FKIE_CVE-2026-53182

Vulnerability from fkie_nvd - Published: 2026-06-25 09:16 - Updated: 2026-06-30 14:44
Severity
7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Summary
In the Linux kernel, the following vulnerability has been resolved: wifi: nl80211: reject oversized EMA RNR lists nl80211_parse_rnr_elems() stores the parsed element count in a u8-backed cfg80211_rnr_elems::cnt field and uses that count to size the flexible array allocation. Reject nested NL80211_ATTR_EMA_RNR_ELEMS input once the count reaches 255, before incrementing it again. This keeps the parser aligned with the data structure it fills and matches the existing bound check used by nl80211_parse_mbssid_elems().
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/265c07c09c837621730d35f02975207a1224bf05
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/30c3fa80f423613efdda3deca4af52ff7d20e4e2
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/4cd92957e8f8cc4ebfe8a5d4203c14c592fde6b1
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/688fcac7054abc680c0eef753f2bb772cfaf8cf7
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/ecbf3c45add30a0857414e156bdb9c79906f0ff6
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/fc0ec2fc02dfe52c5821f36fbccf6a45df43f508
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "net/wireless/nl80211.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "fc0ec2fc02dfe52c5821f36fbccf6a45df43f508",
              "status": "affected",
              "version": "56189d7bc30531def6b999f27940ee43c6ff2569",
              "versionType": "git"
            },
            {
              "lessThan": "688fcac7054abc680c0eef753f2bb772cfaf8cf7",
              "status": "affected",
              "version": "dbbb27e183b1568d5a907ace1cd144b0709ea52a",
              "versionType": "git"
            },
            {
              "lessThan": "30c3fa80f423613efdda3deca4af52ff7d20e4e2",
              "status": "affected",
              "version": "dbbb27e183b1568d5a907ace1cd144b0709ea52a",
              "versionType": "git"
            },
            {
              "lessThan": "265c07c09c837621730d35f02975207a1224bf05",
              "status": "affected",
              "version": "dbbb27e183b1568d5a907ace1cd144b0709ea52a",
              "versionType": "git"
            },
            {
              "lessThan": "ecbf3c45add30a0857414e156bdb9c79906f0ff6",
              "status": "affected",
              "version": "dbbb27e183b1568d5a907ace1cd144b0709ea52a",
              "versionType": "git"
            },
            {
              "lessThan": "4cd92957e8f8cc4ebfe8a5d4203c14c592fde6b1",
              "status": "affected",
              "version": "dbbb27e183b1568d5a907ace1cd144b0709ea52a",
              "versionType": "git"
            },
            {
              "lessThan": "6.1.176",
              "status": "affected",
              "version": "6.1.160",
              "versionType": "semver"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "net/wireless/nl80211.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.4"
            },
            {
              "lessThan": "6.4",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.176",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.143",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.94",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.36",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.0.*",
              "status": "unaffected",
              "version": "7.0.13",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.1",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: nl80211: reject oversized EMA RNR lists\n\nnl80211_parse_rnr_elems() stores the parsed element count in a\nu8-backed cfg80211_rnr_elems::cnt field and uses that count to size\nthe flexible array allocation.\n\nReject nested NL80211_ATTR_EMA_RNR_ELEMS input once the count reaches\n255, before incrementing it again. This keeps the parser aligned with\nthe data structure it fills and matches the existing bound check used\nby nl80211_parse_mbssid_elems()."
    }
  ],
  "id": "CVE-2026-53182",
  "lastModified": "2026-06-30T14:44:27.313",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 7.8,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 5.9,
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "type": "Secondary"
      }
    ]
  },
  "published": "2026-06-25T09:16:35.590",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/265c07c09c837621730d35f02975207a1224bf05"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/30c3fa80f423613efdda3deca4af52ff7d20e4e2"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/4cd92957e8f8cc4ebfe8a5d4203c14c592fde6b1"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/688fcac7054abc680c0eef753f2bb772cfaf8cf7"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/ecbf3c45add30a0857414e156bdb9c79906f0ff6"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/fc0ec2fc02dfe52c5821f36fbccf6a45df43f508"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Awaiting Analysis"
}


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