CVE-2026-93791 (GCVE-0-2026-93791)

Vulnerability from cvelistv5 – Published: 2026-09-24 16:02 – Updated: 2026-09-25 12:42
VLAI
Title
wifi: iwlwifi: mvm: add a check on the tid coming from the firmware
Summary
In the Linux kernel, the following vulnerability has been resolved: wifi: iwlwifi: mvm: add a check on the tid coming from the firmware ba_notif->tid is a firmware-controlled u8 that is used directly as an array index into tid_data[] without any validation. Add a bounds check against IWL_MAX_TID_COUNT before dereferencing the array.
Severity
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: c46e7724bfe9bbff17bc468903a757248b99e4ed , < 0b5325a0771674f1d65618de7db3df9d49186a12 (git)
Affected: c46e7724bfe9bbff17bc468903a757248b99e4ed , < 59f64c2839022f41a7867b38f9e38c185ff39283 (git)
Affected: c46e7724bfe9bbff17bc468903a757248b99e4ed , < 0e4c0d83267261cf67ec9690856edf4a56bb7dfc (git)
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Linux Linux Affected: 4.9
Unaffected: 0 , < 4.9 (semver)
Unaffected: 6.12.111 , ≤ 6.12.* (semver)
Unaffected: 6.18.53 , ≤ 6.18.* (semver)
Unaffected: 7.2 , ≤ * (original_commit_for_fix)
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/wireless/intel/iwlwifi/mvm/tx.c"
          ],
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          "vendor": "Linux",
          "versions": [
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            },
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              "version": "0",
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            }
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                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: iwlwifi: mvm: add a check on the tid coming from the firmware\n\nba_notif-\u003etid is a firmware-controlled u8 that is used directly\nas an array index into tid_data[] without any validation. Add a\nbounds check against IWL_MAX_TID_COUNT before dereferencing the\narray."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-09-25T12:42:57.300Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
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          "url": "https://git.kernel.org/stable/c/0b5325a0771674f1d65618de7db3df9d49186a12"
        },
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        },
        {
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        }
      ],
      "title": "wifi: iwlwifi: mvm: add a check on the tid coming from the firmware",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
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  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-93791",
    "datePublished": "2026-09-24T16:02:24.968Z",
    "dateReserved": "2026-09-18T17:59:28.788Z",
    "dateUpdated": "2026-09-25T12:42:57.300Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
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      "date": "2026-09-28",
      "epss": "0.00166",
      "percentile": "0.05215"
    },
    "microsoft_vex": {
      "current_release_date": "2026-09-27T23:57:19.000Z",
      "cve": "CVE-2026-93791",
      "id": "msrc_CVE-2026-93791",
      "initial_release_date": "2026-09-27T23:57:19.000Z",
      "product_status:known_affected": "1",
      "source": "Microsoft CSAF VEX",
      "status": "final",
      "title": "wifi: iwlwifi: mvm: add a check on the tid coming from the firmware",
      "url": "https://msrc.microsoft.com/csaf/vex/2026/msrc_cve-2026-93791.json",
      "version": "1"
    },
    "nvd": {
      "cve": {
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          {
            "affectedData": [
              {
                "defaultStatus": "unaffected",
                "product": "Linux",
                "programFiles": [
                  "drivers/net/wireless/intel/iwlwifi/mvm/tx.c"
                ],
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                    "version": "0",
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                  },
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                    "version": "6.18.53",
                    "versionType": "semver"
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                ]
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            ],
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          }
        ],
        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: iwlwifi: mvm: add a check on the tid coming from the firmware\n\nba_notif-\u003etid is a firmware-controlled u8 that is used directly\nas an array index into tid_data[] without any validation. Add a\nbounds check against IWL_MAX_TID_COUNT before dereferencing the\narray."
          }
        ],
        "id": "CVE-2026-93791",
        "lastModified": "2026-09-25T13:17:19.700",
        "metrics": {},
        "published": "2026-09-24T17:17:11.820",
        "references": [
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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          },
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          }
        ],
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        "vulnStatus": "Received"
      }
    },
    "redhat_vex": {
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      "current_release_date": "2026-09-28T11:46:57+00:00",
      "cve": "CVE-2026-93791",
      "id": "CVE-2026-93791",
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      "product_status:known_affected": "234",
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      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: wifi: iwlwifi: mvm: add a check on the tid coming from the firmware",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-93791.json",
      "version": "3"
    },
    "suse_vex": {
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      "current_release_date": "2026-09-26T23:31:33Z",
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      "initial_release_date": "2026-09-24T23:47:48Z",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2026-93791",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2026-93791.json",
      "version": "3"
    }
  }
}



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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

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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.



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.