CVE-2026-98828 (GCVE-0-2026-98828)
Vulnerability from cvelistv5
Published
2026-10-18 15:49
Modified
2026-10-19 09:26
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: wifi: ath9k: reject short WMI command responses ath9k_wmi_rsp_callback() removes the validated WMI header and copies the number of bytes expected by the waiting command into its response buffer. A device response shorter than that expectation can therefore be read beyond the skb payload. Record -EMSGSIZE for a short response, complete the waiter, and return the stored status from the command path. This also prevents callers from consuming stale response bytes as a successful reply.
References
Impacted products
Vendor Product Version
Linux Linux Version: fb9987d0f748c983bb795a86f47522313f701a08
Version: fb9987d0f748c983bb795a86f47522313f701a08
Version: fb9987d0f748c983bb795a86f47522313f701a08
Version: fb9987d0f748c983bb795a86f47522313f701a08
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/wireless/ath/ath9k/wmi.c",
            "drivers/net/wireless/ath/ath9k/wmi.h"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
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          "programFiles": [
            "drivers/net/wireless/ath/ath9k/wmi.c",
            "drivers/net/wireless/ath/ath9k/wmi.h"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "2.6.35"
            },
            {
              "lessThan": "2.6.35",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
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              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.56",
              "versionType": "semver"
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              "status": "unaffected",
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            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.3",
              "versionType": "original_commit_for_fix"
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          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
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              "cpeMatch": [
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                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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                  "vulnerable": true
                },
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                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: ath9k: reject short WMI command responses\n\nath9k_wmi_rsp_callback() removes the validated WMI header and copies\nthe number of bytes expected by the waiting command into its response\nbuffer. A device response shorter than that expectation can therefore\nbe read beyond the skb payload.\n\nRecord -EMSGSIZE for a short response, complete the waiter, and return\nthe stored status from the command path. This also prevents callers from\nconsuming stale response bytes as a successful reply."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-19T09:26:20.947Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/03ef61d05aa26022327f971b790f07e6bf6e35d6"
        },
        {
          "url": "https://git.kernel.org/stable/c/e0c21130c1c7791ba73b19a3a9ea767c8cd43745"
        },
        {
          "url": "https://git.kernel.org/stable/c/a3b0137c855a61371d9cf9993b8bcc33c9798202"
        },
        {
          "url": "https://git.kernel.org/stable/c/93ce8ea70451e800601bc9444aa33043de15d67b"
        }
      ],
      "title": "wifi: ath9k: reject short WMI command responses",
      "x_generator": {
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  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-98828",
    "datePublished": "2026-10-18T15:49:22.580Z",
    "dateReserved": "2026-09-25T10:25:14.372Z",
    "dateUpdated": "2026-10-19T09:26:20.947Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}


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