CVE-2025-37943 (GCVE-0-2025-37943)
Vulnerability from cvelistv5
Published
2025-05-20 15:58
Modified
2026-08-05 11:58
Severity ?
8.8 (High) - CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Summary
In the Linux kernel, the following vulnerability has been resolved: wifi: ath12k: Fix invalid data access in ath12k_dp_rx_h_undecap_nwifi In certain cases, hardware might provide packets with a length greater than the maximum native Wi-Fi header length. This can lead to accessing and modifying fields in the header within the ath12k_dp_rx_h_undecap_nwifi function for DP_RX_DECAP_TYPE_NATIVE_WIFI decap type and potentially resulting in invalid data access and memory corruption. Add a sanity check before processing the SKB to prevent invalid data access in the undecap native Wi-Fi function for the DP_RX_DECAP_TYPE_NATIVE_WIFI decap type. Tested-on: QCN9274 hw2.0 PCI WLAN.WBE.1.3.1-00173-QCAHKSWPL_SILICONZ-1
References
Impacted products
Vendor Product Version
Linux Linux Version: d889913205cf7ebda905b1e62c5867ed4e39f6c2
Version: d889913205cf7ebda905b1e62c5867ed4e39f6c2
Version: d889913205cf7ebda905b1e62c5867ed4e39f6c2
Version: d889913205cf7ebda905b1e62c5867ed4e39f6c2
Version: d889913205cf7ebda905b1e62c5867ed4e39f6c2
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/wireless/ath/ath12k/dp_rx.c"
          ],
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        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/wireless/ath/ath12k/dp_rx.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.3"
            },
            {
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              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
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              "status": "unaffected",
              "version": "6.6.88",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.24",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.13.*",
              "status": "unaffected",
              "version": "6.13.12",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.14.*",
              "status": "unaffected",
              "version": "6.14.3",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.15",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.88",
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                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.24",
                  "versionStartIncluding": "6.3",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.13.12",
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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: ath12k: Fix invalid data access in ath12k_dp_rx_h_undecap_nwifi\n\nIn certain cases, hardware might provide packets with a\nlength greater than the maximum native Wi-Fi header length.\nThis can lead to accessing and modifying fields in the header\nwithin the ath12k_dp_rx_h_undecap_nwifi function for\nDP_RX_DECAP_TYPE_NATIVE_WIFI decap type and\npotentially resulting in invalid data access and memory corruption.\n\nAdd a sanity check before processing the SKB to prevent invalid\ndata access in the undecap native Wi-Fi function for the\nDP_RX_DECAP_TYPE_NATIVE_WIFI decap type.\n\nTested-on: QCN9274 hw2.0 PCI WLAN.WBE.1.3.1-00173-QCAHKSWPL_SILICONZ-1"
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 8.8,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "scenarios": [
            {
              "lang": "en",
              "value": "AV:A - The vulnerable code is the ath12k 802.11 receive path, triggered by a crafted 4-address QoS data frame with the Order bit set that is injected over the air; the attacker must be within Wi-Fi radio range of the target radio. Per kernel guidance, WiFi frame injection is Adjacent.\nAC:L - The attacker fully controls the frame_control field and header contents of the injected frame and can retransmit indefinitely until it lands in the native-Wi-Fi decap or WBM error path; no condition outside the attacker\u0027s control is required, and the ath11k twin fix documents real observed stack corruption from this exact path.\nPR:N - No authentication or association is needed \u2014 the frame only has to pass the hardware address filter, and the patched null_q_desc/tkip_mic_err error paths specifically handle frames with no peer and no REO queue (ath12k_dp_rx_h_mpdu falls back to HAL_ENCRYPT_TYPE_OPEN when peer lookup fails).\nUI:N - The corruption happens in the NAPI receive path as soon as the frame is processed; no victim action is required beyond having the wireless interface up.\nS:U - The out-of-bounds write corrupts the kernel stack of the receiving host, staying within the same security authority; no VM, IOMMU, or sandbox boundary is crossed.\nC:H - The trailing memcpy reads up to 36 bytes from the 30-byte stack array and copies the result into the skb that is delivered to mac80211 (and forwarded in AP/mesh mode), leaking adjacent kernel stack and stale DMA buffer contents; the attacker-controlled stack corruption is further leverageable as a memory-disclosure primitive.\nI:H - Up to 6 bytes of attacker-chosen 802.11 header data are written past a 30-byte stack buffer, overwriting adjacent locals, the stack canary, or saved registers \u2014 an out-of-bounds write with controlled content that is a control-flow-hijack primitive.\nA:H - Kernel stack corruption reliably produces a panic via __stack_chk_fail or FORTIFY_SOURCE, and the mishandled skb_pull/skb_push can trigger skb_under_panic; the ath11k report confirms an observed \"Kernel stack is corrupted\" crash."
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-05T11:58:31.647Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/7f1d986da5c6abb75ffe4d0d325fc9b341c41a1c"
        },
        {
          "url": "https://git.kernel.org/stable/c/3abe15e756481c45f6acba3d476cb3ca4afc3b61"
        },
        {
          "url": "https://git.kernel.org/stable/c/6ee653194ddb83674913fd2727b8ecfae0597ade"
        },
        {
          "url": "https://git.kernel.org/stable/c/50be1fb76556e80af9f5da80f28168b6c71bce58"
        },
        {
          "url": "https://git.kernel.org/stable/c/9a0dddfb30f120db3851627935851d262e4e7acb"
        }
      ],
      "title": "wifi: ath12k: Fix invalid data access in ath12k_dp_rx_h_undecap_nwifi",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2025-37943",
    "datePublished": "2025-05-20T15:58:19.607Z",
    "dateReserved": "2025-04-16T04:51:23.972Z",
    "dateUpdated": "2026-08-05T11:58:31.647Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}


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