Vulnerability-Lookup

GHSA-M68Q-HXMP-JH9G

Vulnerability from github – Published: 2025-10-01 12:30 – Updated: 2026-01-20 18:31

Details

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

iw_cxgb4: Fix potential NULL dereference in c4iw_fill_res_cm_id_entry()

This condition needs to match the previous "if (epcp->state == LISTEN) {" exactly to avoid a NULL dereference of either "listen_ep" or "ep". The problem is that "epcp" has been re-assigned so just testing "if (epcp->state == LISTEN) {" a second time is not sufficient.

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-2023-53476"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-476"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-10-01T12:15:49Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\niw_cxgb4: Fix potential NULL dereference in c4iw_fill_res_cm_id_entry()\n\nThis condition needs to match the previous \"if (epcp-\u003estate == LISTEN) {\"\nexactly to avoid a NULL dereference of either \"listen_ep\" or \"ep\". The\nproblem is that \"epcp\" has been re-assigned so just testing\n\"if (epcp-\u003estate == LISTEN) {\" a second time is not sufficient.",
  "id": "GHSA-m68q-hxmp-jh9g",
  "modified": "2026-01-20T18:31:52Z",
  "published": "2025-10-01T12:30:30Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-53476"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/24278dc380aab6a1aef0a75317f57ad4c2453cf6"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/4ca446b127c568b59cb8d9748b6f70499624bb18"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/76e0396313c79ecd0df44ee3c18745cfac52b3e6"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/dd55240e4364d64befcc575b0d33091881524f42"
    }
  ],
  "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-2023-53476 (GCVE-0-2023-53476)

Vulnerability from cvelistv5 – Published: 2025-10-01 11:42 – Updated: 2026-05-11 19:45

Title

iw_cxgb4: Fix potential NULL dereference in c4iw_fill_res_cm_id_entry()

Summary

In the Linux kernel, the following vulnerability has been resolved: iw_cxgb4: Fix potential NULL dereference in c4iw_fill_res_cm_id_entry() This condition needs to match the previous "if (epcp->state == LISTEN) {" exactly to avoid a NULL dereference of either "listen_ep" or "ep". The problem is that "epcp" has been re-assigned so just testing "if (epcp->state == LISTEN) {" a second time is not sufficient.

Severity

No CVSS data available.

Assigner

Linux mitre root

References

4 references

URL	Tags
https://git.kernel.org/stable/c/76e0396313c79ecd0…
https://git.kernel.org/stable/c/24278dc380aab6a1a…
https://git.kernel.org/stable/c/dd55240e4364d64be…
https://git.kernel.org/stable/c/4ca446b127c568b59…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 116aeb8873712ea559d26b0d9d88147af5c88db5 , < 76e0396313c79ecd0df44ee3c18745cfac52b3e6 (git) Affected: 116aeb8873712ea559d26b0d9d88147af5c88db5 , < 24278dc380aab6a1aef0a75317f57ad4c2453cf6 (git) Affected: 116aeb8873712ea559d26b0d9d88147af5c88db5 , < dd55240e4364d64befcc575b0d33091881524f42 (git) Affected: 116aeb8873712ea559d26b0d9d88147af5c88db5 , < 4ca446b127c568b59cb8d9748b6f70499624bb18 (git)
Linux	Linux	Affected: 4.18 Unaffected: 0 , < 4.18 (semver) Unaffected: 5.15.99 , ≤ 5.15.* (semver) Unaffected: 6.1.16 , ≤ 6.1.* (semver) Unaffected: 6.2.3 , ≤ 6.2.* (semver) Unaffected: 6.3 , ≤ * (original_commit_for_fix)

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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/infiniband/hw/cxgb4/restrack.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "76e0396313c79ecd0df44ee3c18745cfac52b3e6",
              "status": "affected",
              "version": "116aeb8873712ea559d26b0d9d88147af5c88db5",
              "versionType": "git"
            },
            {
              "lessThan": "24278dc380aab6a1aef0a75317f57ad4c2453cf6",
              "status": "affected",
              "version": "116aeb8873712ea559d26b0d9d88147af5c88db5",
              "versionType": "git"
            },
            {
              "lessThan": "dd55240e4364d64befcc575b0d33091881524f42",
              "status": "affected",
              "version": "116aeb8873712ea559d26b0d9d88147af5c88db5",
              "versionType": "git"
            },
            {
              "lessThan": "4ca446b127c568b59cb8d9748b6f70499624bb18",
              "status": "affected",
              "version": "116aeb8873712ea559d26b0d9d88147af5c88db5",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/infiniband/hw/cxgb4/restrack.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "4.18"
            },
            {
              "lessThan": "4.18",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.99",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.16",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.2.*",
              "status": "unaffected",
              "version": "6.2.3",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.3",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.15.99",
                  "versionStartIncluding": "4.18",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.16",
                  "versionStartIncluding": "4.18",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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                  "versionStartIncluding": "4.18",
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                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.3",
                  "versionStartIncluding": "4.18",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\niw_cxgb4: Fix potential NULL dereference in c4iw_fill_res_cm_id_entry()\n\nThis condition needs to match the previous \"if (epcp-\u003estate == LISTEN) {\"\nexactly to avoid a NULL dereference of either \"listen_ep\" or \"ep\". The\nproblem is that \"epcp\" has been re-assigned so just testing\n\"if (epcp-\u003estate == LISTEN) {\" a second time is not sufficient."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-11T19:45:43.579Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
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          "url": "https://git.kernel.org/stable/c/76e0396313c79ecd0df44ee3c18745cfac52b3e6"
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        },
        {
          "url": "https://git.kernel.org/stable/c/4ca446b127c568b59cb8d9748b6f70499624bb18"
        }
      ],
      "title": "iw_cxgb4: Fix potential NULL dereference in c4iw_fill_res_cm_id_entry()",
      "x_generator": {
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  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2023-53476",
    "datePublished": "2025-10-01T11:42:45.499Z",
    "dateReserved": "2025-10-01T11:39:39.401Z",
    "dateUpdated": "2026-05-11T19:45:43.579Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "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.

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.
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