CVE-2023-53257 (GCVE-0-2023-53257)

Vulnerability from cvelistv5 – Published: 2025-09-15 14:46 – Updated: 2026-08-05 09:13
VLAI
Title
wifi: mac80211: check S1G action frame size
Summary
In the Linux kernel, the following vulnerability has been resolved: wifi: mac80211: check S1G action frame size Before checking the action code, check that it even exists in the frame.
Severity
7.1 (High)
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:N/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 18:02 UTC
CWE
Assigner
Linux CNA under the mitre root
CNA scorecard D 53/100 over 6653 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: f5a4c24e689f54e66201f04d343bdd2e8a1d7923 , < fedd9377dd9c71a950d432fbe1628eebfbed70a1 (git)
Affected: f5a4c24e689f54e66201f04d343bdd2e8a1d7923 , < 7ae7a1378a119780c8c17a6b5fc03011c3bb7029 (git)
Affected: f5a4c24e689f54e66201f04d343bdd2e8a1d7923 , < 5e030a2509be72b452b6f4a800786d43229414db (git)
Affected: f5a4c24e689f54e66201f04d343bdd2e8a1d7923 , < 19e4a47ee74718a22e963e8a647c8c3bfe8bb05c (git)
guessed Create a notification for this product.
Linux Linux Affected: 5.15
Unaffected: 0 , < 5.15 (semver)
Unaffected: 5.15.133 , ≤ 5.15.* (semver)
Unaffected: 6.1.55 , ≤ 6.1.* (semver)
Unaffected: 6.5.5 , ≤ 6.5.* (semver)
Unaffected: 6.6 , ≤ * (original_commit_for_fix)
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                  "version": "f5a4c24e689f54e66201f04d343bdd2e8a1d7923",
                  "versionType": "git"
                },
                {
                  "lessThan": "5e030a2509be72b452b6f4a800786d43229414db",
                  "status": "affected",
                  "version": "f5a4c24e689f54e66201f04d343bdd2e8a1d7923",
                  "versionType": "git"
                },
                {
                  "lessThan": "19e4a47ee74718a22e963e8a647c8c3bfe8bb05c",
                  "status": "affected",
                  "version": "f5a4c24e689f54e66201f04d343bdd2e8a1d7923",
                  "versionType": "git"
                }
              ]
            },
            {
              "defaultStatus": "affected",
              "product": "Linux",
              "programFiles": [
                "net/mac80211/rx.c"
              ],
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "vendor": "Linux",
              "versions": [
                {
                  "status": "affected",
                  "version": "5.15"
                },
                {
                  "lessThan": "5.15",
                  "status": "unaffected",
                  "version": "0",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "5.15.*",
                  "status": "unaffected",
                  "version": "5.15.133",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "6.1.*",
                  "status": "unaffected",
                  "version": "6.1.55",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "6.5.*",
                  "status": "unaffected",
                  "version": "6.5.5",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "*",
                  "status": "unaffected",
                  "version": "6.6",
                  "versionType": "original_commit_for_fix"
                }
              ]
            }
          ],
          "cpeApplicability": [
            {
              "nodes": [
                {
                  "cpeMatch": [
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "5.15.133",
                      "versionStartIncluding": "5.15",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "6.1.55",
                      "versionStartIncluding": "5.15",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "6.5.5",
                      "versionStartIncluding": "5.15",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "6.6",
                      "versionStartIncluding": "5.15",
                      "vulnerable": true
                    }
                  ],
                  "negate": false,
                  "operator": "OR"
                }
              ]
            }
          ],
          "descriptions": [
            {
              "lang": "en",
              "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mac80211: check S1G action frame size\n\nBefore checking the action code, check that it even\nexists in the frame."
            }
          ],
          "metrics": [
            {
              "cvssV3_1": {
                "baseScore": 7.1,
                "baseSeverity": "HIGH",
                "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H",
                "version": "3.1"
              },
              "scenarios": [
                {
                  "lang": "en",
                  "value": "AV:A - The bug is in ieee80211_rx_h_action() on the mac80211 Wi\u2011Fi RX path; an attacker on the same radio/LAN segment injects a truncated S1G action frame (category present, action_code missing). Wi\u2011Fi frame injection is Adjacent, not Network or Local.\nAC:L - The attacker fully controls frame length and contents and can deterministically send a 25-byte action frame (IEEE80211_MIN_ACTION_SIZE) with WLAN_CATEGORY_S1G; no race or attacker-uncontrollable condition is required.\nPR:N - S1G action frames are non-robust, so MFP does not require encryption; an unauthenticated adjacent peer who is associated (e.g. open AP) or who spoofs an associated STA\u2019s MAC reaches the path with no local account or capability on the victim.\nUI:N - The attacker triggers the path solely by transmitting the crafted management frame; no separate victim action (mount, open, click) is required beyond the interface already receiving Wi\u2011Fi frames.\nS:U - The out-of-bounds/uninit read and any resulting fault stay inside the host kernel mac80211 authority and do not cross a VM, IOMMU, or sandbox boundary.\nC:L - The defect is a strictly 1-byte out-of-bounds/uninit read of s1g.action_code past skb-\u003elen into adjacent/uninitialized skb memory, used only in a switch; that is a small bounded read, not an arbitrary read primitive, so Confidentiality is Low.\nI:N - This is a read-only length-check omission with no OOB write, UAF, or control-flow write primitive; the TWT follow-on path has its own length checks and does not grant an integrity or code-execution primitive.\nA:H - Reading past valid frame data into invalid/unmapped skb memory can oops/panic the kernel (as reflected by the KMSAN finding that motivated the fix), and an adjacent peer can trigger this repeatedly, so Availability is High."
                }
              ]
            }
          ],
          "providerMetadata": {
            "dateUpdated": "2026-08-05T09:13:19.341Z",
            "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "shortName": "Linux"
          },
          "references": [
            {
              "url": "https://git.kernel.org/stable/c/fedd9377dd9c71a950d432fbe1628eebfbed70a1"
            },
            {
              "url": "https://git.kernel.org/stable/c/7ae7a1378a119780c8c17a6b5fc03011c3bb7029"
            },
            {
              "url": "https://git.kernel.org/stable/c/5e030a2509be72b452b6f4a800786d43229414db"
            },
            {
              "url": "https://git.kernel.org/stable/c/19e4a47ee74718a22e963e8a647c8c3bfe8bb05c"
            }
          ],
          "title": "wifi: mac80211: check S1G action frame size",
          "x_generator": {
            "engine": "bippy-1.2.0"
          }
        }
      },
      "cveMetadata": {
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "assignerShortName": "Linux",
        "cveId": "CVE-2023-53257",
        "datePublished": "2025-09-15T14:46:29.009Z",
        "dateReserved": "2025-09-15T14:19:21.850Z",
        "dateUpdated": "2026-08-05T09:13:19.341Z",
        "state": "PUBLISHED"
      },
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



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Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
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  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
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Vulnerability timeline

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