CVE-2026-92496 (GCVE-0-2026-92496)
Vulnerability from cvelistv5
Published
2026-09-17 16:10
Modified
2026-10-19 09:04
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: wifi: ath11k: Avoid buffer overread in ath11k_wmi_tlv_op_rx() Currently, in ath11k_wmi_tlv_op_rx(), the firmware buffer is read without first verifying that the buffer has enough data to hold a header. This could result in a buffer overread. Add an upfront length check before dereferencing skb->data as a wmi_cmd_hdr. The check is placed before the trace_ath11k_wmi_event() call to preserve the existing trace semantics (tracing the full raw WMI event including the header), unlike the analogous ath12k fix which could use skb_pull_data() directly. Compile tested only.
References
Impacted products
Vendor Product Version
Linux Linux Version: d5c65159f2895379e11ca13f62feabe93278985d
Version: d5c65159f2895379e11ca13f62feabe93278985d
Version: d5c65159f2895379e11ca13f62feabe93278985d
Version: d5c65159f2895379e11ca13f62feabe93278985d
Version: d5c65159f2895379e11ca13f62feabe93278985d
Version: d5c65159f2895379e11ca13f62feabe93278985d
Version: d5c65159f2895379e11ca13f62feabe93278985d
Version: d5c65159f2895379e11ca13f62feabe93278985d
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{
  "containers": {
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        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/wireless/ath/ath11k/wmi.c"
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      ],
      "cpeApplicability": [
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              "negate": false,
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      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: ath11k: Avoid buffer overread in ath11k_wmi_tlv_op_rx()\n\nCurrently, in ath11k_wmi_tlv_op_rx(), the firmware buffer is read\nwithout first verifying that the buffer has enough data to hold a\nheader. This could result in a buffer overread.\n\nAdd an upfront length check before dereferencing skb-\u003edata as a\nwmi_cmd_hdr. The check is placed before the trace_ath11k_wmi_event()\ncall to preserve the existing trace semantics (tracing the full raw\nWMI event including the header), unlike the analogous ath12k fix which\ncould use skb_pull_data() directly.\n\nCompile tested only."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-19T09:04:02.474Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/20166fd9a4ad15d7eccc63c9dc99680aea6558ef"
        },
        {
          "url": "https://git.kernel.org/stable/c/71690d26c1415e816158b45ee354367244c50d4c"
        },
        {
          "url": "https://git.kernel.org/stable/c/f9726f6d97dca94ab14739c8b632301a940a7e8f"
        },
        {
          "url": "https://git.kernel.org/stable/c/2677fc48dd10dc08cdec99c2692d50fe5f48dcbf"
        },
        {
          "url": "https://git.kernel.org/stable/c/9652e7e23137538169f60323300cae3413475685"
        },
        {
          "url": "https://git.kernel.org/stable/c/72a5e45f606ec454ef556a68ffd92e06b0677f44"
        },
        {
          "url": "https://git.kernel.org/stable/c/9ddbc95dac167e3f2d0e3859e6ce022ae0184fc1"
        },
        {
          "url": "https://git.kernel.org/stable/c/9ef9dd30058cc9223c72f711dca1a28a5947d0c5"
        }
      ],
      "title": "wifi: ath11k: Avoid buffer overread in ath11k_wmi_tlv_op_rx()",
      "x_generator": {
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      }
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  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-92496",
    "datePublished": "2026-09-17T16:10:11.423Z",
    "dateReserved": "2026-09-16T12:21:13.871Z",
    "dateUpdated": "2026-10-19T09:04:02.474Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}


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