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CVE-2026-93793

Full vulnerability record from the local CVENow database.

Description

In the Linux kernel, the following vulnerability has been resolved: wifi: iwlwifi: mvm: validate TX_CMD response layout TX_CMD parsing uses frame_count to walk status entries and then read the trailing SCD SSN. Make the minimum-length check follow that exact runtime layout calculation before parsing the payload. For new TX API, reject TX_CMD responses with frame_count != 1 and warn/return in the aggregation handler to document that aggregated accounting is expected via BA notifications.

Severity
HIGH
CVSS score
8.8 (v3.1)
Vulnerability status
Received
Source identifier
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Published
2026-09-24 17:17:12.050000
Last modified
2026-10-30 13:21:02.800000
View original CVE JSON
{
  "id": "CVE-2026-93793",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "published": "2026-09-24T17:17:12.050",
  "lastModified": "2026-10-30T13:21:02.800",
  "vulnStatus": "Received",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: iwlwifi: mvm: validate TX_CMD response layout\n\nTX_CMD parsing uses frame_count to walk status entries and then\nread the trailing SCD SSN. Make the minimum-length check follow\nthat exact runtime layout calculation before parsing the payload.\n\nFor new TX API, reject TX_CMD responses with frame_count != 1 and\nwarn/return in the aggregation handler to document that aggregated\naccounting is expected via BA notifications."
    }
  ],
  "affected": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "affectedData": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "programFiles": [
            "drivers/net/wireless/intel/iwlwifi/mvm/tx.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "versions": [
            {
              "version": "8ca151b568b67a7b72dcfc6ee6ea7c107ddd795c",
              "lessThan": "658b5c00d653cdd72babc86791f6f6711190c740",
              "versionType": "git",
              "status": "affected"
            },
            {
              "version": "8ca151b568b67a7b72dcfc6ee6ea7c107ddd795c",
              "lessThan": "5e871c03506c529d5fe372d099c1ad1465c7bc38",
              "versionType": "git",
              "status": "affected"
            },
            {
              "version": "8ca151b568b67a7b72dcfc6ee6ea7c107ddd795c",
              "lessThan": "fc14f5fe8a4374ed1088cfbddc1dae4d16c9935b",
              "versionType": "git",
              "status": "affected"
            },
            {
              "version": "8ca151b568b67a7b72dcfc6ee6ea7c107ddd795c",
              "lessThan": "4d942dfc13aec393e003ab28ff58db744c26e6eb",
              "versionType": "git",
              "status": "affected"
            },
            {
              "version": "8ca151b568b67a7b72dcfc6ee6ea7c107ddd795c",
              "lessThan": "8d70881707b47353359df57df12f6de67fdacdd2",
              "versionType": "git",
              "status": "affected"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "programFiles": [
            "drivers/net/wireless/intel/iwlwifi/mvm/tx.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "versions": [
            {
              "version": "3.9",
              "status": "affected"
            },
            {
              "version": "0",
              "lessThan": "3.9",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "6.1.191",
              "lessThanOrEqual": "6.1.*",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "6.6.160",
              "lessThanOrEqual": "6.6.*",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "6.12.111",
              "lessThanOrEqual": "6.12.*",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "6.18.53",
              "lessThanOrEqual": "6.18.*",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "7.2",
              "lessThanOrEqual": "*",
              "versionType": "original_commit_for_fix",
              "status": "unaffected"
            }
          ]
        }
      ]
    }
  ],
  "metrics": {
    "cvssMetricV31": [
      {
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "type": "Secondary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "baseScore": 8.8,
          "baseSeverity": "HIGH",
          "attackVector": "ADJACENT_NETWORK",
          "attackComplexity": "LOW",
          "privilegesRequired": "NONE",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "availabilityImpact": "HIGH"
        },
        "exploitabilityScore": 2.8,
        "impactScore": 5.9
      }
    ]
  },
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/4d942dfc13aec393e003ab28ff58db744c26e6eb",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/5e871c03506c529d5fe372d099c1ad1465c7bc38",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/658b5c00d653cdd72babc86791f6f6711190c740",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/8d70881707b47353359df57df12f6de67fdacdd2",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/fc14f5fe8a4374ed1088cfbddc1dae4d16c9935b",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ]
}