CVE-2025-39952 (GCVE-0-2025-39952)
Vulnerability from cvelistv5
Published
2025-10-04 07:31
Modified
2025-10-04 07:31
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: wifi: wilc1000: avoid buffer overflow in WID string configuration Fix the following copy overflow warning identified by Smatch checker. drivers/net/wireless/microchip/wilc1000/wlan_cfg.c:184 wilc_wlan_parse_response_frame() error: '__memcpy()' 'cfg->s[i]->str' copy overflow (512 vs 65537) This patch introduces size check before accessing the memory buffer. The checks are base on the WID type of received data from the firmware. For WID string configuration, the size limit is determined by individual element size in 'struct wilc_cfg_str_vals' that is maintained in 'len' field of 'struct wilc_cfg_str'.
References
Impacted products
Vendor Product Version
Linux Linux Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/wireless/microchip/wilc1000/wlan_cfg.c",
            "drivers/net/wireless/microchip/wilc1000/wlan_cfg.h"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "6085291a1a5865d4ad70f0e5812d524ebd5d1711",
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              "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
              "versionType": "git"
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              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/wireless/microchip/wilc1000/wlan_cfg.c",
            "drivers/net/wireless/microchip/wilc1000/wlan_cfg.h"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.108",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.49",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.16.*",
              "status": "unaffected",
              "version": "6.16.9",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.17",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.108",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.49",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.16.9",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.17",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: wilc1000: avoid buffer overflow in WID string configuration\n\nFix the following copy overflow warning identified by Smatch checker.\n\n drivers/net/wireless/microchip/wilc1000/wlan_cfg.c:184 wilc_wlan_parse_response_frame()\n        error: \u0027__memcpy()\u0027 \u0027cfg-\u003es[i]-\u003estr\u0027 copy overflow (512 vs 65537)\n\nThis patch introduces size check before accessing the memory buffer.\nThe checks are base on the WID type of received data from the firmware.\nFor WID string configuration, the size limit is determined by individual\nelement size in \u0027struct wilc_cfg_str_vals\u0027 that is maintained in \u0027len\u0027 field\nof \u0027struct wilc_cfg_str\u0027."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-10-04T07:31:12.445Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/6085291a1a5865d4ad70f0e5812d524ebd5d1711"
        },
        {
          "url": "https://git.kernel.org/stable/c/2203ef417044b10a8563ade6a17c74183745d72e"
        },
        {
          "url": "https://git.kernel.org/stable/c/ae50f8562306a7ea1cf3c9722f97ee244f974729"
        },
        {
          "url": "https://git.kernel.org/stable/c/fe9e4d0c39311d0f97b024147a0d155333f388b5"
        }
      ],
      "title": "wifi: wilc1000: avoid buffer overflow in WID string configuration",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2025-39952",
    "datePublished": "2025-10-04T07:31:12.445Z",
    "dateReserved": "2025-04-16T07:20:57.148Z",
    "dateUpdated": "2025-10-04T07:31:12.445Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2025-39952\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-10-04T08:15:48.507\",\"lastModified\":\"2025-10-06T14:56:47.823\",\"vulnStatus\":\"Awaiting Analysis\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nwifi: wilc1000: avoid buffer overflow in WID string configuration\\n\\nFix the following copy overflow warning identified by Smatch checker.\\n\\n drivers/net/wireless/microchip/wilc1000/wlan_cfg.c:184 wilc_wlan_parse_response_frame()\\n        error: \u0027__memcpy()\u0027 \u0027cfg-\u003es[i]-\u003estr\u0027 copy overflow (512 vs 65537)\\n\\nThis patch introduces size check before accessing the memory buffer.\\nThe checks are base on the WID type of received data from the firmware.\\nFor WID string configuration, the size limit is determined by individual\\nelement size in \u0027struct wilc_cfg_str_vals\u0027 that is maintained in \u0027len\u0027 field\\nof \u0027struct wilc_cfg_str\u0027.\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/2203ef417044b10a8563ade6a17c74183745d72e\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/6085291a1a5865d4ad70f0e5812d524ebd5d1711\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/ae50f8562306a7ea1cf3c9722f97ee244f974729\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/fe9e4d0c39311d0f97b024147a0d155333f388b5\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
  }
}


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