Vulnerability-Lookup

GHSA-GJ23-C8MG-CV5R

Vulnerability from github – Published: 2026-01-23 18:31 – Updated: 2026-01-23 18:31

Details

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

wifi: avoid kernel-infoleak from struct iw_point

struct iw_point has a 32bit hole on 64bit arches.

struct iw_point { void __user pointer; / Pointer to the data (in user space) / __u16 length; / number of fields or size in bytes / __u16 flags; / Optional params */ };

Make sure to zero the structure to avoid disclosing 32bits of kernel data to user space.

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{
  "affected": [],
  "aliases": [
    "CVE-2026-22978"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-01-23T16:15:53Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: avoid kernel-infoleak from struct iw_point\n\nstruct iw_point has a 32bit hole on 64bit arches.\n\nstruct iw_point {\n  void __user   *pointer;       /* Pointer to the data  (in user space) */\n  __u16         length;         /* number of fields or size in bytes */\n  __u16         flags;          /* Optional params */\n};\n\nMake sure to zero the structure to avoid disclosing 32bits of kernel data\nto user space.",
  "id": "GHSA-gj23-c8mg-cv5r",
  "modified": "2026-01-23T18:31:28Z",
  "published": "2026-01-23T18:31:28Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-22978"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/024f71a57d563fbe162e528c8bf2d27e9cac7c7b"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/21cbf883d073abbfe09e3924466aa5e0449e7261"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/442ceac0393185e9982323f6682a52a53e8462b1"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a3827e310b5a73535646ef4a552d53b3c8bf74f6"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d21ec867d84c9f3a9845d7d8c90c9ce35dbe48f8"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d943b5f592767b107ba8c12a902f17431350378c"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e3c35177103ead4658b8a62f41e3080d45885464"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

CVE-2026-22978 (GCVE-0-2026-22978)

Vulnerability from cvelistv5 – Published: 2026-01-23 15:24 – Updated: 2026-01-23 15:24

Title

wifi: avoid kernel-infoleak from struct iw_point

Summary

In the Linux kernel, the following vulnerability has been resolved: wifi: avoid kernel-infoleak from struct iw_point struct iw_point has a 32bit hole on 64bit arches. struct iw_point { void __user *pointer; /* Pointer to the data (in user space) */ __u16 length; /* number of fields or size in bytes */ __u16 flags; /* Optional params */ }; Make sure to zero the structure to avoid disclosing 32bits of kernel data to user space.

Severity ?

No CVSS data available.

Assigner

Linux

References

URL

Tags

	https://git.kernel.org/stable/c/d943b5f592767b107…
	https://git.kernel.org/stable/c/a3827e310b5a73535…
	https://git.kernel.org/stable/c/442ceac0393185e99…
	https://git.kernel.org/stable/c/d21ec867d84c9f3a9…
	https://git.kernel.org/stable/c/024f71a57d563fbe1…
	https://git.kernel.org/stable/c/e3c35177103ead465…
	https://git.kernel.org/stable/c/21cbf883d073abbfe…

Impacted products

Vendor

Product

Version

Linux

Affected: 87de87d5e47f94b4ea647a5bd1bc8dc1f7930db4 , < d943b5f592767b107ba8c12a902f17431350378c (git)
Affected: 87de87d5e47f94b4ea647a5bd1bc8dc1f7930db4 , < a3827e310b5a73535646ef4a552d53b3c8bf74f6 (git)
Affected: 87de87d5e47f94b4ea647a5bd1bc8dc1f7930db4 , < 442ceac0393185e9982323f6682a52a53e8462b1 (git)
Affected: 87de87d5e47f94b4ea647a5bd1bc8dc1f7930db4 , < d21ec867d84c9f3a9845d7d8c90c9ce35dbe48f8 (git)
Affected: 87de87d5e47f94b4ea647a5bd1bc8dc1f7930db4 , < 024f71a57d563fbe162e528c8bf2d27e9cac7c7b (git)
Affected: 87de87d5e47f94b4ea647a5bd1bc8dc1f7930db4 , < e3c35177103ead4658b8a62f41e3080d45885464 (git)
Affected: 87de87d5e47f94b4ea647a5bd1bc8dc1f7930db4 , < 21cbf883d073abbfe09e3924466aa5e0449e7261 (git)

Linux

Affected: 2.6.27
Unaffected: 0 , < 2.6.27 (semver)
Unaffected: 5.10.248 , ≤ 5.10.* (semver)
Unaffected: 5.15.198 , ≤ 5.15.* (semver)
Unaffected: 6.1.161 , ≤ 6.1.* (semver)
Unaffected: 6.6.121 , ≤ 6.6.* (semver)
Unaffected: 6.12.66 , ≤ 6.12.* (semver)
Unaffected: 6.18.6 , ≤ 6.18.* (semver)
Unaffected: 6.19-rc5 , ≤ * (original_commit_for_fix)

Show details on NVD website

JSON

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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "net/wireless/wext-core.c",
            "net/wireless/wext-priv.c"
          ],
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          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "d943b5f592767b107ba8c12a902f17431350378c",
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              "version": "87de87d5e47f94b4ea647a5bd1bc8dc1f7930db4",
              "versionType": "git"
            },
            {
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              "status": "affected",
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              "versionType": "git"
            },
            {
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              "status": "affected",
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            },
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              "status": "affected",
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              "status": "affected",
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          ]
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        {
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          ],
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          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "2.6.27"
            },
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              "status": "unaffected",
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              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.248",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.198",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.161",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.121",
              "versionType": "semver"
            },
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              "status": "unaffected",
              "version": "6.12.66",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.6",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.19-rc5",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.10.248",
                  "versionStartIncluding": "2.6.27",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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                  "versionStartIncluding": "2.6.27",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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                  "versionStartIncluding": "2.6.27",
                  "vulnerable": true
                },
                {
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                }
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              "negate": false,
              "operator": "OR"
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        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: avoid kernel-infoleak from struct iw_point\n\nstruct iw_point has a 32bit hole on 64bit arches.\n\nstruct iw_point {\n  void __user   *pointer;       /* Pointer to the data  (in user space) */\n  __u16         length;         /* number of fields or size in bytes */\n  __u16         flags;          /* Optional params */\n};\n\nMake sure to zero the structure to avoid disclosing 32bits of kernel data\nto user space."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-01-23T15:24:00.482Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/d943b5f592767b107ba8c12a902f17431350378c"
        },
        {
          "url": "https://git.kernel.org/stable/c/a3827e310b5a73535646ef4a552d53b3c8bf74f6"
        },
        {
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        },
        {
          "url": "https://git.kernel.org/stable/c/21cbf883d073abbfe09e3924466aa5e0449e7261"
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      "title": "wifi: avoid kernel-infoleak from struct iw_point",
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        "engine": "bippy-1.2.0"
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  "cveMetadata": {
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    "assignerShortName": "Linux",
    "cveId": "CVE-2026-22978",
    "datePublished": "2026-01-23T15:24:00.482Z",
    "dateReserved": "2026-01-13T15:37:45.936Z",
    "dateUpdated": "2026-01-23T15:24:00.482Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date

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.

Action not permitted

GHSA-GJ23-C8MG-CV5R

CVE-2026-22978 (GCVE-0-2026-22978)

Tags

Sightings

Nomenclature