CVE-2026-90378 (GCVE-0-2026-90378)
Vulnerability from cvelistv5
Published
2026-09-17 16:09
Modified
2026-10-19 09:02
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: wifi: mt76: mt792x: Fix memory leak in SDIO TX path When tx_prepare_skb() returns an error in the SDIO TX path, the skb is not freed, leading to a memory leak. This can occur when zero-length frames (such as WNM NULL frames) are dropped to prevent potential hardware TX hangs. Fix this by properly releasing the skb with ieee80211_tx_status_ext() when tx_prepare_skb() fails.
References
Impacted products
Vendor Product Version
Linux Linux Version: b747fa343817fd322b4463dda99d28fc51e19c52
Version: b747fa343817fd322b4463dda99d28fc51e19c52
Version: b747fa343817fd322b4463dda99d28fc51e19c52
Version: b747fa343817fd322b4463dda99d28fc51e19c52
Version: b747fa343817fd322b4463dda99d28fc51e19c52
Version: b747fa343817fd322b4463dda99d28fc51e19c52
Version: b747fa343817fd322b4463dda99d28fc51e19c52
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/wireless/mediatek/mt76/sdio.c"
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        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
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          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.12"
            },
            {
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              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.221",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.188",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.157",
              "versionType": "semver"
            },
            {
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              "status": "unaffected",
              "version": "6.12.110",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.52",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.2.*",
              "status": "unaffected",
              "version": "7.2.6",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.3",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.15.221",
                  "versionStartIncluding": "5.12",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.188",
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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: mt76: mt792x: Fix memory leak in SDIO TX path\n\nWhen tx_prepare_skb() returns an error in the SDIO TX path, the\nskb is not freed, leading to a memory leak. This can occur when\nzero-length frames (such as WNM NULL frames) are dropped to prevent\npotential hardware TX hangs.\n\nFix this by properly releasing the skb with ieee80211_tx_status_ext()\nwhen tx_prepare_skb() fails."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-19T09:02:36.822Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/b64d196280aff8494ba6fb387e37b18479c99b83"
        },
        {
          "url": "https://git.kernel.org/stable/c/9ef1351209d42b7d96604f2a13d7ea8215a24e07"
        },
        {
          "url": "https://git.kernel.org/stable/c/c2c7f16f2c62f79f7c381e500afa7123580742a5"
        },
        {
          "url": "https://git.kernel.org/stable/c/6a8000c76dc34490a2bb321ad1a5f882a2ccab7c"
        },
        {
          "url": "https://git.kernel.org/stable/c/ddf6a17d8e3d0dbb841c13c10d7c1340a138a80d"
        },
        {
          "url": "https://git.kernel.org/stable/c/6a342db7a6502bc6781579145e05d4d4731786ab"
        },
        {
          "url": "https://git.kernel.org/stable/c/808f2767d4217a5b96f674288573b9b89d432eed"
        }
      ],
      "title": "wifi: mt76: mt792x: Fix memory leak in SDIO TX path",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-90378",
    "datePublished": "2026-09-17T16:09:16.655Z",
    "dateReserved": "2026-09-11T19:38:34.808Z",
    "dateUpdated": "2026-10-19T09:02:36.822Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}


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