Vulnerability-Lookup

FKIE_CVE-2026-90380

Vulnerability from fkie_nvd - Published: 2026-09-17 17:17 - Updated: 2026-09-18 18:17

Severity

8.8 (High) - CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Summary

In the Linux kernel, the following vulnerability has been resolved: wifi: mt76: mt792x: fix use-after-free in mt76_rx_poll_complete A use-after-free issue occurs in mt76_rx_poll_complete due to a race condition. The STA has already been removed, but the rx_status still had a pointer to the wcid in the STA. Set the links' wcid pointers to be NULL for a MLD in mt7925_sta_pre_rcu_remove() BUG: KASAN: invalid-access in mt76_rx_poll_complete+0x280/0x470 Call trace: dump_backtrace+0xec/0x128 show_stack+0x18/0x28 dump_stack_lvl+0x40/0xc8 print_report+0x1b8/0x710 kasan_report+0xe0/0x144 do_bad_area+0x120/0x260 do_tag_check_fault+0x20/0x34 do_mem_abort+0x54/0xa8 el1_abort+0x3c/0x5c el1h_64_sync_handler+0x40/0xcc el1h_64_sync+0x7c/0x80 mt76_rx_poll_complete+0x280/0x470 mt76_dma_rx_poll+0x114/0x51c mt792x_poll_rx+0x60/0xf8 napi_threaded_poll_loop+0xe0/0x450 napi_threaded_poll+0x80/0x9c kthread+0x11c/0x158 ret_from_fork+0x10/0x20

References

	URL	Tags
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/217f9e7bb02558759be9d9ecfe532e9708741c50
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/aaf414bf81ab4b680580871784b0b929818188eb
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/b250943f3f8351385a17972bda001664a5c51008

Impacted products

	Vendor	Product	Version

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/wireless/mediatek/mt76/mt7925/main.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "aaf414bf81ab4b680580871784b0b929818188eb",
              "status": "affected",
              "version": "c948b5da6bbec742b433138e3e3f9537a85af2e5",
              "versionType": "git"
            },
            {
              "lessThan": "b250943f3f8351385a17972bda001664a5c51008",
              "status": "affected",
              "version": "c948b5da6bbec742b433138e3e3f9537a85af2e5",
              "versionType": "git"
            },
            {
              "lessThan": "217f9e7bb02558759be9d9ecfe532e9708741c50",
              "status": "affected",
              "version": "c948b5da6bbec742b433138e3e3f9537a85af2e5",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/wireless/mediatek/mt76/mt7925/main.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.7"
            },
            {
              "lessThan": "6.7",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.110",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.2.*",
              "status": "unaffected",
              "version": "7.2.6",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.3-rc1",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mt76: mt792x: fix use-after-free in mt76_rx_poll_complete\n\nA use-after-free issue occurs in mt76_rx_poll_complete due to a race\ncondition. The STA has already been removed, but the rx_status still\nhad a pointer to the wcid in the STA.\n\nSet the links\u0027 wcid pointers to be NULL for a MLD in\nmt7925_sta_pre_rcu_remove()\n\nBUG: KASAN: invalid-access in mt76_rx_poll_complete+0x280/0x470\nCall trace:\ndump_backtrace+0xec/0x128\nshow_stack+0x18/0x28\ndump_stack_lvl+0x40/0xc8\nprint_report+0x1b8/0x710\nkasan_report+0xe0/0x144\ndo_bad_area+0x120/0x260\ndo_tag_check_fault+0x20/0x34\ndo_mem_abort+0x54/0xa8\nel1_abort+0x3c/0x5c\nel1h_64_sync_handler+0x40/0xcc\nel1h_64_sync+0x7c/0x80\nmt76_rx_poll_complete+0x280/0x470\nmt76_dma_rx_poll+0x114/0x51c\nmt792x_poll_rx+0x60/0xf8\nnapi_threaded_poll_loop+0xe0/0x450\nnapi_threaded_poll+0x80/0x9c\nkthread+0x11c/0x158\nret_from_fork+0x10/0x20"
    }
  ],
  "id": "CVE-2026-90380",
  "lastModified": "2026-09-18T18:17:56.080",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "ADJACENT_NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 8.8,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 2.8,
        "impactScore": 5.9,
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "type": "Secondary"
      }
    ]
  },
  "published": "2026-09-17T17:17:37.297",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/217f9e7bb02558759be9d9ecfe532e9708741c50"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/aaf414bf81ab4b680580871784b0b929818188eb"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/b250943f3f8351385a17972bda001664a5c51008"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Received"
}

