Vulnerability-Lookup

GHSA-MJ94-G7GV-R97M

Vulnerability from github – Published: 2025-09-18 18:30 – Updated: 2026-02-06 18:30

Details

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

fbdev: fbcon: release buffer when fbcon_do_set_font() failed

syzbot is reporting memory leak at fbcon_do_set_font() [1], for commit a5a923038d70 ("fbdev: fbcon: Properly revert changes when vc_resize() failed") missed that the buffer might be newly allocated by fbcon_set_font().

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-2022-50404"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-401"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-09-18T16:15:43Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nfbdev: fbcon: release buffer when fbcon_do_set_font() failed\n\nsyzbot is reporting memory leak at fbcon_do_set_font() [1], for\ncommit a5a923038d70 (\"fbdev: fbcon: Properly revert changes when\nvc_resize() failed\") missed that the buffer might be newly allocated\nby fbcon_set_font().",
  "id": "GHSA-mj94-g7gv-r97m",
  "modified": "2026-02-06T18:30:27Z",
  "published": "2025-09-18T18:30:26Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-50404"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/06926607b9fddf7ce8017493899ce6eb7e79a123"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/3c3bfb8586f848317ceba5d777e11204ba3e5758"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/5a341810a22e51c3a7a108f7896b5fd58d44d127"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/88ec6d11052da527eb9268831e7a9bc5bbad02f6"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a609bfc1e644a8467cb31945ed1488374ebdc013"
    }
  ],
  "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-2022-50404 (GCVE-0-2022-50404)

Vulnerability from cvelistv5 – Published: 2025-09-18 16:03 – Updated: 2026-05-23 15:24

Title

fbdev: fbcon: release buffer when fbcon_do_set_font() failed

Summary

In the Linux kernel, the following vulnerability has been resolved: fbdev: fbcon: release buffer when fbcon_do_set_font() failed syzbot is reporting memory leak at fbcon_do_set_font() [1], for commit a5a923038d70 ("fbdev: fbcon: Properly revert changes when vc_resize() failed") missed that the buffer might be newly allocated by fbcon_set_font().

Severity

5.5 (Medium)


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

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-01-14 19:07 UTC

CWE

CWE-401 - Missing Release of Memory after Effective Lifetime

Assigner

Linux CNA under the mitre root

CNA scorecard D 53/100 over 7033 records in the last 180 days details

References

5 references

URL	Tags
https://git.kernel.org/stable/c/5a341810a22e51c3a…
https://git.kernel.org/stable/c/88ec6d11052da527e…
https://git.kernel.org/stable/c/06926607b9fddf7ce…
https://git.kernel.org/stable/c/a609bfc1e644a8467…
https://git.kernel.org/stable/c/3c3bfb8586f848317…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 868749a7456dc48e93887a8474194e2ee6d6c21f , < 5a341810a22e51c3a7a108f7896b5fd58d44d127 (git) Affected: ebd6f886aa2447fcfcdce5450c9e1028e1d681bb , < 88ec6d11052da527eb9268831e7a9bc5bbad02f6 (git) Affected: a5a923038d70d2d4a86cb4e3f32625a5ee6e7e24 , < 06926607b9fddf7ce8017493899ce6eb7e79a123 (git) Affected: a5a923038d70d2d4a86cb4e3f32625a5ee6e7e24 , < a609bfc1e644a8467cb31945ed1488374ebdc013 (git) Affected: a5a923038d70d2d4a86cb4e3f32625a5ee6e7e24 , < 3c3bfb8586f848317ceba5d777e11204ba3e5758 (git) Affected: f08ccb792d3eaf1dc62d8cbf6a30d6522329f660 (git) Affected: 5.15.64 , < 5.15.86 (semver) Affected: 5.19.6 , < 5.20 (semver)
Linux	Linux	Affected: 6.0 Unaffected: 0 , < 6.0 (semver) Unaffected: 5.15.86 , ≤ 5.15.* (semver) Unaffected: 6.0.16 , ≤ 6.0.* (semver) Unaffected: 6.1.2 , ≤ 6.1.* (semver) Unaffected: 6.2 , ≤ * (original_commit_for_fix)

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JSON

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            "cvssV3_1": {
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              "confidentialityImpact": "NONE",
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              "userInteraction": "NONE",
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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.

Vulnerability timeline

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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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