Vulnerability-Lookup

GHSA-HFWG-2MM4-H8C4

Vulnerability from github – Published: 2024-06-19 15:30 – Updated: 2024-11-07 18:31

Details

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

media: mxl111sf: change mutex_init() location

Syzbot reported, that mxl111sf_ctrl_msg() uses uninitialized mutex. The problem was in wrong mutex_init() location.

Previous mutex_init(&state->msg_lock) call was in ->init() function, but dvb_usbv2_init() has this order of calls:

dvb_usbv2_init()
  dvb_usbv2_adapter_init()
    dvb_usbv2_adapter_frontend_init()
      props->frontend_attach()

  props->init()

Since mxl111sf_ devices call mxl111sf_ctrl_msg() in ->frontend_attach() internally we need to initialize state->msg_lock before frontend_attach(). To achieve it, ->probe() call added to all mxl111sf_ devices, which will simply initiaize mutex.

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-2021-47583"
  ],
  "database_specific": {
    "cwe_ids": [
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    "github_reviewed": false,
    "github_reviewed_at": null,
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    "severity": "MODERATE"
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  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nmedia: mxl111sf: change mutex_init() location\n\nSyzbot reported, that mxl111sf_ctrl_msg() uses uninitialized\nmutex. The problem was in wrong mutex_init() location.\n\nPrevious mutex_init(\u0026state-\u003emsg_lock) call was in -\u003einit() function, but\ndvb_usbv2_init() has this order of calls:\n\n\tdvb_usbv2_init()\n\t  dvb_usbv2_adapter_init()\n\t    dvb_usbv2_adapter_frontend_init()\n\t      props-\u003efrontend_attach()\n\n\t  props-\u003einit()\n\nSince mxl111sf_* devices call mxl111sf_ctrl_msg() in -\u003efrontend_attach()\ninternally we need to initialize state-\u003emsg_lock before\nfrontend_attach(). To achieve it, -\u003eprobe() call added to all mxl111sf_*\ndevices, which will simply initiaize mutex.",
  "id": "GHSA-hfwg-2mm4-h8c4",
  "modified": "2024-11-07T18:31:21Z",
  "published": "2024-06-19T15:30:55Z",
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CVE-2021-47583 (GCVE-0-2021-47583)

Vulnerability from cvelistv5 – Published: 2024-06-19 14:53 – Updated: 2026-05-11 13:57

Title

media: mxl111sf: change mutex_init() location

Summary

In the Linux kernel, the following vulnerability has been resolved: media: mxl111sf: change mutex_init() location Syzbot reported, that mxl111sf_ctrl_msg() uses uninitialized mutex. The problem was in wrong mutex_init() location. Previous mutex_init(&state->msg_lock) call was in ->init() function, but dvb_usbv2_init() has this order of calls: dvb_usbv2_init() dvb_usbv2_adapter_init() dvb_usbv2_adapter_frontend_init() props->frontend_attach() props->init() Since mxl111sf_* devices call mxl111sf_ctrl_msg() in ->frontend_attach() internally we need to initialize state->msg_lock before frontend_attach(). To achieve it, ->probe() call added to all mxl111sf_* devices, which will simply initiaize mutex.

Severity

No CVSS data available.

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2024-06-24 18:10 UTC

Assigner

Linux mitre root

References

5 references

URL	Tags
https://git.kernel.org/stable/c/4b2d9600b31f9ba7a…
https://git.kernel.org/stable/c/96f182c9f48b98444…
https://git.kernel.org/stable/c/b99bdf127af91d539…
https://git.kernel.org/stable/c/8c6fdf62bfe1bc72b…
https://git.kernel.org/stable/c/44870a9e7a3c24acb…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 8572211842afc53c8450fb470f2b8d02ba7592e0 , < 4b2d9600b31f9ba7adbc9f3c54a068615d27b390 (git) Affected: 8572211842afc53c8450fb470f2b8d02ba7592e0 , < 96f182c9f48b984447741f054ec301fdc8517035 (git) Affected: 8572211842afc53c8450fb470f2b8d02ba7592e0 , < b99bdf127af91d53919e96292c05f737c45ea59a (git) Affected: 8572211842afc53c8450fb470f2b8d02ba7592e0 , < 8c6fdf62bfe1bc72bfceeaf832ef7499c7ed09ba (git) Affected: 8572211842afc53c8450fb470f2b8d02ba7592e0 , < 44870a9e7a3c24acbb3f888b2a7cc22c9bdf7e7f (git)
Linux	Linux	Affected: 3.7 Unaffected: 0 , < 3.7 (semver) Unaffected: 4.19.222 , ≤ 4.19.* (semver) Unaffected: 5.4.168 , ≤ 5.4.* (semver) Unaffected: 5.10.88 , ≤ 5.10.* (semver) Unaffected: 5.15.11 , ≤ 5.15.* (semver) Unaffected: 5.16 , ≤ * (original_commit_for_fix)

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JSON

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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.

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