CVE-2024-56539 (GCVE-0-2024-56539)

Vulnerability from cvelistv5 – Published: 2024-12-27 14:11 – Updated: 2026-05-11 20:54
VLAI
Title
wifi: mwifiex: Fix memcpy() field-spanning write warning in mwifiex_config_scan()
Summary
In the Linux kernel, the following vulnerability has been resolved: wifi: mwifiex: Fix memcpy() field-spanning write warning in mwifiex_config_scan() Replace one-element array with a flexible-array member in `struct mwifiex_ie_types_wildcard_ssid_params` to fix the following warning on a MT8173 Chromebook (mt8173-elm-hana): [ 356.775250] ------------[ cut here ]------------ [ 356.784543] memcpy: detected field-spanning write (size 6) of single field "wildcard_ssid_tlv->ssid" at drivers/net/wireless/marvell/mwifiex/scan.c:904 (size 1) [ 356.813403] WARNING: CPU: 3 PID: 742 at drivers/net/wireless/marvell/mwifiex/scan.c:904 mwifiex_scan_networks+0x4fc/0xf28 [mwifiex] The "(size 6)" above is exactly the length of the SSID of the network this device was connected to. The source of the warning looks like: ssid_len = user_scan_in->ssid_list[i].ssid_len; [...] memcpy(wildcard_ssid_tlv->ssid, user_scan_in->ssid_list[i].ssid, ssid_len); There is a #define WILDCARD_SSID_TLV_MAX_SIZE that uses sizeof() on this struct, but it already didn't account for the size of the one-element array, so it doesn't need to be changed.
Severity
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Assigner
Linux CNA under the mitre root
CNA scorecard D 53/100 over 7033 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 5e6e3a92b9a4c9416b17f468fa5c7fa2233b8b4e , < a09760c513ae0f98c7082a1deace7fb6284ee866 (git)
Affected: 5e6e3a92b9a4c9416b17f468fa5c7fa2233b8b4e , < 1de0ca1d7320a645ba2ee5954f64be08935b002a (git)
Affected: 5e6e3a92b9a4c9416b17f468fa5c7fa2233b8b4e , < 5fa329c44e1e635da2541eab28b6cdb8464fc8d1 (git)
Affected: 5e6e3a92b9a4c9416b17f468fa5c7fa2233b8b4e , < 581261b2d6fdb4237b24fa13f5a5f87bf2861f2c (git)
Affected: 5e6e3a92b9a4c9416b17f468fa5c7fa2233b8b4e , < b466746cfb6be43f9a1457bbee52ade397fb23ea (git)
Affected: 5e6e3a92b9a4c9416b17f468fa5c7fa2233b8b4e , < c4698ef8c42e02782604bf4f8a489dbf6b0c1365 (git)
Affected: 5e6e3a92b9a4c9416b17f468fa5c7fa2233b8b4e , < e2de22e4b6213371d9e76f74a10ce817572a8d74 (git)
Affected: 5e6e3a92b9a4c9416b17f468fa5c7fa2233b8b4e , < d7774910c5583e61c5fe2571280366624ef48036 (git)
Affected: 5e6e3a92b9a4c9416b17f468fa5c7fa2233b8b4e , < d241a139c2e9f8a479f25c75ebd5391e6a448500 (git)
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Linux Linux Affected: 3.0
Unaffected: 0 , < 3.0 (semver)
Unaffected: 4.19.325 , ≤ 4.19.* (semver)
Unaffected: 5.4.287 , ≤ 5.4.* (semver)
Unaffected: 5.10.231 , ≤ 5.10.* (semver)
Unaffected: 5.15.174 , ≤ 5.15.* (semver)
Unaffected: 6.1.120 , ≤ 6.1.* (semver)
Unaffected: 6.6.64 , ≤ 6.6.* (semver)
Unaffected: 6.11.11 , ≤ 6.11.* (semver)
Unaffected: 6.12.2 , ≤ 6.12.* (semver)
Unaffected: 6.13 , ≤ * (original_commit_for_fix)
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          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mwifiex: Fix memcpy() field-spanning write warning in mwifiex_config_scan()\n\nReplace one-element array with a flexible-array member in `struct\nmwifiex_ie_types_wildcard_ssid_params` to fix the following warning\non a MT8173 Chromebook (mt8173-elm-hana):\n\n[  356.775250] ------------[ cut here ]------------\n[  356.784543] memcpy: detected field-spanning write (size 6) of single field \"wildcard_ssid_tlv-\u003essid\" at drivers/net/wireless/marvell/mwifiex/scan.c:904 (size 1)\n[  356.813403] WARNING: CPU: 3 PID: 742 at drivers/net/wireless/marvell/mwifiex/scan.c:904 mwifiex_scan_networks+0x4fc/0xf28 [mwifiex]\n\nThe \"(size 6)\" above is exactly the length of the SSID of the network\nthis device was connected to. The source of the warning looks like:\n\n    ssid_len = user_scan_in-\u003essid_list[i].ssid_len;\n    [...]\n    memcpy(wildcard_ssid_tlv-\u003essid,\n           user_scan_in-\u003essid_list[i].ssid, ssid_len);\n\nThere is a #define WILDCARD_SSID_TLV_MAX_SIZE that uses sizeof() on this\nstruct, but it already didn\u0027t account for the size of the one-element\narray, so it doesn\u0027t need to be changed."
