CVE-2022-50413 (GCVE-0-2022-50413)

Vulnerability from cvelistv5 – Published: 2025-09-18 16:03 – Updated: 2026-08-05 08:58
VLAI
Title
wifi: mac80211: fix use-after-free
Summary
In the Linux kernel, the following vulnerability has been resolved: wifi: mac80211: fix use-after-free We've already freed the assoc_data at this point, so need to use another copy of the AP (MLD) address instead.
Severity
8.8 (High)
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-01-14 19:09 UTC
CWE
Assigner
Linux CNA under the mitre root
CNA scorecard D 53/100 over 7033 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 81151ce462e533551f3284bfdb8e0f461c9220e6 , < aebef10affe16228462af680b88751bf137e2856 (git)
Affected: 81151ce462e533551f3284bfdb8e0f461c9220e6 , < 40fb87129049ec5876dabf4a4d4aed6642b31f1a (git)
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Linux Linux Affected: 6.0
Unaffected: 0 , < 6.0 (semver)
Unaffected: 6.0.3 , ≤ 6.0.* (semver)
Unaffected: 6.1 , ≤ * (original_commit_for_fix)
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                  "value": "AV:A - The UAF is reached by processing an over-the-air Association Response in ieee80211_sta_rx_queued_mgmt \u2192 ieee80211_rx_mgmt_assoc_resp during MLO association; an attacker on the same Wi-Fi segment (malicious/evil-twin MLO AP or BSSID-spoofed frame injection) delivers that frame.\nAC:L - Once an MLO association is in progress, a successful AssocResp with a valid multi-link element deterministically frees assoc_data then reuses assoc_data-\u003eap_addr; the adjacent attacker fully controls that response, with no race or attacker-uncontrollable timing required.\nPR:N - The vulnerable path runs in the station RX/MLME soft path on the received AssocResp with no host authentication or capability check; an unauthenticated adjacent Wi-Fi peer needs no account on the victim.\nUI:N - In the worst reasonable case (auto-reconnect/evil twin of a known SSID, or an already-initiated MLO association), the AssocResp is processed automatically without a further victim action at attack time.\nS:U - The use-after-free corrupts mac80211/cfg80211 state inside the host kernel authority only and does not cross a VM, IOMMU, or sandbox boundary.\nC:H - After kfree(assoc_data), resp.ap_mld_addr points into freed heap memory and cfg80211 later memcpy\u0027s ETH_ALEN from it; that UAF enables heap reuse and arbitrary kernel disclosure.\nI:H - The same sprayable ieee80211_mgd_assoc_data UAF while the dangling AP MLD address is consumed into connection/result state yields write and control-flow primitives characteristic of exploitable kernel UAFs.\nA:H - Use of the freed assoc_data object can oops/panic the kernel in the association-response path, so availability impact is complete even without full code execution."
                }
              ]
            }
          ],
          "providerMetadata": {
            "dateUpdated": "2026-08-05T08:58:41.448Z",
            "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "shortName": "Linux"
          },
          "references": [
            {
              "url": "https://git.kernel.org/stable/c/aebef10affe16228462af680b88751bf137e2856"
            },
            {
              "url": "https://git.kernel.org/stable/c/40fb87129049ec5876dabf4a4d4aed6642b31f1a"
            }
          ],
          "title": "wifi: mac80211: fix use-after-free",
          "x_generator": {
            "engine": "bippy-1.2.0"
          }
        }
      },
      "cveMetadata": {
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "assignerShortName": "Linux",
        "cveId": "CVE-2022-50413",
        "datePublished": "2025-09-18T16:03:56.853Z",
        "dateReserved": "2025-09-17T14:53:07.002Z",
        "dateUpdated": "2026-08-05T08:58:41.448Z",
        "state": "PUBLISHED"
      },
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



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Sightings

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Nomenclature

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