Vulnerability-Lookup

GHSA-XPGF-3R4F-4546

Vulnerability from github – Published: 2025-06-18 12:30 – Updated: 2025-11-14 18:31

Details

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

media: pvrusb2: fix memory leak in pvr_probe

The error handling code in pvr2_hdw_create forgets to unregister the v4l2 device. When pvr2_hdw_create returns back to pvr2_context_create, it calls pvr2_context_destroy to destroy context, but mp->hdw is NULL, which leads to that pvr2_hdw_destroy directly returns.

Fix this by adding v4l2_device_unregister to decrease the refcount of usb interface.

Severity

5.5 (Medium)


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

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{
  "affected": [],
  "aliases": [
    "CVE-2022-49982"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-401"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-06-18T11:15:25Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nmedia: pvrusb2: fix memory leak in pvr_probe\n\nThe error handling code in pvr2_hdw_create forgets to unregister the\nv4l2 device. When pvr2_hdw_create returns back to pvr2_context_create,\nit calls pvr2_context_destroy to destroy context, but mp-\u003ehdw is NULL,\nwhich leads to that pvr2_hdw_destroy directly returns.\n\nFix this by adding v4l2_device_unregister to decrease the refcount of\nusb interface.",
  "id": "GHSA-xpgf-3r4f-4546",
  "modified": "2025-11-14T18:31:23Z",
  "published": "2025-06-18T12:30:39Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-49982"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/2fe46195d2f0d5d09ea65433aefe47a4d0d0ff4d"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/466b67c0543b2ae67814d053f6e29b39be6b33bb"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/491762b3250fb06a0c97b5198656ea48359eaeed"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/945a9a8e448b65bec055d37eba58f711b39f66f0"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ba7dd8a9686a61a34b3a7b922ce721378d4740d0"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/bacb37bdc2a21c8f7fdc83dcc0dea2f4ca1341fb"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/c02d2a91a85c4c4d05826cd1ea74a9b8d42e4280"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f2f6e67522916f53ad8ccd4dbe68dcf76e9776e5"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2022-49982 (GCVE-0-2022-49982)

Vulnerability from cvelistv5 – Published: 2025-06-18 11:00 – Updated: 2026-05-11 19:10

Title

media: pvrusb2: fix memory leak in pvr_probe

Summary

In the Linux kernel, the following vulnerability has been resolved: media: pvrusb2: fix memory leak in pvr_probe The error handling code in pvr2_hdw_create forgets to unregister the v4l2 device. When pvr2_hdw_create returns back to pvr2_context_create, it calls pvr2_context_destroy to destroy context, but mp->hdw is NULL, which leads to that pvr2_hdw_destroy directly returns. Fix this by adding v4l2_device_unregister to decrease the refcount of usb interface.

Severity

No CVSS data available.

Assigner

Linux mitre root

References

8 references

URL	Tags
https://git.kernel.org/stable/c/2fe46195d2f0d5d09…
https://git.kernel.org/stable/c/ba7dd8a9686a61a34…
https://git.kernel.org/stable/c/491762b3250fb06a0…
https://git.kernel.org/stable/c/466b67c0543b2ae67…
https://git.kernel.org/stable/c/bacb37bdc2a21c8f7…
https://git.kernel.org/stable/c/f2f6e67522916f53a…
https://git.kernel.org/stable/c/c02d2a91a85c4c4d0…
https://git.kernel.org/stable/c/945a9a8e448b65bec…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: b72b7bf5cbb2ae77b3bf748456655fc284baf04c , < 2fe46195d2f0d5d09ea65433aefe47a4d0d0ff4d (git) Affected: b72b7bf5cbb2ae77b3bf748456655fc284baf04c , < ba7dd8a9686a61a34b3a7b922ce721378d4740d0 (git) Affected: b72b7bf5cbb2ae77b3bf748456655fc284baf04c , < 491762b3250fb06a0c97b5198656ea48359eaeed (git) Affected: b72b7bf5cbb2ae77b3bf748456655fc284baf04c , < 466b67c0543b2ae67814d053f6e29b39be6b33bb (git) Affected: b72b7bf5cbb2ae77b3bf748456655fc284baf04c , < bacb37bdc2a21c8f7fdc83dcc0dea2f4ca1341fb (git) Affected: b72b7bf5cbb2ae77b3bf748456655fc284baf04c , < f2f6e67522916f53ad8ccd4dbe68dcf76e9776e5 (git) Affected: b72b7bf5cbb2ae77b3bf748456655fc284baf04c , < c02d2a91a85c4c4d05826cd1ea74a9b8d42e4280 (git) Affected: b72b7bf5cbb2ae77b3bf748456655fc284baf04c , < 945a9a8e448b65bec055d37eba58f711b39f66f0 (git)
Linux	Linux	Affected: 2.6.30 Unaffected: 0 , < 2.6.30 (semver) Unaffected: 4.9.327 , ≤ 4.9.* (semver) Unaffected: 4.14.292 , ≤ 4.14.* (semver) Unaffected: 4.19.257 , ≤ 4.19.* (semver) Unaffected: 5.4.212 , ≤ 5.4.* (semver) Unaffected: 5.10.141 , ≤ 5.10.* (semver) Unaffected: 5.15.65 , ≤ 5.15.* (semver) Unaffected: 5.19.7 , ≤ 5.19.* (semver) Unaffected: 6.0 , ≤ * (original_commit_for_fix)

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JSON

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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/media/usb/pvrusb2/pvrusb2-hdw.c"
          ],
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          "versions": [
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              "versionType": "git"
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            {
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          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "2.6.30"
            },
            {
              "lessThan": "2.6.30",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "4.9.*",
              "status": "unaffected",
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              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "4.14.*",
              "status": "unaffected",
              "version": "4.14.292",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "4.19.*",
              "status": "unaffected",
              "version": "4.19.257",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.4.*",
              "status": "unaffected",
              "version": "5.4.212",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.141",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.65",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.19.*",
              "status": "unaffected",
              "version": "5.19.7",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.0",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
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                  "versionStartIncluding": "2.6.30",
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmedia: pvrusb2: fix memory leak in pvr_probe\n\nThe error handling code in pvr2_hdw_create forgets to unregister the\nv4l2 device. When pvr2_hdw_create returns back to pvr2_context_create,\nit calls pvr2_context_destroy to destroy context, but mp-\u003ehdw is NULL,\nwhich leads to that pvr2_hdw_destroy directly returns.\n\nFix this by adding v4l2_device_unregister to decrease the refcount of\nusb interface."
        }
      ],
      "providerMetadata": {
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        },
        {
          "url": "https://git.kernel.org/stable/c/945a9a8e448b65bec055d37eba58f711b39f66f0"
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      "title": "media: pvrusb2: fix memory leak in pvr_probe",
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  "cveMetadata": {
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    "cveId": "CVE-2022-49982",
    "datePublished": "2025-06-18T11:00:44.285Z",
    "dateReserved": "2025-06-18T10:57:27.385Z",
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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.
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