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GHSA-44R6-7479-RJM3

Vulnerability from github – Published: 2026-10-23 15:31 – Updated: 2026-10-23 15:31

Details

In the Linux kernel, the following vulnerability has been resolved:

wifi: mt76: mt7915: disable rx napi when removing device

Unloading the mt7915e module with a MT7916 triggers multiples WARN in __netif_napi_del_locked() and in page_pool_disable_direct_recycling() because the driver does not disable the napi before destroying it.

This is troublesome since on MT7916 it is required to unload the module and reinsert it with a different enable_6ghz parameter to change the frequency. The system generally becomes unstable after reinserting the module.

Fix it by disabling rx napi inside mt7915e itself, even through napi rx is enabled in the mt76 generic code. Disabling it in the mt76 generic code was previously attempted and reverted because napi was disabled too late and rx handlers could access freed structures. Note that the tx side is enabled and disabled by the mt76 generic code.

It is disabled in mt7915_stop_hardware() since, unlike mt7915_unregister_device(), is it also called in the probe path if an error happens after rx napi is enabled.

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{
  "affected": [],
  "aliases": [
    "CVE-2026-98957"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-10-23T13:17:17Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mt76: mt7915: disable rx napi when removing device\n\nUnloading the mt7915e module with a MT7916 triggers multiples WARN in\n__netif_napi_del_locked() and in page_pool_disable_direct_recycling()\nbecause the driver does not disable the napi before destroying it.\n\nThis is troublesome since on MT7916 it is required to unload the module\nand reinsert it with a different enable_6ghz parameter to change the\nfrequency.  The system generally becomes unstable after reinserting the\nmodule.\n\nFix it by disabling rx napi inside mt7915e itself, even through napi rx is\nenabled in the mt76 generic code.  Disabling it in the mt76 generic code\nwas previously attempted and reverted because napi was disabled too\nlate and rx handlers could access freed structures.  Note that the tx\nside is enabled and disabled by the mt76 generic code.\n\nIt is disabled in mt7915_stop_hardware() since, unlike\nmt7915_unregister_device(), is it also called in the probe path if an\nerror happens after rx napi is enabled.",
  "id": "GHSA-44r6-7479-rjm3",
  "modified": "2026-10-23T15:31:32Z",
  "published": "2026-10-23T15:31:32Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-98957"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0281dac1e213329b053fb02e612de7f1477a52d7"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0f9afe238eeb79829f0f92f376ba3a20781caccd"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/7199ee4b47de0b61fa6455a1587c5ab645ebe262"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/916c484d29d82f45c281da2786fcd6a1284430ce"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

CVE-2026-98957 (GCVE-0-2026-98957)

Vulnerability from cvelistv5 – Published: 2026-10-23 12:19 – Updated: 2026-10-23 12:19

Title

wifi: mt76: mt7915: disable rx napi when removing device

Summary

In the Linux kernel, the following vulnerability has been resolved: wifi: mt76: mt7915: disable rx napi when removing device Unloading the mt7915e module with a MT7916 triggers multiples WARN in __netif_napi_del_locked() and in page_pool_disable_direct_recycling() because the driver does not disable the napi before destroying it. This is troublesome since on MT7916 it is required to unload the module and reinsert it with a different enable_6ghz parameter to change the frequency. The system generally becomes unstable after reinserting the module. Fix it by disabling rx napi inside mt7915e itself, even through napi rx is enabled in the mt76 generic code. Disabling it in the mt76 generic code was previously attempted and reverted because napi was disabled too late and rx handlers could access freed structures. Note that the tx side is enabled and disabled by the mt76 generic code. It is disabled in mt7915_stop_hardware() since, unlike mt7915_unregister_device(), is it also called in the probe path if an error happens after rx napi is enabled.

Severity

No CVSS data available.

Assigner

Linux CNA under the mitre root

CNA scorecard D 53/100 over 7063 records in the last 180 days details

References

4 references

URL	Tags
https://git.kernel.org/stable/c/0281dac1e213329b0…
https://git.kernel.org/stable/c/0f9afe238eeb79829…
https://git.kernel.org/stable/c/7199ee4b47de0b61f…
https://git.kernel.org/stable/c/916c484d29d82f45c…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: e57b7901469fc0b021930b83a8094baaf3d81b09 , < 0281dac1e213329b053fb02e612de7f1477a52d7 (git) Affected: e57b7901469fc0b021930b83a8094baaf3d81b09 , < 0f9afe238eeb79829f0f92f376ba3a20781caccd (git) Affected: e57b7901469fc0b021930b83a8094baaf3d81b09 , < 7199ee4b47de0b61fa6455a1587c5ab645ebe262 (git) Affected: e57b7901469fc0b021930b83a8094baaf3d81b09 , < 916c484d29d82f45c281da2786fcd6a1284430ce (git)
Linux	Linux	Affected: 5.8 Unaffected: 0 , < 5.8 (semver) Unaffected: 6.12.113 , ≤ 6.12.* (semver) Unaffected: 6.18.57 , ≤ 6.18.* (semver) Unaffected: 7.2.11 , ≤ 7.2.* (semver) Unaffected: 7.3 , ≤ * (original_commit_for_fix)

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JSON

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        {
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          "programFiles": [
            "drivers/net/wireless/mediatek/mt76/mt7915/init.c"
          ],
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          "versions": [
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            },
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          ],
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              "versionType": "semver"
            },
            {
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            },
            {
              "lessThanOrEqual": "7.2.*",
              "status": "unaffected",
              "version": "7.2.11",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
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          ]
        }
      ],
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    "datePublished": "2026-10-23T12:19:22.400Z",
    "dateReserved": "2026-09-25T10:25:14.382Z",
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}

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.

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