Vulnerability-Lookup

FKIE_CVE-2026-46166

Vulnerability from fkie_nvd - Published: 2026-05-28 10:16 - Updated: 2026-05-30 11:17

Severity

8.8 (High) - CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Summary

In the Linux kernel, the following vulnerability has been resolved: wifi: mac80211: use safe list iteration in radar detect work The call to ieee80211_dfs_cac_cancel can cause the iterated chanctx to be freed and removed from the list. Guard against this to avoid a slab-use-after-free error.

References

	URL	Tags
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/120149fb3ebcf674832ca3cafd32bedcdb686dde
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/7577a4b8a10fab45a6ee2045ea038a5adadbb585
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/887ece6c23b49d02a6678e7a8d5ad213d75883ce
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/ac8eb3e18f41e2cc8492cc1d358bcb786c850270

Impacted products

	Vendor	Product	Version

JSON

To clipboard

{
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mac80211: use safe list iteration in radar detect work\n\nThe call to ieee80211_dfs_cac_cancel can cause the iterated chanctx to\nbe freed and removed from the list. Guard against this to avoid a\nslab-use-after-free error."
    }
  ],
  "id": "CVE-2026-46166",
  "lastModified": "2026-05-30T11:17:24.640",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "ADJACENT_NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 8.8,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 2.8,
        "impactScore": 5.9,
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "type": "Secondary"
      }
    ]
  },
  "published": "2026-05-28T10:16:32.250",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/120149fb3ebcf674832ca3cafd32bedcdb686dde"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/7577a4b8a10fab45a6ee2045ea038a5adadbb585"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/887ece6c23b49d02a6678e7a8d5ad213d75883ce"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/ac8eb3e18f41e2cc8492cc1d358bcb786c850270"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Awaiting Analysis"
}

CVE-2026-46166 (GCVE-0-2026-46166)

Vulnerability from cvelistv5 – Published: 2026-05-28 09:36 – Updated: 2026-05-30 10:48

Title

wifi: mac80211: use safe list iteration in radar detect work

Summary

Severity

8.8 (High)


                        
                          CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Assigner

Linux

References

4 references

URL	Tags
https://git.kernel.org/stable/c/887ece6c23b49d02a…
https://git.kernel.org/stable/c/7577a4b8a10fab45a…
https://git.kernel.org/stable/c/120149fb3ebcf6748…
https://git.kernel.org/stable/c/ac8eb3e18f41e2cc8…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: bca8bc0399ac2efd56e6adbed0307e10125a556c , < 887ece6c23b49d02a6678e7a8d5ad213d75883ce (git) Affected: bca8bc0399ac2efd56e6adbed0307e10125a556c , < 7577a4b8a10fab45a6ee2045ea038a5adadbb585 (git) Affected: bca8bc0399ac2efd56e6adbed0307e10125a556c , < 120149fb3ebcf674832ca3cafd32bedcdb686dde (git) Affected: bca8bc0399ac2efd56e6adbed0307e10125a556c , < ac8eb3e18f41e2cc8492cc1d358bcb786c850270 (git)
Linux	Linux	Affected: 6.12 Unaffected: 0 , < 6.12 (semver) Unaffected: 6.12.88 , ≤ 6.12.* (semver) Unaffected: 6.18.30 , ≤ 6.18.* (semver) Unaffected: 7.0.7 , ≤ 7.0.* (semver) Unaffected: 7.1-rc3 , ≤ * (original_commit_for_fix)

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "net/mac80211/util.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "887ece6c23b49d02a6678e7a8d5ad213d75883ce",
              "status": "affected",
              "version": "bca8bc0399ac2efd56e6adbed0307e10125a556c",
              "versionType": "git"
            },
            {
              "lessThan": "7577a4b8a10fab45a6ee2045ea038a5adadbb585",
              "status": "affected",
              "version": "bca8bc0399ac2efd56e6adbed0307e10125a556c",
              "versionType": "git"
            },
            {
              "lessThan": "120149fb3ebcf674832ca3cafd32bedcdb686dde",
              "status": "affected",
              "version": "bca8bc0399ac2efd56e6adbed0307e10125a556c",
              "versionType": "git"
            },
            {
              "lessThan": "ac8eb3e18f41e2cc8492cc1d358bcb786c850270",
              "status": "affected",
              "version": "bca8bc0399ac2efd56e6adbed0307e10125a556c",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "net/mac80211/util.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.12"
            },
            {
              "lessThan": "6.12",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.88",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.30",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.0.*",
              "status": "unaffected",
              "version": "7.0.7",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.1-rc3",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.88",
                  "versionStartIncluding": "6.12",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.30",
                  "versionStartIncluding": "6.12",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.0.7",
                  "versionStartIncluding": "6.12",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.1-rc3",
                  "versionStartIncluding": "6.12",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mac80211: use safe list iteration in radar detect work\n\nThe call to ieee80211_dfs_cac_cancel can cause the iterated chanctx to\nbe freed and removed from the list. Guard against this to avoid a\nslab-use-after-free error."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 8.8,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          }
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-30T10:48:34.343Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/887ece6c23b49d02a6678e7a8d5ad213d75883ce"
        },
        {
          "url": "https://git.kernel.org/stable/c/7577a4b8a10fab45a6ee2045ea038a5adadbb585"
        },
        {
          "url": "https://git.kernel.org/stable/c/120149fb3ebcf674832ca3cafd32bedcdb686dde"
        },
        {
          "url": "https://git.kernel.org/stable/c/ac8eb3e18f41e2cc8492cc1d358bcb786c850270"
        }
      ],
      "title": "wifi: mac80211: use safe list iteration in radar detect work",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-46166",
    "datePublished": "2026-05-28T09:36:21.675Z",
    "dateReserved": "2026-05-13T15:03:33.102Z",
    "dateUpdated": "2026-05-30T10:48:34.343Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

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.

Action not permitted

FKIE_CVE-2026-46166

CVE-2026-46166 (GCVE-0-2026-46166)

Tags

Sightings

Nomenclature