CVE-2026-23246 (GCVE-0-2026-23246)

Vulnerability from cvelistv5 – Published: 2026-03-18 10:05 – Updated: 2026-05-11 22:03
VLAI
Title
wifi: mac80211: bounds-check link_id in ieee80211_ml_reconfiguration
Summary
In the Linux kernel, the following vulnerability has been resolved: wifi: mac80211: bounds-check link_id in ieee80211_ml_reconfiguration link_id is taken from the ML Reconfiguration element (control & 0x000f), so it can be 0..15. link_removal_timeout[] has IEEE80211_MLD_MAX_NUM_LINKS (15) elements, so index 15 is out-of-bounds. Skip subelements with link_id >= IEEE80211_MLD_MAX_NUM_LINKS to avoid a stack out-of-bounds write.
Severity
8.8 (High)
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 8eb8dd2ffbbb6b0b8843b66754ee9f129f1b2d6c , < 650981e718e68005ca2760a6358134b8a98ebea4 (git)
Affected: 8eb8dd2ffbbb6b0b8843b66754ee9f129f1b2d6c , < bfde158d5d1322c0c2df398a8d1ccce04943be2e (git)
Affected: 8eb8dd2ffbbb6b0b8843b66754ee9f129f1b2d6c , < f35ceec54d48e227fa46f8f97fd100a77b8eab15 (git)
Affected: 8eb8dd2ffbbb6b0b8843b66754ee9f129f1b2d6c , < d58d71c2167601762351962b9604808d3be94400 (git)
Affected: 8eb8dd2ffbbb6b0b8843b66754ee9f129f1b2d6c , < 162d331d833dc73a3e905a24c44dd33732af1fc5 (git)
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Linux Linux Affected: 6.5
Unaffected: 0 , < 6.5 (semver)
Unaffected: 6.6.130 , ≤ 6.6.* (semver)
Unaffected: 6.12.77 , ≤ 6.12.* (semver)
Unaffected: 6.18.17 , ≤ 6.18.* (semver)
Unaffected: 6.19.7 , ≤ 6.19.* (semver)
Unaffected: 7.0 , ≤ * (original_commit_for_fix)
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{
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      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "net/mac80211/mlme.c"
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          "vendor": "Linux",
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          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mac80211: bounds-check link_id in ieee80211_ml_reconfiguration\n\nlink_id is taken from the ML Reconfiguration element (control \u0026 0x000f),\nso it can be 0..15. link_removal_timeout[] has IEEE80211_MLD_MAX_NUM_LINKS\n(15) elements, so index 15 is out-of-bounds. Skip subelements with\nlink_id \u003e= IEEE80211_MLD_MAX_NUM_LINKS to avoid a stack out-of-bounds\nwrite."
        }
      ],
      "metrics": [
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            "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"
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      "providerMetadata": {
        "dateUpdated": "2026-05-11T22:03:08.962Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
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        },
        {
          "url": "https://git.kernel.org/stable/c/162d331d833dc73a3e905a24c44dd33732af1fc5"
        }
      ],
      "title": "wifi: mac80211: bounds-check link_id in ieee80211_ml_reconfiguration",
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    "assignerShortName": "Linux",
    "cveId": "CVE-2026-23246",
    "datePublished": "2026-03-18T10:05:08.312Z",
    "dateReserved": "2026-01-13T15:37:45.989Z",
    "dateUpdated": "2026-05-11T22:03:08.962Z",
    "state": "PUBLISHED"
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    "epss": {
      "cve": "CVE-2026-23246",
      "date": "2026-05-29",
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      "percentile": "0.01778"
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  }
}


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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.

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  • 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.
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  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


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