CVE-2026-90350 (GCVE-0-2026-90350)

Vulnerability from cvelistv5 – Published: 2026-09-17 16:08 – Updated: 2026-09-17 16:08
VLAI
Title
wifi: mt76: reject out-of-range link ids in mt76_vif_link()
Summary
In the Linux kernel, the following vulnerability has been resolved: wifi: mt76: reject out-of-range link ids in mt76_vif_link() mt76_vif_link() indexes mvif->link[] without validating link_id, but callers pass mvif->deflink_id / msta->deflink_id, which hold IEEE80211_LINK_UNSPECIFIED (0xf) until the first link has been added. Since IEEE80211_MLD_MAX_NUM_LINKS is 15, that reads one element past the end of the array, aliasing mt76_vif_data.offchannel_link. Reachable via mt7996_set_tsf()/mt7996_offset_tsf() and mt7996_net_fill_forward_path(). Bounds check link_id and return NULL, matching mt7996_sta_link() and mt7996_sta_link_protected().
Severity
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: a9384b36a42afc2d715eb74c19a7ee558f09ef82 , < 13f6a9c786022d5213e84d494cc8717c378f5395 (git)
Affected: a9384b36a42afc2d715eb74c19a7ee558f09ef82 , < c1442c345ca8da857fadea1d0797b97347ab6984 (git)
Affected: a9384b36a42afc2d715eb74c19a7ee558f09ef82 , < 9ba744a28c26eaa5cae930688a22e01888395308 (git)
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Linux Linux Affected: 6.15
Unaffected: 0 , < 6.15 (semver)
Unaffected: 6.18.52 , ≤ 6.18.* (semver)
Unaffected: 7.2.6 , ≤ 7.2.* (semver)
Unaffected: 7.3-rc1 , ≤ * (original_commit_for_fix)
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{
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          "product": "Linux",
          "programFiles": [
            "drivers/net/wireless/mediatek/mt76/mt76.h"
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              "operator": "OR"
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      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mt76: reject out-of-range link ids in mt76_vif_link()\n\nmt76_vif_link() indexes mvif-\u003elink[] without validating link_id, but\ncallers pass mvif-\u003edeflink_id / msta-\u003edeflink_id, which hold\nIEEE80211_LINK_UNSPECIFIED (0xf) until the first link has been added.\nSince IEEE80211_MLD_MAX_NUM_LINKS is 15, that reads one element past the\nend of the array, aliasing mt76_vif_data.offchannel_link.\n\nReachable via mt7996_set_tsf()/mt7996_offset_tsf() and\nmt7996_net_fill_forward_path(). Bounds check link_id and return NULL,\nmatching mt7996_sta_link() and mt7996_sta_link_protected()."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-09-17T16:08:58.226Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
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          "url": "https://git.kernel.org/stable/c/13f6a9c786022d5213e84d494cc8717c378f5395"
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          "url": "https://git.kernel.org/stable/c/c1442c345ca8da857fadea1d0797b97347ab6984"
        },
        {
          "url": "https://git.kernel.org/stable/c/9ba744a28c26eaa5cae930688a22e01888395308"
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      ],
      "title": "wifi: mt76: reject out-of-range link ids in mt76_vif_link()",
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    "cveId": "CVE-2026-90350",
    "datePublished": "2026-09-17T16:08:58.226Z",
    "dateReserved": "2026-09-11T19:38:34.805Z",
    "dateUpdated": "2026-09-17T16:08:58.226Z",
    "state": "PUBLISHED"
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                "programFiles": [
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          {
            "lang": "en",
            "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mt76: reject out-of-range link ids in mt76_vif_link()\n\nmt76_vif_link() indexes mvif-\u003elink[] without validating link_id, but\ncallers pass mvif-\u003edeflink_id / msta-\u003edeflink_id, which hold\nIEEE80211_LINK_UNSPECIFIED (0xf) until the first link has been added.\nSince IEEE80211_MLD_MAX_NUM_LINKS is 15, that reads one element past the\nend of the array, aliasing mt76_vif_data.offchannel_link.\n\nReachable via mt7996_set_tsf()/mt7996_offset_tsf() and\nmt7996_net_fill_forward_path(). Bounds check link_id and return NULL,\nmatching mt7996_sta_link() and mt7996_sta_link_protected()."
          }
        ],
        "id": "CVE-2026-90350",
        "lastModified": "2026-09-17T17:17:33.810",
        "metrics": {},
        "published": "2026-09-17T17:17:33.810",
        "references": [
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        ],
        "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "vulnStatus": "Received"
      }
    }
  }
}



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