CVE-2026-90354 (GCVE-0-2026-90354)

Vulnerability from cvelistv5 – Published: 2026-09-17 16:09 – Updated: 2026-10-19 09:02
VLAI
Title
wifi: mt76: mt7915: fix double hif2 init on the non-WED path
Summary
In the Linux kernel, the following vulnerability has been resolved: wifi: mt76: mt7915: fix double hif2 init on the non-WED path mt7915_pci_init_hif2() was called unconditionally and again inside the WED-inactive branch. The helper increments the global hif_idx, writes the PCIe RECOG_ID register and takes a get_device() reference via mt7915_pci_get_hif2(), while removal only drops one reference. On non-WED dual-hif hardware this double-incremented hif_idx, wrote RECOG_ID twice and leaked a device reference. Only the call inside the WED-inactive branch is correct; drop the unconditional one. hif2 is already initialised to NULL.
Severity
No CVSS data available.
Assigner
Linux CNA under the mitre root
CNA scorecard D 53/100 over 7061 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: cacdd67812c6df824704ac078f1770188a485ff9 , < eac18fadc791928379b179e54636494b92f8cf86 (git)
Affected: cacdd67812c6df824704ac078f1770188a485ff9 , < 927fe8c0eb8c10295bc0018c8faa4d91f8fe98c6 (git)
Affected: cacdd67812c6df824704ac078f1770188a485ff9 , < bd2e8f535ae35beb45a7fcc17ec9bbf8dc4db5fe (git)
Affected: cacdd67812c6df824704ac078f1770188a485ff9 , < 249cbaa1873550689fab136b74982cbba74c4169 (git)
Affected: cacdd67812c6df824704ac078f1770188a485ff9 , < 29fbc5256c2d8448f084ff179d2e5092ecd1fc54 (git)
Affected: cacdd67812c6df824704ac078f1770188a485ff9 , < 3ae8ad277e2819a281b0e36b55633c8515c16ce7 (git)
guessed Create a notification for this product.
Linux Linux Affected: 5.18
Unaffected: 0 , < 5.18 (semver)
Unaffected: 6.1.188 , ≤ 6.1.* (semver)
Unaffected: 6.6.157 , ≤ 6.6.* (semver)
Unaffected: 6.12.110 , ≤ 6.12.* (semver)
Unaffected: 6.18.52 , ≤ 6.18.* (semver)
Unaffected: 7.2.6 , ≤ 7.2.* (semver)
Unaffected: 7.3 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
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{
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          "product": "Linux",
          "programFiles": [
            "drivers/net/wireless/mediatek/mt76/mt7915/pci.c"
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              "versionType": "semver"
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              "status": "unaffected",
              "version": "7.3",
              "versionType": "original_commit_for_fix"
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      ],
      "cpeApplicability": [
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      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mt76: mt7915: fix double hif2 init on the non-WED path\n\nmt7915_pci_init_hif2() was called unconditionally and again inside the\nWED-inactive branch. The helper increments the global hif_idx, writes the\nPCIe RECOG_ID register and takes a get_device() reference via\nmt7915_pci_get_hif2(), while removal only drops one reference. On non-WED\ndual-hif hardware this double-incremented hif_idx, wrote RECOG_ID twice and\nleaked a device reference. Only the call inside the WED-inactive branch is\ncorrect; drop the unconditional one. hif2 is already initialised to NULL."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-19T09:02:10.824Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
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          "url": "https://git.kernel.org/stable/c/eac18fadc791928379b179e54636494b92f8cf86"
        },
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          "url": "https://git.kernel.org/stable/c/927fe8c0eb8c10295bc0018c8faa4d91f8fe98c6"
        },
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          "url": "https://git.kernel.org/stable/c/bd2e8f535ae35beb45a7fcc17ec9bbf8dc4db5fe"
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          "url": "https://git.kernel.org/stable/c/29fbc5256c2d8448f084ff179d2e5092ecd1fc54"
        },
        {
          "url": "https://git.kernel.org/stable/c/3ae8ad277e2819a281b0e36b55633c8515c16ce7"
        }
      ],
      "title": "wifi: mt76: mt7915: fix double hif2 init on the non-WED path",
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    "cveId": "CVE-2026-90354",
    "datePublished": "2026-09-17T16:09:00.880Z",
    "dateReserved": "2026-09-11T19:38:34.806Z",
    "dateUpdated": "2026-10-19T09:02:10.824Z",
    "state": "PUBLISHED"
  },
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  "dataVersion": "5.2",
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      "date": "2026-10-23",
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            "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mt76: mt7915: fix double hif2 init on the non-WED path\n\nmt7915_pci_init_hif2() was called unconditionally and again inside the\nWED-inactive branch. The helper increments the global hif_idx, writes the\nPCIe RECOG_ID register and takes a get_device() reference via\nmt7915_pci_get_hif2(), while removal only drops one reference. On non-WED\ndual-hif hardware this double-incremented hif_idx, wrote RECOG_ID twice and\nleaked a device reference. Only the call inside the WED-inactive branch is\ncorrect; drop the unconditional one. hif2 is already initialised to NULL."
          }
        ],
        "id": "CVE-2026-90354",
        "lastModified": "2026-10-19T09:19:29.410",
        "metrics": {},
        "published": "2026-09-17T17:17:34.260",
        "references": [
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    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-10-05T16:19:35+00:00",
      "cve": "CVE-2026-90354",
      "id": "CVE-2026-90354",
      "initial_release_date": "2026-09-17T00:00:00+00:00",
      "product_status:known_not_affected": "277",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: wifi: mt76: mt7915: fix double hif2 init on the non-WED path",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-90354.json",
      "version": "3"
    },
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      "aggregate_severity": "low",
      "current_release_date": "2026-10-20T00:36:49Z",
      "cve": "CVE-2026-90354",
      "id": "CVE-2026-90354",
      "initial_release_date": "2026-09-18T00:17:31Z",
      "product_status:known_affected": "32",
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      "product_status:recommended": "4",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2026-90354",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/2026/cve-2026-90354.json",
      "version": "5"
    }
  }
}



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