Vulnerability-Lookup

GHSA-JGH8-6HMW-5F93

Vulnerability from github – Published: 2025-03-17 18:31 – Updated: 2025-03-17 18:31

Details

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

media: pvrusb2: fix array-index-out-of-bounds in pvr2_i2c_core_init

Syzbot reported that -1 is used as array index. The problem was in missing validation check.

hdw->unit_number is initialized with -1 and then if init table walk fails this value remains unchanged. Since code blindly uses this member for array indexing adding sanity check is the easiest fix for that.

hdw->workpoll initialization moved upper to prevent warning in __flush_work.

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-2022-49478"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-129"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-02-26T07:01:24Z",
    "severity": "HIGH"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nmedia: pvrusb2: fix array-index-out-of-bounds in pvr2_i2c_core_init\n\nSyzbot reported that -1 is used as array index. The problem was in\nmissing validation check.\n\nhdw-\u003eunit_number is initialized with -1 and then if init table walk fails\nthis value remains unchanged. Since code blindly uses this member for\narray indexing adding sanity check is the easiest fix for that.\n\nhdw-\u003eworkpoll initialization moved upper to prevent warning in\n__flush_work.",
  "id": "GHSA-jgh8-6hmw-5f93",
  "modified": "2025-03-17T18:31:50Z",
  "published": "2025-03-17T18:31:50Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-49478"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/1310fc3538dcc375a2f46ef0a438512c2ca32827"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/24e807541e4a9263ed928e6ae3498de3ad43bd1e"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/2e004fe914b243db41fa96f9e583385f360ea58e"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/3309c2c574e13b21b44729f5bdbf21f60189b79a"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/4351bfe36aba9fa7dc9d68d498d25d41a0f45e67"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/471bec68457aaf981add77b4f590d65dd7da1059"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a3304766d9384886e6d3092c776273526947a2e9"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a3660e06675bccec4bf149c7229ea1d491ba10d7"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f99a8b1ec0eddc2931aeaa4f490277a15b39f511"
    }
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  "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-2022-49478 (GCVE-0-2022-49478)

Vulnerability from cvelistv5 – Published: 2025-02-26 02:13 – Updated: 2026-05-11 19:00

Title

media: pvrusb2: fix array-index-out-of-bounds in pvr2_i2c_core_init

Summary

In the Linux kernel, the following vulnerability has been resolved: media: pvrusb2: fix array-index-out-of-bounds in pvr2_i2c_core_init Syzbot reported that -1 is used as array index. The problem was in missing validation check. hdw->unit_number is initialized with -1 and then if init table walk fails this value remains unchanged. Since code blindly uses this member for array indexing adding sanity check is the easiest fix for that. hdw->workpoll initialization moved upper to prevent warning in __flush_work.

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: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2025-10-01 19:39 UTC

CWE

CWE-129 - Improper Validation of Array Index

Assigner

Linux mitre root

References

9 references

URL	Tags
https://git.kernel.org/stable/c/4351bfe36aba9fa7d…
https://git.kernel.org/stable/c/2e004fe914b243db4…
https://git.kernel.org/stable/c/a3660e06675bccec4…
https://git.kernel.org/stable/c/1310fc3538dcc375a…
https://git.kernel.org/stable/c/a3304766d9384886e…
https://git.kernel.org/stable/c/3309c2c574e13b21b…
https://git.kernel.org/stable/c/f99a8b1ec0eddc293…
https://git.kernel.org/stable/c/24e807541e4a9263e…
https://git.kernel.org/stable/c/471bec68457aaf981…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: d855497edbfbf9e19a17f4a1154bca69cb4bd9ba , < 4351bfe36aba9fa7dc9d68d498d25d41a0f45e67 (git) Affected: d855497edbfbf9e19a17f4a1154bca69cb4bd9ba , < 2e004fe914b243db41fa96f9e583385f360ea58e (git) Affected: d855497edbfbf9e19a17f4a1154bca69cb4bd9ba , < a3660e06675bccec4bf149c7229ea1d491ba10d7 (git) Affected: d855497edbfbf9e19a17f4a1154bca69cb4bd9ba , < 1310fc3538dcc375a2f46ef0a438512c2ca32827 (git) Affected: d855497edbfbf9e19a17f4a1154bca69cb4bd9ba , < a3304766d9384886e6d3092c776273526947a2e9 (git) Affected: d855497edbfbf9e19a17f4a1154bca69cb4bd9ba , < 3309c2c574e13b21b44729f5bdbf21f60189b79a (git) Affected: d855497edbfbf9e19a17f4a1154bca69cb4bd9ba , < f99a8b1ec0eddc2931aeaa4f490277a15b39f511 (git) Affected: d855497edbfbf9e19a17f4a1154bca69cb4bd9ba , < 24e807541e4a9263ed928e6ae3498de3ad43bd1e (git) Affected: d855497edbfbf9e19a17f4a1154bca69cb4bd9ba , < 471bec68457aaf981add77b4f590d65dd7da1059 (git)
Linux	Linux	Affected: 2.6.18 Unaffected: 0 , < 2.6.18 (semver) Unaffected: 4.9.318 , ≤ 4.9.* (semver) Unaffected: 4.14.283 , ≤ 4.14.* (semver) Unaffected: 4.19.247 , ≤ 4.19.* (semver) Unaffected: 5.4.198 , ≤ 5.4.* (semver) Unaffected: 5.10.121 , ≤ 5.10.* (semver) Unaffected: 5.15.46 , ≤ 5.15.* (semver) Unaffected: 5.17.14 , ≤ 5.17.* (semver) Unaffected: 5.18.3 , ≤ 5.18.* (semver) Unaffected: 5.19 , ≤ * (original_commit_for_fix)

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JSON

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              "confidentialityImpact": "HIGH",
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              "status": "unaffected",
              "version": "4.9.318",
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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.