CVE-2026-90376 (GCVE-0-2026-90376)
Vulnerability from cvelistv5
Published
2026-09-17 16:09
Modified
2026-10-19 09:02
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: wifi: mt76: mt7996: fix MLD ID in MAC TXD and HIF TXP Problem: MCU command timeout while the firmware state is normal, and the firmware keeps showing the error log "ERROR!! NO PAUSE...". Root cause: If the MLD_ID field in the TXD is neither the primary link id nor the secondary link id, it may lead to a firmware busy loop when the third link is in power saving mode. Remap frames directed to a third link to the primary link wcid. Since TX status events and txfree completions carry the wcid the firmware saw, use the remapped wcid for packet id tracking and non-AQL packet accounting as well, while the frame keeps its original link context for addressing, band and OMAC selection.
References
Impacted products
Vendor Product Version
Linux Linux Version: d6f6b3a65660d183ef33f5a6582fd3b47174fe5a
Version: 85cd5534a3f2ec93e7d88713a77df5b4255520df
Version: 85cd5534a3f2ec93e7d88713a77df5b4255520df
Version: 6.18.33   ≤
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/wireless/mediatek/mt76/mt7996/mac.c",
            "drivers/net/wireless/mediatek/mt76/mt7996/main.c",
            "drivers/net/wireless/mediatek/mt76/mt7996/mt7996.h"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "5183b9f092fc0041618f38f895bd0ad860c26ca9",
              "status": "affected",
              "version": "d6f6b3a65660d183ef33f5a6582fd3b47174fe5a",
              "versionType": "git"
            },
            {
              "lessThan": "0a951ff6704db7b46c3f6d03b77e6053122be8ab",
              "status": "affected",
              "version": "85cd5534a3f2ec93e7d88713a77df5b4255520df",
              "versionType": "git"
            },
            {
              "lessThan": "ce35ecffc96e6d097d27b6fe30677a2cfe2e0461",
              "status": "affected",
              "version": "85cd5534a3f2ec93e7d88713a77df5b4255520df",
              "versionType": "git"
            },
            {
              "lessThan": "6.18.52",
              "status": "affected",
              "version": "6.18.33",
              "versionType": "semver"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/wireless/mediatek/mt76/mt7996/mac.c",
            "drivers/net/wireless/mediatek/mt76/mt7996/main.c",
            "drivers/net/wireless/mediatek/mt76/mt7996/mt7996.h"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.19"
            },
            {
              "lessThan": "6.19",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.52",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.2.*",
              "status": "unaffected",
              "version": "7.2.6",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.3",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.52",
                  "versionStartIncluding": "6.18.33",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.2.6",
                  "versionStartIncluding": "6.19",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.3",
                  "versionStartIncluding": "6.19",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mt76: mt7996: fix MLD ID in MAC TXD and HIF TXP\n\nProblem:\nMCU command timeout while the firmware state is normal, and the\nfirmware keeps showing the error log \"ERROR!! NO PAUSE...\".\n\nRoot cause:\nIf the MLD_ID field in the TXD is neither the primary link id nor the\nsecondary link id, it may lead to a firmware busy loop when the third\nlink is in power saving mode.\n\nRemap frames directed to a third link to the primary link wcid. Since\nTX status events and txfree completions carry the wcid the firmware\nsaw, use the remapped wcid for packet id tracking and non-AQL packet\naccounting as well, while the frame keeps its original link context\nfor addressing, band and OMAC selection."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-19T09:02:34.912Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/5183b9f092fc0041618f38f895bd0ad860c26ca9"
        },
        {
          "url": "https://git.kernel.org/stable/c/0a951ff6704db7b46c3f6d03b77e6053122be8ab"
        },
        {
          "url": "https://git.kernel.org/stable/c/ce35ecffc96e6d097d27b6fe30677a2cfe2e0461"
        }
      ],
      "title": "wifi: mt76: mt7996: fix MLD ID in MAC TXD and HIF TXP",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-90376",
    "datePublished": "2026-09-17T16:09:15.361Z",
    "dateReserved": "2026-09-11T19:38:34.808Z",
    "dateUpdated": "2026-10-19T09:02:34.912Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}


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