174e0f7de1ba392d…
https://git.kernel.org/stable/c/e93da893d52d82d57…
https://git.kernel.org/stable/c/5e0be1229ae199ebb…
https://git.kernel.org/stable/c/5cf604ee538ed0c46…
https://git.kernel.org/stable/c/17a8519cb359c3b48…
https://git.kernel.org/stable/c/35f102607054faafe…
https://git.kernel.org/stable/c/913205930da621330…
https://git.kernel.org/stable/c/0c9ae0b8605078eaf…
https://lists.debian.org/debian-lts-announce/2024…	x_transferred
https://lists.debian.org/debian-lts-announce/2024…	x_transferred
https://security.netapp.com/advisory/ntap-2024122…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 57c5f4df0a5a0ee83df799991251e2ee93a5e4e9 , < 3174e0f7de1ba392dc191625da83df02d695b60c (git) Affected: 57c5f4df0a5a0ee83df799991251e2ee93a5e4e9 , < e93da893d52d82d57fc0db2ca566024e0f26ff50 (git) Affected: 57c5f4df0a5a0ee83df799991251e2ee93a5e4e9 , < 5e0be1229ae199ebb90b33102f74a0f22d152570 (git) Affected: 57c5f4df0a5a0ee83df799991251e2ee93a5e4e9 , < 5cf604ee538ed0c467abe3b4cda5308a6398f0f7 (git) Affected: 57c5f4df0a5a0ee83df799991251e2ee93a5e4e9 , < 17a8519cb359c3b483fb5c7367efa9a8a508bdea (git) Affected: 57c5f4df0a5a0ee83df799991251e2ee93a5e4e9 , < 35f102607054faafe78d2a6994b18d5d9d6e92ad (git) Affected: 57c5f4df0a5a0ee83df799991251e2ee93a5e4e9 , < 913205930da6213305616ac539447702eaa85e41 (git) Affected: 57c5f4df0a5a0ee83df799991251e2ee93a5e4e9 , < 0c9ae0b8605078eafc3bea053cc78791e97ba2e2 (git) Affected: 13af019c87f2d90e663742cb1a819834048842ae (git) Affected: 4.14.100 , < 4.15 (semver)
Linux	Linux	Affected: 4.18 Unaffected: 0 , < 4.18 (semver) Unaffected: 4.19.306 , ≤ 4.19.* (semver) Unaffected: 5.4.268 , ≤ 5.4.* (semver) Unaffected: 5.10.209 , ≤ 5.10.* (semver) Unaffected: 5.15.148 , ≤ 5.15.* (semver) Unaffected: 6.1.74 , ≤ 6.1.* (semver) Unaffected: 6.6.13 , ≤ 6.6.* (semver) Unaffected: 6.7.1 , ≤ 6.7.* (semver) Unaffected: 6.8 , ≤ * (original_commit_for_fix)

Show details on NVD website

JSON

To clipboard

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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.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.