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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
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)
guessed Create a notification for this product.
Show details on NVD website
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              "product": "Linux",
              "programFiles": [
                "net/mac80211/rx.c"
              ],
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "vendor": "Linux",
              "versions": [
                {
                  "lessThan": "fedd9377dd9c71a950d432fbe1628eebfbed70a1",
                  "status": "affected",
                  "version": "f5a4c24e689f54e66201f04d343bdd2e8a1d7923",
                  "versionType": "git"
                },
                {
                  "lessThan": "7ae7a1378a119780c8c17a6b5fc03011c3bb7029",
                  "status": "affected",
                  "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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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.


Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.