CVE-2026-90380 (GCVE-0-2026-90380)

Vulnerability from cvelistv5 – Published: 2026-09-17 16:09 – Updated: 2026-09-18 17:54

Title

wifi: mt76: mt792x: fix use-after-free in mt76_rx_poll_complete

Summary

Severity

8.8 (High)


                        
                          CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Assigner

Linux mitre root

References

3 references

URL	Tags
https://git.kernel.org/stable/c/aaf414bf81ab4b680…
https://git.kernel.org/stable/c/b250943f3f8351385…
https://git.kernel.org/stable/c/217f9e7bb02558759…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: c948b5da6bbec742b433138e3e3f9537a85af2e5 , < aaf414bf81ab4b680580871784b0b929818188eb (git) Affected: c948b5da6bbec742b433138e3e3f9537a85af2e5 , < b250943f3f8351385a17972bda001664a5c51008 (git) Affected: c948b5da6bbec742b433138e3e3f9537a85af2e5 , < 217f9e7bb02558759be9d9ecfe532e9708741c50 (git)
Linux	Linux	Affected: 6.7 Unaffected: 0 , < 6.7 (semver) Unaffected: 6.12.110 , ≤ 6.12.* (semver) Unaffected: 7.2.6 , ≤ 7.2.* (semver) Unaffected: 7.3-rc1 , ≤ * (original_commit_for_fix)

