CVE-2026-46271 (GCVE-0-2026-46271)
Vulnerability from cvelistv5
Published
2026-06-03 15:50
Modified
2026-10-19 19:36
Severity ?
7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Summary
In the Linux kernel, the following vulnerability has been resolved: wifi: ath12k: do WoW offloads only on primary link In case of multi-link connection, WCN7850 firmware crashes due to WoW offloads enabled on both primary and secondary links. Change to do it only on primary link to fix it. Tested-on: WCN7850 hw2.0 PCI WLAN.HMT.1.1.c5-00284-QCAHMTSWPL_V1.0_V2.0_SILICONZ-1
References
Impacted products
Vendor Product Version
Linux Linux Version: 32f7b19668bd2894f1a236580c2132fc4b9f4449
Version: 32f7b19668bd2894f1a236580c2132fc4b9f4449
Version: 32f7b19668bd2894f1a236580c2132fc4b9f4449
 Create a notification for this product.
Show details on NVD website

To clipboard 

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-46271",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-10-16T15:21:33.891489Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "problemTypes": [
          {
            "descriptions": [
              {
                "cweId": "CWE-667",
                "description": "CWE-667 Improper Locking",
                "lang": "en",
                "type": "CWE"
              }
            ]
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-10-19T19:36:56.613Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/wireless/ath/ath12k/wow.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "7379837c3f9efa576dc2d716ebfaa3a113b3112f",
              "status": "affected",
              "version": "32f7b19668bd2894f1a236580c2132fc4b9f4449",
              "versionType": "git"
            },
            {
              "lessThan": "e042da1085d9f1686c58a4378d5840f52a36598e",
              "status": "affected",
              "version": "32f7b19668bd2894f1a236580c2132fc4b9f4449",
              "versionType": "git"
            },
            {
              "lessThan": "e62102ac9b773bdb08475aa9ca24dea61ae98708",
              "status": "affected",
              "version": "32f7b19668bd2894f1a236580c2132fc4b9f4449",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/wireless/ath/ath12k/wow.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.16"
            },
            {
              "lessThan": "6.16",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.14",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.19.*",
              "status": "unaffected",
              "version": "6.19.4",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.0",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.14",
                  "versionStartIncluding": "6.16",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.19.4",
                  "versionStartIncluding": "6.16",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.0",
                  "versionStartIncluding": "6.16",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: ath12k: do WoW offloads only on primary link\n\nIn case of multi-link connection, WCN7850 firmware crashes due to WoW\noffloads enabled on both primary and secondary links.\n\nChange to do it only on primary link to fix it.\n\nTested-on: WCN7850 hw2.0 PCI WLAN.HMT.1.1.c5-00284-QCAHMTSWPL_V1.0_V2.0_SILICONZ-1"
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 7.8,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "scenarios": [
            {
              "lang": "en",
              "value": "AV:L - The vulnerable code runs only in ath12k_wow_op_suspend during system suspend with WoW enabled, reached via wiphy PM \u2192 cfg80211 \u2192 mac80211 drv_suspend, not via remote WiFi frame handling.\nAC:L - On affected WCN7850 hardware, a local attacker (or rogue MLO AP plus victim suspend) can reliably trigger the path by associating over MLO and invoking suspend while wowlan is configured; no uncontrollable race or rare layout is required.\nPR:L - Exploitation requires local suspend capability (typical session/logind user) and an active WoW configuration (often pre-set by NetworkManager; otherwise NL80211_CMD_SET_WOWLAN needs CAP_NET_ADMIN, obtainable in a user network namespace).\nUI:N - Suspend/WoW entry is commonly driven by automatic system power management without a separate deliberate user security action beyond normal laptop use.\nS:U - Impact is confined to the WiFi driver/firmware stack on the same host; it does not cross VM, container, or IOMMU security boundaries.\nC:H - Although the immediate fault is firmware-side, the failure mode cannot rule out disclosure via corrupted firmware/host DMA or WMI shared buffers; per conservative scoring, treat closed firmware memory faults as potential arbitrary read when impact is uncertain.\nI:H - Duplicate WoW offload WMI on multiple MLO vdevs corrupts firmware state; when exploitation path to host integrity is uncertain, score High because firmware compromise over PCIe may enable control of host-visible rings and descriptors.\nA:H - The commit documents WCN7850 firmware crash when WoW offloads are enabled on both MLO links, causing WiFi subsystem failure and broken or wedged suspend/resume on affected devices."
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-05T12:30:55.666Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/7379837c3f9efa576dc2d716ebfaa3a113b3112f"
        },
        {
          "url": "https://git.kernel.org/stable/c/e042da1085d9f1686c58a4378d5840f52a36598e"
        },
        {
          "url": "https://git.kernel.org/stable/c/e62102ac9b773bdb08475aa9ca24dea61ae98708"
        }
      ],
      "title": "wifi: ath12k: do WoW offloads only on primary link",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-46271",
    "datePublished": "2026-06-03T15:50:13.645Z",
    "dateReserved": "2026-05-13T15:03:33.109Z",
