github - ghsa-x77f-2wpm-x48r

ghsa-x77f-2wpm-x48r

Vulnerability from github

Published

2025-09-15 15:31

Modified

2025-09-15 15:31

Details

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

media: dvbdev: adopts refcnt to avoid UAF

dvb_unregister_device() is known that prone to use-after-free. That is, the cleanup from dvb_unregister_device() releases the dvb_device even if there are pointers stored in file->private_data still refer to it.

This patch adds a reference counter into struct dvb_device and delays its deallocation until no pointer refers to the object.

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{
  "affected": [],
  "aliases": [
    "CVE-2022-50274"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-09-15T15:15:38Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nmedia: dvbdev: adopts refcnt to avoid UAF\n\ndvb_unregister_device() is known that prone to use-after-free.\nThat is, the cleanup from dvb_unregister_device() releases the dvb_device\neven if there are pointers stored in file-\u003eprivate_data still refer to it.\n\nThis patch adds a reference counter into struct dvb_device and delays its\ndeallocation until no pointer refers to the object.",
  "id": "GHSA-x77f-2wpm-x48r",
  "modified": "2025-09-15T15:31:25Z",
  "published": "2025-09-15T15:31:25Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-50274"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0fc044b2b5e2d05a1fa1fb0d7f270367a7855d79"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/219b44bf94203bd433aa91b7796475bf656348e5"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/2abd73433872194bccdf1432a0980e4ec5273c2a"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/6d18b44bb44e1f4d97dfe0efe92ac0f0984739c2"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/88a6f8a72d167294c0931c7874941bf37a41b6dd"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/9945d05d6693710574f354c5dbddc47f5101eb77"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a2f0a08aa613176c9688c81d7b598a7779974991"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ac521bbe3d00fa574e66a9361763f2b37725bc97"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

CVE-2022-50274 (GCVE-0-2022-50274)

Vulnerability from cvelistv5

Published

2025-09-15 14:21

Modified

2025-09-15 14:21

Severity ?

Summary

In the Linux kernel, the following vulnerability has been resolved: media: dvbdev: adopts refcnt to avoid UAF dvb_unregister_device() is known that prone to use-after-free. That is, the cleanup from dvb_unregister_device() releases the dvb_device even if there are pointers stored in file->private_data still refer to it. This patch adds a reference counter into struct dvb_device and delays its deallocation until no pointer refers to the object.

References

▼	URL	Tags
	https://git.kernel.org/stable/c/ac521bbe3d00fa574e66a9361763f2b37725bc97
	https://git.kernel.org/stable/c/219b44bf94203bd433aa91b7796475bf656348e5
	https://git.kernel.org/stable/c/6d18b44bb44e1f4d97dfe0efe92ac0f0984739c2
	https://git.kernel.org/stable/c/2abd73433872194bccdf1432a0980e4ec5273c2a
	https://git.kernel.org/stable/c/88a6f8a72d167294c0931c7874941bf37a41b6dd
	https://git.kernel.org/stable/c/a2f0a08aa613176c9688c81d7b598a7779974991
	https://git.kernel.org/stable/c/9945d05d6693710574f354c5dbddc47f5101eb77
	https://git.kernel.org/stable/c/0fc044b2b5e2d05a1fa1fb0d7f270367a7855d79

Impacted products

Vendor

Product

Version

▼

Linux

Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2

Linux

Show details on NVD website

JSON

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{
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      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/media/dvb-core/dvb_ca_en50221.c",
            "drivers/media/dvb-core/dvb_frontend.c",
            "drivers/media/dvb-core/dvbdev.c",
            "include/media/dvbdev.h"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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          "versions": [
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              "versionType": "git"
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              "versionType": "git"
            }
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        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/media/dvb-core/dvb_ca_en50221.c",
            "drivers/media/dvb-core/dvb_frontend.c",
            "drivers/media/dvb-core/dvbdev.c",
            "include/media/dvbdev.h"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThanOrEqual": "4.14.*",
              "status": "unaffected",
              "version": "4.14.303",
              "versionType": "semver"
            },
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              "status": "unaffected",
              "version": "4.19.270",
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            },
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              "status": "unaffected",
              "version": "5.4.229",
              "versionType": "semver"
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              "status": "unaffected",
              "version": "5.10.163",
              "versionType": "semver"
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              "status": "unaffected",
              "version": "5.15.86",
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            },
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              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.2",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
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              "versionType": "original_commit_for_fix"
            }
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        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
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              "cpeMatch": [
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          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmedia: dvbdev: adopts refcnt to avoid UAF\n\ndvb_unregister_device() is known that prone to use-after-free.\nThat is, the cleanup from dvb_unregister_device() releases the dvb_device\neven if there are pointers stored in file-\u003eprivate_data still refer to it.\n\nThis patch adds a reference counter into struct dvb_device and delays its\ndeallocation until no pointer refers to the object."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-09-15T14:21:10.383Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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  "cveMetadata": {
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    "datePublished": "2025-09-15T14:21:10.383Z",
    "dateReserved": "2025-09-15T13:58:00.975Z",
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    "state": "PUBLISHED"
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}

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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