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/wireless/mediatek/mt76/mt7925/main.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "aaf414bf81ab4b680580871784b0b929818188eb",
              "status": "affected",
              "version": "c948b5da6bbec742b433138e3e3f9537a85af2e5",
              "versionType": "git"
            },
            {
              "lessThan": "b250943f3f8351385a17972bda001664a5c51008",
              "status": "affected",
              "version": "c948b5da6bbec742b433138e3e3f9537a85af2e5",
              "versionType": "git"
            },
            {
              "lessThan": "217f9e7bb02558759be9d9ecfe532e9708741c50",
              "status": "affected",
              "version": "c948b5da6bbec742b433138e3e3f9537a85af2e5",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/wireless/mediatek/mt76/mt7925/main.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.7"
            },
            {
              "lessThan": "6.7",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.110",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.2.*",
              "status": "unaffected",
              "version": "7.2.6",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.3-rc1",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.110",
                  "versionStartIncluding": "6.7",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.2.6",
                  "versionStartIncluding": "6.7",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.3-rc1",
                  "versionStartIncluding": "6.7",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mt76: mt792x: fix use-after-free in mt76_rx_poll_complete\n\nA use-after-free issue occurs in mt76_rx_poll_complete due to a race\ncondition. The STA has already been removed, but the rx_status still\nhad a pointer to the wcid in the STA.\n\nSet the links\u0027 wcid pointers to be NULL for a MLD in\nmt7925_sta_pre_rcu_remove()\n\nBUG: KASAN: invalid-access in mt76_rx_poll_complete+0x280/0x470\nCall trace:\ndump_backtrace+0xec/0x128\nshow_stack+0x18/0x28\ndump_stack_lvl+0x40/0xc8\nprint_report+0x1b8/0x710\nkasan_report+0xe0/0x144\ndo_bad_area+0x120/0x260\ndo_tag_check_fault+0x20/0x34\ndo_mem_abort+0x54/0xa8\nel1_abort+0x3c/0x5c\nel1h_64_sync_handler+0x40/0xcc\nel1h_64_sync+0x7c/0x80\nmt76_rx_poll_complete+0x280/0x470\nmt76_dma_rx_poll+0x114/0x51c\nmt792x_poll_rx+0x60/0xf8\nnapi_threaded_poll_loop+0xe0/0x450\nnapi_threaded_poll+0x80/0x9c\nkthread+0x11c/0x158\nret_from_fork+0x10/0x20"
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 8.8,
            "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"
          },
          "scenarios": [
            {
              "lang": "en",
              "value": "AV:A - An 802.11be MLO peer\u0027s frames are DMA\u0027d into mt792x_poll_rx\u2192mt76_dma_rx_poll\u2192mt7925_queue_rx_skb\u2192mt7925_mac_fill_rx, which stores status-\u003ewcid from MT_RXD1_NORMAL_WLAN_IDX via mt792x_rx_get_wcid(); those bytes arrive over WiFi radio, which is adjacent rather than a routable IP transport.\nAC:L - The attacker drives both sides: data frames on a non-default MLO link keep mt76_rx_poll_complete using a secondary mt792x_link_sta.wcid that mt76_sta_pre_rcu_remove never NULLs, while a deauth/disassoc runs __sta_info_destroy. mt7925_mac_link_sta_remove then sleeps in MCU commands before clearing that idx, so the race is attacker-retryable.\nPR:N - mt76_rx_poll_complete and ieee80211_rx_mgmt_deauth\u2192ieee80211_set_disassoc run on the WiFi RX path with no Linux credential or capability check; a radio-range MLO AP sending deauth plus data is enough, with no local account on the mt7925 client.\nUI:N - Once the mt7925 station VIF is already in an MLO association (WIPHY_FLAG_SUPPORTS_MLO is set only for NL80211_IFTYPE_STATION), the attacker triggers STA teardown and the concurrent RX by transmitting; no mount, click, or other victim action is required at exploit time.\nS:U - The UAF is of the mt792x_link_sta.wcid published in dev-\u003ewcid[] and later used in mt76_check_sta/mt76_rx_complete inside this host kernel; it does not cross a VM, IOMMU, or guest/host boundary.\nC:H - After the MLD STA is freed, mt76_check_sta and mt76_rx_convert still dereference status-\u003ewcid (wcid-\u003esta, wcid-\u003elink_valid/link_id, wcid_to_sta()) from skb-\u003ecb, a use-after-free of the attacker-reallocatable mt792x_link_sta that enables arbitrary kernel reads.\nI:H - The same dangling wcid is written in mt76_check_sta (ewma_signal_add, wcid-\u003einactive_count, PS flag bits) and in mt76_check_ccmp_pn (memcpy into wcid-\u003erx_key_pn[] from the frame IV), giving a kernel write primitive through the freed mt792x_link_sta.\nA:H - KASAN already reports invalid-access in mt76_rx_poll_complete when the RX NAPI uses the freed wcid after STA removal; that use-after-free oopses or panics the kernel even without a full exploit."
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-09-18T17:54:57.266Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/aaf414bf81ab4b680580871784b0b929818188eb"
        },
        {
          "url": "https://git.kernel.org/stable/c/b250943f3f8351385a17972bda001664a5c51008"
        },
        {
          "url": "https://git.kernel.org/stable/c/217f9e7bb02558759be9d9ecfe532e9708741c50"
        }
      ],
      "title": "wifi: mt76: mt792x: fix use-after-free in mt76_rx_poll_complete",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-90380",
    "datePublished": "2026-09-17T16:09:17.948Z",
    "dateReserved": "2026-09-11T19:38:34.809Z",
    "dateUpdated": "2026-09-18T17:54:57.266Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

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.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

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FKIE_CVE-2026-90380

CVE-2026-90380 (GCVE-0-2026-90380)

Tags

Sightings

Nomenclature

Related by attack behaviour