CVE-2026-74324 (GCVE-0-2026-74324)

Vulnerability from cvelistv5 – Published: 2026-08-15 05:58 – Updated: 2026-08-17 05:17
VLAI
Title
wifi: mt76: mt7925: validate skb length in testmode query
Summary
In the Linux kernel, the following vulnerability has been resolved: wifi: mt76: mt7925: validate skb length in testmode query In mt7925_tm_query(), the response skb from mt76_mcu_send_and_get_msg() is used in a memcpy without validating its length: memcpy(evt_resp, skb->data + 8, MT7925_EVT_RSP_LEN); where MT7925_EVT_RSP_LEN is 512. If the firmware returns a response shorter than 520 bytes (8 + 512), this reads beyond the skb data buffer. The over-read data is then returned to userspace via nla_put() in mt7925_testmode_dump(). Add a length check before the memcpy to ensure the skb contains sufficient data.
Severity
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: c948b5da6bbec742b433138e3e3f9537a85af2e5 , < c386e90a7ce8ddec9f038e9437661a2821b0ce89 (git)
Affected: c948b5da6bbec742b433138e3e3f9537a85af2e5 , < e8b214b6d6e1902025452db0a0af73dc9693e4ba (git)
Affected: c948b5da6bbec742b433138e3e3f9537a85af2e5 , < c7369a00860a0704461d440e7c3bf9b49bfdbaee (git)
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Linux Linux Affected: 6.7
Unaffected: 0 , < 6.7 (semver)
Unaffected: 6.18.40 , ≤ 6.18.* (semver)
Unaffected: 7.1.5 , ≤ 7.1.* (semver)
Unaffected: 7.2 , ≤ * (original_commit_for_fix)
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{
  "containers": {
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      "affected": [
        {
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          "product": "Linux",
          "programFiles": [
            "drivers/net/wireless/mediatek/mt76/mt7925/testmode.c"
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              "operator": "OR"
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      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mt76: mt7925: validate skb length in testmode query\n\nIn mt7925_tm_query(), the response skb from mt76_mcu_send_and_get_msg()\nis used in a memcpy without validating its length:\n\n  memcpy(evt_resp, skb-\u003edata + 8, MT7925_EVT_RSP_LEN);\n\nwhere MT7925_EVT_RSP_LEN is 512. If the firmware returns a response\nshorter than 520 bytes (8 + 512), this reads beyond the skb data\nbuffer. The over-read data is then returned to userspace via nla_put()\nin mt7925_testmode_dump().\n\nAdd a length check before the memcpy to ensure the skb contains\nsufficient data."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-17T05:17:14.721Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
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          "url": "https://git.kernel.org/stable/c/e8b214b6d6e1902025452db0a0af73dc9693e4ba"
        },
        {
          "url": "https://git.kernel.org/stable/c/c7369a00860a0704461d440e7c3bf9b49bfdbaee"
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      "title": "wifi: mt76: mt7925: validate skb length in testmode query",
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    "datePublished": "2026-08-15T05:58:19.518Z",
    "dateReserved": "2026-08-15T05:44:03.884Z",
    "dateUpdated": "2026-08-17T05:17:14.721Z",
    "state": "PUBLISHED"
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            "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mt76: mt7925: validate skb length in testmode query\n\nIn mt7925_tm_query(), the response skb from mt76_mcu_send_and_get_msg()\nis used in a memcpy without validating its length:\n\n  memcpy(evt_resp, skb-\u003edata + 8, MT7925_EVT_RSP_LEN);\n\nwhere MT7925_EVT_RSP_LEN is 512. If the firmware returns a response\nshorter than 520 bytes (8 + 512), this reads beyond the skb data\nbuffer. The over-read data is then returned to userspace via nla_put()\nin mt7925_testmode_dump().\n\nAdd a length check before the memcpy to ensure the skb contains\nsufficient data."
          }
        ],
        "id": "CVE-2026-74324",
        "lastModified": "2026-08-17T06:19:26.840",
        "metrics": {},
        "published": "2026-08-15T06:22:33.000",
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      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2026-74324.json",
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    }
  }
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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