    "dateUpdated": "2026-10-19T19:36:56.613Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "vulnrichment": {
      "containers": "{\"adp\": [{\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2026-46271\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"total\"}], \"version\": \"2.0.3\", \"timestamp\": \"2026-10-16T15:21:33.891489Z\"}}}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-667\", \"description\": \"CWE-667 Improper Locking\"}]}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2026-10-16T15:21:34.893Z\"}}], \"cna\": {\"title\": \"wifi: ath12k: do WoW offloads only on primary link\", \"metrics\": [{\"cvssV3_1\": {\"version\": \"3.1\", \"baseScore\": 7.8, \"baseSeverity\": \"HIGH\", \"vectorString\": \"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H\"}, \"scenarios\": [{\"lang\": \"en\", \"value\": \"AV:L - The vulnerable code runs only in ath12k_wow_op_suspend during system suspend with WoW enabled, reached via wiphy PM \\u2192 cfg80211 \\u2192 mac80211 drv_suspend, not via remote WiFi frame handling.\\nAC:L - On affected WCN7850 hardware, a local attacker (or rogue MLO AP plus victim suspend) can reliably trigger the path by associating over MLO and invoking suspend while wowlan is configured; no uncontrollable race or rare layout is required.\\nPR:L - Exploitation requires local suspend capability (typical session/logind user) and an active WoW configuration (often pre-set by NetworkManager; otherwise NL80211_CMD_SET_WOWLAN needs CAP_NET_ADMIN, obtainable in a user network namespace).\\nUI:N - Suspend/WoW entry is commonly driven by automatic system power management without a separate deliberate user security action beyond normal laptop use.\\nS:U - Impact is confined to the WiFi driver/firmware stack on the same host; it does not cross VM, container, or IOMMU security boundaries.\\nC:H - Although the immediate fault is firmware-side, the failure mode cannot rule out disclosure via corrupted firmware/host DMA or WMI shared buffers; per conservative scoring, treat closed firmware memory faults as potential arbitrary read when impact is uncertain.\\nI:H - Duplicate WoW offload WMI on multiple MLO vdevs corrupts firmware state; when exploitation path to host integrity is uncertain, score High because firmware compromise over PCIe may enable control of host-visible rings and descriptors.\\nA:H - The commit documents WCN7850 firmware crash when WoW offloads are enabled on both MLO links, causing WiFi subsystem failure and broken or wedged suspend/resume on affected devices.\"}]}], \"affected\": [{\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"32f7b19668bd2894f1a236580c2132fc4b9f4449\", \"lessThan\": \"7379837c3f9efa576dc2d716ebfaa3a113b3112f\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"32f7b19668bd2894f1a236580c2132fc4b9f4449\", \"lessThan\": \"e042da1085d9f1686c58a4378d5840f52a36598e\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"32f7b19668bd2894f1a236580c2132fc4b9f4449\", \"lessThan\": \"e62102ac9b773bdb08475aa9ca24dea61ae98708\", \"versionType\": \"git\"}], \"programFiles\": [\"drivers/net/wireless/ath/ath12k/wow.c\"], \"defaultStatus\": \"unaffected\"}, {\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"6.16\"}, {\"status\": \"unaffected\", \"version\": \"0\", \"lessThan\": \"6.16\", \"versionType\": \"semver\"}, {\"status\": \"unaffected\", \"version\": \"6.18.14\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.18.*\"}, {\"status\": \"unaffected\", \"version\": \"6.19.4\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.19.*\"}, {\"status\": \"unaffected\", \"version\": \"7.0\", \"versionType\": \"original_commit_for_fix\", \"lessThanOrEqual\": \"*\"}], \"programFiles\": [\"drivers/net/wireless/ath/ath12k/wow.c\"], \"defaultStatus\": \"affected\"}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/7379837c3f9efa576dc2d716ebfaa3a113b3112f\"}, {\"url\": \"https://git.kernel.org/stable/c/e042da1085d9f1686c58a4378d5840f52a36598e\"}, {\"url\": \"https://git.kernel.org/stable/c/e62102ac9b773bdb08475aa9ca24dea61ae98708\"}], \"x_generator\": {\"engine\": \"bippy-1.2.0\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\nwifi: ath12k: do WoW offloads only on primary link\\n\\nIn case of multi-link connection, WCN7850 firmware crashes due to WoW\\noffloads enabled on both primary and secondary links.\\n\\nChange to do it only on primary link to fix it.\\n\\nTested-on: WCN7850 hw2.0 PCI WLAN.HMT.1.1.c5-00284-QCAHMTSWPL_V1.0_V2.0_SILICONZ-1\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.18.14\", \"versionStartIncluding\": \"6.16\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.19.4\", \"versionStartIncluding\": \"6.16\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"7.0\", \"versionStartIncluding\": \"6.16\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2026-08-05T12:30:55.666Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2026-46271\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-10-19T19:36:56.613Z\", \"dateReserved\": \"2026-05-13T15:03:33.109Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2026-06-03T15:50:13.645Z\", \"assignerShortName\": \"Linux\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}


Log in or create an account to share your comment.




Tags
Taxonomy of the tags.




Sightings

Author Source Type Date

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
  • Confirmed: The vulnerability is confirmed from an analyst perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
  • Patched: This vulnerability was successfully patched by the user reporting the sighting.
  • Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
  • Not confirmed: The user expresses doubt about the veracity of the vulnerability.
  • Not patched: This vulnerability was not successfully patched by the user reporting the sighting.