        }
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        {
          "url": "https://git.kernel.org/stable/c/d241a139c2e9f8a479f25c75ebd5391e6a448500"
        }
      ],
      "title": "wifi: mwifiex: Fix memcpy() field-spanning write warning in mwifiex_config_scan()",
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    "cveId": "CVE-2024-56539",
    "datePublished": "2024-12-27T14:11:21.487Z",
    "dateReserved": "2024-12-27T14:03:05.987Z",
    "dateUpdated": "2026-05-11T20:54:12.871Z",
    "state": "PUBLISHED"
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      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mwifiex: Fix memcpy() field-spanning write warning in mwifiex_config_scan()\n\nReplace one-element array with a flexible-array member in `struct\nmwifiex_ie_types_wildcard_ssid_params` to fix the following warning\non a MT8173 Chromebook (mt8173-elm-hana):\n\n[  356.775250] ------------[ cut here ]------------\n[  356.784543] memcpy: detected field-spanning write (size 6) of single field \"wildcard_ssid_tlv-\u003essid\" at drivers/net/wireless/marvell/mwifiex/scan.c:904 (size 1)\n[  356.813403] WARNING: CPU: 3 PID: 742 at drivers/net/wireless/marvell/mwifiex/scan.c:904 mwifiex_scan_networks+0x4fc/0xf28 [mwifiex]\n\nThe \"(size 6)\" above is exactly the length of the SSID of the network\nthis device was connected to. The source of the warning looks like:\n\n    ssid_len = user_scan_in-\u003essid_list[i].ssid_len;\n    [...]\n    memcpy(wildcard_ssid_tlv-\u003essid,\n           user_scan_in-\u003essid_list[i].ssid, ssid_len);\n\nThere is a #define WILDCARD_SSID_TLV_MAX_SIZE that uses sizeof() on this\nstruct, but it already didn\u0027t account for the size of the one-element\narray, so it doesn\u0027t need to be changed."
        },
        {
          "lang": "es",
          "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: wifi: mwifiex: Se corrige la advertencia de escritura que abarca el campo memcpy() en mwifiex_config_scan() Reemplace la matriz de un elemento con un miembro de matriz flexible en `struct mwifiex_ie_types_wildcard_ssid_params` para corregir la siguiente advertencia en una Chromebook MT8173 (mt8173-elm-hana): [ 356.775250] ------------[ cortar aqu\u00ed ]------------ [ 356.784543] memcpy: se detect\u00f3 escritura que abarca el campo (tama\u00f1o 6) del campo \u00fanico \"wildcard_ssid_tlv-\u0026gt;ssid\" en drivers/net/wireless/marvell/mwifiex/scan.c:904 (tama\u00f1o 1) [ 356.813403] ADVERTENCIA: CPU: 3 PID: 742 en drivers/net/wireless/marvell/mwifiex/scan.c:904 mwifiex_scan_networks+0x4fc/0xf28 [mwifiex] El \"(tama\u00f1o 6)\" anterior es exactamente la longitud del SSID de la red a la que estaba conectado este dispositivo. La fuente de la advertencia se ve as\u00ed: ssid_len = user_scan_in-\u0026gt;ssid_list[i].ssid_len; [...] memcpy(wildcard_ssid_tlv-\u0026gt;ssid, user_scan_in-\u0026gt;ssid_list[i].ssid, ssid_len); Hay un #define WILDCARD_SSID_TLV_MAX_SIZE que usa sizeof() en esta estructura, pero ya no ten\u00eda en cuenta el tama\u00f1o de la matriz de un elemento, por lo que no es necesario cambiarlo."
