CVE-2026-31604 (GCVE-0-2026-31604)
Vulnerability from cvelistv5
Published
2026-04-24 14:42
Modified
2026-04-27 13:56
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: wifi: rtw88: fix device leak on probe failure Driver core holds a reference to the USB interface and its parent USB device while the interface is bound to a driver and there is no need to take additional references unless the structures are needed after disconnect. This driver takes a reference to the USB device during probe but does not to release it on all probe errors (e.g. when descriptor parsing fails). Drop the redundant device reference to fix the leak, reduce cargo culting, make it easier to spot drivers where an extra reference is needed, and reduce the risk of further memory leaks.
References
Impacted products
Vendor Product Version
Linux Linux Version: a82dfd33d1237f6c0fb8a7077022189d1fc7ec98
Version: a82dfd33d1237f6c0fb8a7077022189d1fc7ec98
Version: a82dfd33d1237f6c0fb8a7077022189d1fc7ec98
Version: a82dfd33d1237f6c0fb8a7077022189d1fc7ec98
Version: a82dfd33d1237f6c0fb8a7077022189d1fc7ec98
Version: a82dfd33d1237f6c0fb8a7077022189d1fc7ec98
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/wireless/realtek/rtw88/usb.c"
          ],
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        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
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          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.2"
            },
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              "version": "0",
              "versionType": "semver"
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              "status": "unaffected",
              "version": "6.12.83",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.24",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.19.*",
              "status": "unaffected",
              "version": "6.19.14",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.0.*",
              "status": "unaffected",
              "version": "7.0.1",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.1-rc1",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.136",
                  "versionStartIncluding": "6.2",
                  "vulnerable": true
                },
                {
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              ],
              "negate": false,
              "operator": "OR"
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      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: rtw88: fix device leak on probe failure\n\nDriver core holds a reference to the USB interface and its parent USB\ndevice while the interface is bound to a driver and there is no need to\ntake additional references unless the structures are needed after\ndisconnect.\n\nThis driver takes a reference to the USB device during probe but does\nnot to release it on all probe errors (e.g. when descriptor parsing\nfails).\n\nDrop the redundant device reference to fix the leak, reduce cargo\nculting, make it easier to spot drivers where an extra reference is\nneeded, and reduce the risk of further memory leaks."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-04-27T13:56:46.061Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/f632987306bce9242cdfcf911ee0b2c9455e05a3"
        },
        {
          "url": "https://git.kernel.org/stable/c/a4f4371d194dfa5473cc961f86194084b1b13a69"
        },
        {
          "url": "https://git.kernel.org/stable/c/89a9c1bc7d797120bcc290864e0cb10a440a677f"
        },
        {
          "url": "https://git.kernel.org/stable/c/af7307e96dad00bcc2675dac650d8558a52f2c6f"
        },
        {
          "url": "https://git.kernel.org/stable/c/25a827b7e1d5747a255bdc757f1d3e9e1e8a4e2a"
        },
        {
          "url": "https://git.kernel.org/stable/c/bbb15e71156cd9f5e1869eee7207a06ea8e96c39"
        }
      ],
      "title": "wifi: rtw88: fix device leak on probe failure",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-31604",
    "datePublished": "2026-04-24T14:42:27.342Z",
    "dateReserved": "2026-03-09T15:48:24.122Z",
    "dateUpdated": "2026-04-27T13:56:46.061Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}


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