CVE-2026-93789 (GCVE-0-2026-93789)
Vulnerability from cvelistv5
Published
2026-09-24 16:02
Modified
2026-10-03 10:57
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: wifi: iwlwifi: bound aligned TLV advance in FW parser Validate ALIGN(tlv_len, 4) against remaining parser length before consuming bytes from the firmware image. This avoids length underflow on malformed TLVs.
References
Impacted products
Vendor Product Version
Linux Linux Version: dd7a2509b3a79b290730a9c6a784bf03fedabb9a
Version: dd7a2509b3a79b290730a9c6a784bf03fedabb9a
Version: dd7a2509b3a79b290730a9c6a784bf03fedabb9a
Version: dd7a2509b3a79b290730a9c6a784bf03fedabb9a
Version: dd7a2509b3a79b290730a9c6a784bf03fedabb9a
Version: dd7a2509b3a79b290730a9c6a784bf03fedabb9a
Version: dd7a2509b3a79b290730a9c6a784bf03fedabb9a
 Create a notification for this product.
Show details on NVD website

To clipboard 

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/wireless/intel/iwlwifi/iwl-drv.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "61da42fdd21d98ccb8f1ec5224659f3d09202cf4",
              "status": "affected",
              "version": "dd7a2509b3a79b290730a9c6a784bf03fedabb9a",
              "versionType": "git"
            },
            {
              "lessThan": "8c332d45b736d41301b7e07f322785d821265dbc",
              "status": "affected",
              "version": "dd7a2509b3a79b290730a9c6a784bf03fedabb9a",
              "versionType": "git"
            },
            {
              "lessThan": "ce709fcab5e1d4df6d4ba980736dc5908502a40f",
              "status": "affected",
              "version": "dd7a2509b3a79b290730a9c6a784bf03fedabb9a",
              "versionType": "git"
            },
            {
              "lessThan": "4cfadb2e01566bc36d42922fbe18838345087050",
              "status": "affected",
              "version": "dd7a2509b3a79b290730a9c6a784bf03fedabb9a",
              "versionType": "git"
            },
            {
              "lessThan": "528fa9eb14c209533ca26958b76da55e0ce239d8",
              "status": "affected",
              "version": "dd7a2509b3a79b290730a9c6a784bf03fedabb9a",
              "versionType": "git"
            },
            {
              "lessThan": "7aa9097623afb694bc25382a62e14d8e82bf002f",
              "status": "affected",
              "version": "dd7a2509b3a79b290730a9c6a784bf03fedabb9a",
              "versionType": "git"
            },
            {
              "lessThan": "acad742714bdc70e7fd7f234323807c596828213",
              "status": "affected",
              "version": "dd7a2509b3a79b290730a9c6a784bf03fedabb9a",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/wireless/intel/iwlwifi/iwl-drv.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "2.6.35"
            },
            {
              "lessThan": "2.6.35",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.271",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.222",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.189",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.158",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.111",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.53",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.2",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.10.271",
                  "versionStartIncluding": "2.6.35",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.15.222",
                  "versionStartIncluding": "2.6.35",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.189",
                  "versionStartIncluding": "2.6.35",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.158",
                  "versionStartIncluding": "2.6.35",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.111",
                  "versionStartIncluding": "2.6.35",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.53",
                  "versionStartIncluding": "2.6.35",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.2",
                  "versionStartIncluding": "2.6.35",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: iwlwifi: bound aligned TLV advance in FW parser\n\nValidate ALIGN(tlv_len, 4) against remaining parser length before\nconsuming bytes from the firmware image.\n\nThis avoids length underflow on malformed TLVs."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-03T10:57:24.712Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/61da42fdd21d98ccb8f1ec5224659f3d09202cf4"
        },
        {
          "url": "https://git.kernel.org/stable/c/8c332d45b736d41301b7e07f322785d821265dbc"
        },
        {
          "url": "https://git.kernel.org/stable/c/ce709fcab5e1d4df6d4ba980736dc5908502a40f"
        },
        {
          "url": "https://git.kernel.org/stable/c/4cfadb2e01566bc36d42922fbe18838345087050"
        },
        {
          "url": "https://git.kernel.org/stable/c/528fa9eb14c209533ca26958b76da55e0ce239d8"
        },
        {
          "url": "https://git.kernel.org/stable/c/7aa9097623afb694bc25382a62e14d8e82bf002f"
        },
        {
          "url": "https://git.kernel.org/stable/c/acad742714bdc70e7fd7f234323807c596828213"
        }
      ],
      "title": "wifi: iwlwifi: bound aligned TLV advance in FW parser",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-93789",
    "datePublished": "2026-09-24T16:02:23.252Z",
    "dateReserved": "2026-09-18T17:59:28.788Z",
    "dateUpdated": "2026-10-03T10:57:24.712Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}


Log in or create an account to share your comment.




Tags
Taxonomy of the tags.




Sightings

Author Source Type Date

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
  • Confirmed: The vulnerability is confirmed from an analyst perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
  • Patched: This vulnerability was successfully patched by the user reporting the sighting.
  • Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
  • Not confirmed: The user expresses doubt about the veracity of the vulnerability.
  • Not patched: This vulnerability was not successfully patched by the user reporting the sighting.