        }
      ],
      "id": "CVE-2024-56539",
      "lastModified": "2024-12-27T14:15:33.530",
      "published": "2024-12-27T14:15:33.530",
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              {
                "defaultStatus": "affected",
                "product": "Linux",
                "programFiles": [
                  "drivers/net/wireless/marvell/mwifiex/fw.h"
                ],
                "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                "vendor": "Linux",
                "versions": [
                  {
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                    "version": "3.0"
                  },
                  {
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                    "status": "unaffected",
                    "version": "0",
                    "versionType": "semver"
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                    "version": "4.19.325",
                    "versionType": "semver"
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                    "version": "5.4.287",
                    "versionType": "semver"
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                    "version": "5.10.231",
                    "versionType": "semver"
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                    "status": "unaffected",
                    "version": "5.15.174",
                    "versionType": "semver"
                  },
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                    "lessThanOrEqual": "6.1.*",
                    "status": "unaffected",
                    "version": "6.1.120",
                    "versionType": "semver"
                  },
                  {
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                    "status": "unaffected",
                    "version": "6.6.64",
                    "versionType": "semver"
                  },
                  {
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                    "status": "unaffected",
                    "version": "6.11.11",
                    "versionType": "semver"
                  },
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                    "status": "unaffected",
                    "version": "6.12.2",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "*",
                    "status": "unaffected",
                    "version": "6.13",
                    "versionType": "original_commit_for_fix"
                  }
                ]
              }
            ],
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
          }
        ],
        "configurations": [
          {
            "nodes": [
              {
                "cpeMatch": [
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        ],
        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mwifiex: Fix memcpy() field-spanning write warning in mwifiex_config_scan()\n\nReplace one-element array with a flexible-array member in `struct\nmwifiex_ie_types_wildcard_ssid_params` to fix the following warning\non a MT8173 Chromebook (mt8173-elm-hana):\n\n[  356.775250] ------------[ cut here ]------------\n[  356.784543] memcpy: detected field-spanning write (size 6) of single field \"wildcard_ssid_tlv-\u003essid\" at drivers/net/wireless/marvell/mwifiex/scan.c:904 (size 1)\n[  356.813403] WARNING: CPU: 3 PID: 742 at drivers/net/wireless/marvell/mwifiex/scan.c:904 mwifiex_scan_networks+0x4fc/0xf28 [mwifiex]\n\nThe \"(size 6)\" above is exactly the length of the SSID of the network\nthis device was connected to. The source of the warning looks like:\n\n    ssid_len = user_scan_in-\u003essid_list[i].ssid_len;\n    [...]\n    memcpy(wildcard_ssid_tlv-\u003essid,\n           user_scan_in-\u003essid_list[i].ssid, ssid_len);\n\nThere is a #define WILDCARD_SSID_TLV_MAX_SIZE that uses sizeof() on this\nstruct, but it already didn\u0027t account for the size of the one-element\narray, so it doesn\u0027t need to be changed."
