{
  "schema_version": "1.6.1",
  "id": "RPI-CVE-2026-80722",
  "modified": "2026-10-09T11:39:44Z",
  "upstream": [
    "CVE-2026-80722"
  ],
  "published": "2026-08-28T06:53:24Z",
  "summary": "wifi: mac80211: validate individual TWT params before driver setup",
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mac80211: validate individual TWT params before driver setup\n\nieee80211_process_rx_twt_action() only partially validates a received\nS1G TWT setup frame before queueing it.\n\nAn individual agreement can therefore reach ieee80211_s1g_rx_twt_setup()\nwith twt->length too short for the full struct ieee80211_twt_params.\n\nThe individual path passes twt to drv_add_twt_setup(). Both the tracepoint\nand the driver callback consume the complete parameters block, not merely\nreq_type. Do not pass a short individual agreement to the driver.\nBroadcast agreements remain unchanged because they are rejected locally\nafter accessing only req_type.\n\n[edit commit message to not overclaim lack of validation nor\n understate driver impact]",
  "severity": [
    {
      "type": "CVSS_V3",
      "score": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
    }
  ],
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            "linux_commit": "95b85bebbedcaedfa7ca79116ed38b7376fba412",
            "upstream_version": "6.18.33",
            "assessment": "commit ancestry (strak rule)",
            "upstream_fixed": "6.18.44"
          },
          "1:6.18.34-1+rpt1": {
            "linux_commit": "c8c7494100e99ee05b11aaa4f0588a223a63d1af",
            "upstream_version": "6.18.34",
            "assessment": "commit ancestry (strak rule)",
            "upstream_fixed": "6.18.44"
          },
          "1:6.18.39-1+rpt1": {
            "linux_commit": "60ea684a8ace97bb0db1a16e20753bdd6ab371ff",
            "upstream_version": "6.18.39",
            "assessment": "commit ancestry (strak rule)",
            "upstream_fixed": "6.18.44"
          }
        }
      }
    }
  ],
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-80722"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/92fcd0f30dc8e51f252589b082d46851d295cc1a"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/09d60d1f72e6598241490eb6c4e97245af895c09"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/ff558072d199c1d641d1561da622e67f780514de"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/ade9e2f0f7f4d3089600ac2af8ef0b91746f923b"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/b558e07708d886acfcf4b0391ed7a8546e81d326"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/47fb04c3826e1f90271d405523043d6708b9072a"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/0502d5077e419427d80f4d46ba95d0067f5fb916"
    }
  ],
  "database_specific": {
    "source": "https://git.kernel.org/pub/scm/linux/security/vulns.git",
    "upstream_modified": "2026-08-29T06:25:05Z",
    "severity": {
      "source": "kernel CNA",
      "cvss_v3_score": 8.8,
      "cvss_v3_severity": "High",
      "scenario": "AV:A - Malformed S1G TWT setup action frames reach mac80211 via normal WiFi RX (driver -> ieee80211_rx_h_action -> ieee80211_process_rx_twt_action -> ieee80211_s1g_rx_twt_setup); an adjacent attacker within radio range sends crafted 802.11 management frames to a vulnerable AP.\nAC:L - The attacker fully controls the TWT element length and payload; ieee80211_process_rx_twt_action() only validates two bytes of req_type before queueing, so a short individual agreement reliably reaches drv_add_twt_setup() without races or victim-specific timing.\nPR:N - No Linux privileges on the victim AP are required; exploitation needs only normal 802.11 association as a WiFi client to an S1G AP with twt_responder enabled and a driver implementing add_twt_setup (e.g. MediaTek mt7915/mt7996).\nUI:N - No deliberate victim action is needed beyond operating an S1G AP that accepts associated stations; the attacker directly injects the malformed TWT setup frame and mac80211 processes it automatically on receive.\nS:U - Impact is kernel/driver heap memory corruption on the AP host within the same security authority; it does not cross VM, IOMMU, or sandbox boundaries (standard kernel compromise scope).\nC:H - drv_add_twt_setup(), its tracepoint, and driver callbacks read the full ieee80211_twt_params (twt, min_twt_dur, mantissa, channel) beyond the validated skb bounds, causing out-of-bounds reads of adjacent skb/heap memory that can disclose kernel data.\nI:H - MediaTek add_twt_setup() handlers write twt_agrt fields (req_type, min_twt_dur, twt) past the undersized params block into skb tail/heap memory, providing out-of-bounds write primitives exploitable for further memory corruption or code execution.\nA:H - Out-of-bounds access in mac80211/driver TWT setup can kernel-oops the AP or hang/crash WiFi firmware when corrupted parameters are programmed into hardware TWT state from attacker-controlled short frames."
    }
  }
}