Vulnerability-Lookup

GHSA-FWV7-HFPV-34GJ

Vulnerability from github – Published: 2026-09-17 18:31 – Updated: 2026-09-17 18:31

Details

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

m68k: nfcon: Do not call console_is_registered() in nfcon_device()

Since 7c2af0f634f1 ("tty: tty_io: use console_list_lock for list synchronization") show_cons_active() calls the .device() method under the console_list_lock, but console_is_registered() tries to acquire console_list_lock as well, causing a deadlock. It should not be necessary to check console_is_registered() here since the function should not be called in the fist place when the console is not registered.

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{
  "affected": [],
  "aliases": [
    "CVE-2026-90158"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-09-17T17:17:08Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nm68k: nfcon: Do not call console_is_registered() in nfcon_device()\n\nSince 7c2af0f634f1 (\"tty: tty_io: use console_list_lock for list\nsynchronization\") show_cons_active() calls the .device() method under\nthe console_list_lock, but console_is_registered() tries to acquire\nconsole_list_lock as well, causing a deadlock.  It should not be\nnecessary to check console_is_registered() here since the function\nshould not be called in the fist place when the console is not\nregistered.",
  "id": "GHSA-fwv7-hfpv-34gj",
  "modified": "2026-09-17T18:31:53Z",
  "published": "2026-09-17T18:31:53Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-90158"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/2f8e3cad53b5c36ab0ed5d3195bfc55c59ea61a5"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/7d3f15a664d115584fc177b5f2cfbdb3e5a50d60"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/be98f92fc244688a6bdecbc834cf2cd243056d9d"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d73441232f1f067eb659e94447b1353c16609711"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e5e11274b5512e24a346ed83f8dd85e3389d2f4b"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

CVE-2026-90158 (GCVE-0-2026-90158)

Vulnerability from cvelistv5 – Published: 2026-09-17 16:06 – Updated: 2026-09-17 16:06

Title

m68k: nfcon: Do not call console_is_registered() in nfcon_device()

Summary

In the Linux kernel, the following vulnerability has been resolved: m68k: nfcon: Do not call console_is_registered() in nfcon_device() Since 7c2af0f634f1 ("tty: tty_io: use console_list_lock for list synchronization") show_cons_active() calls the .device() method under the console_list_lock, but console_is_registered() tries to acquire console_list_lock as well, causing a deadlock. It should not be necessary to check console_is_registered() here since the function should not be called in the fist place when the console is not registered.

Severity

No CVSS data available.

Assigner

Linux mitre root

References

5 references

URL	Tags
https://git.kernel.org/stable/c/7d3f15a664d115584…
https://git.kernel.org/stable/c/e5e11274b5512e24a…
https://git.kernel.org/stable/c/be98f92fc244688a6…
https://git.kernel.org/stable/c/d73441232f1f067eb…
https://git.kernel.org/stable/c/2f8e3cad53b5c36ab…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 7c2af0f634f1bc761ca827310dc7e8e586af502f , < 7d3f15a664d115584fc177b5f2cfbdb3e5a50d60 (git) Affected: 7c2af0f634f1bc761ca827310dc7e8e586af502f , < e5e11274b5512e24a346ed83f8dd85e3389d2f4b (git) Affected: 7c2af0f634f1bc761ca827310dc7e8e586af502f , < be98f92fc244688a6bdecbc834cf2cd243056d9d (git) Affected: 7c2af0f634f1bc761ca827310dc7e8e586af502f , < d73441232f1f067eb659e94447b1353c16609711 (git) Affected: 7c2af0f634f1bc761ca827310dc7e8e586af502f , < 2f8e3cad53b5c36ab0ed5d3195bfc55c59ea61a5 (git)
Linux	Linux	Affected: 6.2 Unaffected: 0 , < 6.2 (semver) Unaffected: 6.6.157 , ≤ 6.6.* (semver) Unaffected: 6.12.110 , ≤ 6.12.* (semver) Unaffected: 6.18.52 , ≤ 6.18.* (semver) Unaffected: 7.2.6 , ≤ 7.2.* (semver) Unaffected: 7.3-rc1 , ≤ * (original_commit_for_fix)

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{
  "containers": {
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      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "arch/m68k/emu/nfcon.c"
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          "vendor": "Linux",
          "versions": [
            {
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              "versionType": "git"
            },
            {
              "lessThan": "e5e11274b5512e24a346ed83f8dd85e3389d2f4b",
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              "version": "7c2af0f634f1bc761ca827310dc7e8e586af502f",
              "versionType": "git"
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              "versionType": "git"
            },
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              "versionType": "git"
            },
            {
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              "status": "affected",
              "version": "7c2af0f634f1bc761ca827310dc7e8e586af502f",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
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            "arch/m68k/emu/nfcon.c"
          ],
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          "vendor": "Linux",
          "versions": [
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              "version": "6.2"
            },
            {
              "lessThan": "6.2",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
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              "status": "unaffected",
              "version": "6.6.157",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.110",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.52",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.2.*",
              "status": "unaffected",
              "version": "7.2.6",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.3-rc1",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.157",
                  "versionStartIncluding": "6.2",
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                },
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        }
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        "shortName": "Linux"
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          "url": "https://git.kernel.org/stable/c/2f8e3cad53b5c36ab0ed5d3195bfc55c59ea61a5"
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      ],
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    "datePublished": "2026-09-17T16:06:49.735Z",
    "dateReserved": "2026-09-11T19:38:34.790Z",
    "dateUpdated": "2026-09-17T16:06:49.735Z",
    "state": "PUBLISHED"
  },
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  "dataVersion": "5.2"
}

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.

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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GHSA-FWV7-HFPV-34GJ

CVE-2026-90158 (GCVE-0-2026-90158)

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