          },
          {
            "lang": "es",
            "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: wifi: mwifiex: Se corrige la advertencia de escritura que abarca el campo memcpy() en mwifiex_config_scan() Reemplace la matriz de un elemento con un miembro de matriz flexible en `struct mwifiex_ie_types_wildcard_ssid_params` para corregir la siguiente advertencia en una Chromebook MT8173 (mt8173-elm-hana): [ 356.775250] ------------[ cortar aqu\u00ed ]------------ [ 356.784543] memcpy: se detect\u00f3 escritura que abarca el campo (tama\u00f1o 6) del campo \u00fanico \"wildcard_ssid_tlv-\u0026gt;ssid\" en drivers/net/wireless/marvell/mwifiex/scan.c:904 (tama\u00f1o 1) [ 356.813403] ADVERTENCIA: CPU: 3 PID: 742 en drivers/net/wireless/marvell/mwifiex/scan.c:904 mwifiex_scan_networks+0x4fc/0xf28 [mwifiex] El \"(tama\u00f1o 6)\" anterior es exactamente la longitud del SSID de la red a la que estaba conectado este dispositivo. La fuente de la advertencia se ve as\u00ed: ssid_len = user_scan_in-\u0026gt;ssid_list[i].ssid_len; [...] memcpy(wildcard_ssid_tlv-\u0026gt;ssid, user_scan_in-\u0026gt;ssid_list[i].ssid, ssid_len); Hay un #define WILDCARD_SSID_TLV_MAX_SIZE que usa sizeof() en esta estructura, pero ya no ten\u00eda en cuenta el tama\u00f1o de la matriz de un elemento, por lo que no es necesario cambiarlo."
          }
        ],
        "id": "CVE-2024-56539",
        "lastModified": "2026-06-17T08:12:20.500",
        "metrics": {
          "cvssMetricV31": [
            {
              "cvssData": {
                "attackComplexity": "LOW",
                "attackVector": "LOCAL",
                "availabilityImpact": "HIGH",
                "baseScore": 5.5,
                "baseSeverity": "MEDIUM",
                "confidentialityImpact": "NONE",
                "integrityImpact": "NONE",
                "privilegesRequired": "LOW",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
                "version": "3.1"
              },
              "exploitabilityScore": 1.8,
              "impactScore": 3.6,
              "source": "nvd@nist.gov",
              "type": "Primary"
            }
          ]
        },
        "published": "2024-12-27T14:15:33.530",
        "references": [
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/1de0ca1d7320a645ba2ee5954f64be08935b002a"
          },
          {
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          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "https://lists.debian.org/debian-lts-announce/2025/03/msg00001.html"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "https://lists.debian.org/debian-lts-announce/2025/03/msg00002.html"
          }
        ],
        "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "vulnStatus": "Modified",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "NVD-CWE-noinfo"
              }
            ],
            "source": "nvd@nist.gov",
            "type": "Primary"
          }
        ]
      }
    },
    "redhat_vex": {
      "aggregate_severity": "None",
      "current_release_date": "2025-11-25T08:50:03+00:00",
      "cve": "CVE-2024-56539",
      "id": "CVE-2024-56539",
      "initial_release_date": "2024-12-27T00:00:00+00:00",
      "product_status:known_not_affected": "198",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: wifi: mwifiex: Fix memcpy() field-spanning write warning in mwifiex_config_scan()",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2024/cve-2024-56539.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "important",
      "current_release_date": "2026-10-10T02:42:50Z",
      "cve": "CVE-2024-56539",
      "id": "CVE-2024-56539",
      "initial_release_date": "2024-12-28T03:49:15Z",
      "product_status:known_affected": "519",
      "product_status:known_not_affected": "73",
      "product_status:recommended": "758",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2024-56539",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/2024/cve-2024-56539.json",
      "version": "94"
    }
  }
}



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Sightings

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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.
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  • 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

Sightings and recorded dates, grouped by day · UTC

JSON
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Following the VTEM framework (Black Hat USA 2015), time to patch starts when the vendor or a coordinator was informed, total time to patch at discovery, and disclosure to patch at public disclosure; vendor response time runs from the report to its acknowledgement. Time to exploit and time unpatched start at the earliest discovery or report, falling back to public disclosure. Unpatched time ends at the first recorded patch, or the calculation time when no patch is recorded. Exploitation to patch shows the interval between those two events; a published proof of concept is a public exploit, not exploitation.

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