Vulnerability-Lookup

GHSA-GJGV-497V-VQ7G

Vulnerability from github – Published: 2025-10-04 18:31 – Updated: 2026-02-05 18:30

Details

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

wifi: mt76: mt76x0: fix oob access in mt76x0_phy_get_target_power

After 'commit ba45841ca5eb ("wifi: mt76: mt76x02: simplify struct mt76x02_rate_power")', mt76x02 relies on ht[0-7] rate_power data for vht mcs{0,7}, while it uses vth[0-1] rate_power for vht mcs {8,9}. Fix a possible out-of-bound access in mt76x0_phy_get_target_power routine.

Severity

7.1 (High)


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

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{
  "affected": [],
  "aliases": [
    "CVE-2022-50508"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-125"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-10-04T16:15:48Z",
    "severity": "HIGH"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mt76: mt76x0: fix oob access in mt76x0_phy_get_target_power\n\nAfter \u0027commit ba45841ca5eb (\"wifi: mt76: mt76x02: simplify struct\nmt76x02_rate_power\")\u0027, mt76x02 relies on ht[0-7] rate_power data for\nvht mcs{0,7}, while it uses vth[0-1] rate_power for vht mcs {8,9}.\nFix a possible out-of-bound access in mt76x0_phy_get_target_power routine.",
  "id": "GHSA-gjgv-497v-vq7g",
  "modified": "2026-02-05T18:30:28Z",
  "published": "2025-10-04T18:31:14Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-50508"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/6e1abc51c945663bddebfa1beb9590ff5b250eb7"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/bf425c5d7ef6fb4083c1e0d46440f886127b5ee5"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2022-50508 (GCVE-0-2022-50508)

Vulnerability from cvelistv5 – Published: 2025-10-04 15:43 – Updated: 2026-08-05 08:59

Title

wifi: mt76: mt76x0: fix oob access in mt76x0_phy_get_target_power

Summary

In the Linux kernel, the following vulnerability has been resolved: wifi: mt76: mt76x0: fix oob access in mt76x0_phy_get_target_power After 'commit ba45841ca5eb ("wifi: mt76: mt76x02: simplify struct mt76x02_rate_power")', mt76x02 relies on ht[0-7] rate_power data for vht mcs{0,7}, while it uses vth[0-1] rate_power for vht mcs {8,9}. Fix a possible out-of-bound access in mt76x0_phy_get_target_power routine.

Severity

7.1 (High)


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

Assigner

Linux mitre root Scorecard

References

2 references

URL	Tags
https://git.kernel.org/stable/c/bf425c5d7ef6fb408…
https://git.kernel.org/stable/c/6e1abc51c945663bd…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: ba45841ca5eb29245f9c9f452a39586d9d68bc12 , < bf425c5d7ef6fb4083c1e0d46440f886127b5ee5 (git) Affected: ba45841ca5eb29245f9c9f452a39586d9d68bc12 , < 6e1abc51c945663bddebfa1beb9590ff5b250eb7 (git)
Linux	Linux	Affected: 6.2 Unaffected: 0 , < 6.2 (semver) Unaffected: 6.2.3 , ≤ 6.2.* (semver) Unaffected: 6.3 , ≤ * (original_commit_for_fix)

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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/wireless/mediatek/mt76/mt76x0/phy.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "bf425c5d7ef6fb4083c1e0d46440f886127b5ee5",
              "status": "affected",
              "version": "ba45841ca5eb29245f9c9f452a39586d9d68bc12",
              "versionType": "git"
            },
            {
              "lessThan": "6e1abc51c945663bddebfa1beb9590ff5b250eb7",
              "status": "affected",
              "version": "ba45841ca5eb29245f9c9f452a39586d9d68bc12",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/wireless/mediatek/mt76/mt76x0/phy.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.2"
            },
            {
              "lessThan": "6.2",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.2.*",
              "status": "unaffected",
              "version": "6.2.3",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.3",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.2.3",
                  "versionStartIncluding": "6.2",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.3",
                  "versionStartIncluding": "6.2",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mt76: mt76x0: fix oob access in mt76x0_phy_get_target_power\n\nAfter \u0027commit ba45841ca5eb (\"wifi: mt76: mt76x02: simplify struct\nmt76x02_rate_power\")\u0027, mt76x02 relies on ht[0-7] rate_power data for\nvht mcs{0,7}, while it uses vth[0-1] rate_power for vht mcs {8,9}.\nFix a possible out-of-bound access in mt76x0_phy_get_target_power routine."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 7.1,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H",
            "version": "3.1"
          },
          "scenarios": [
            {
              "lang": "en",
              "value": "AV:A - The bug is in mt76x0 TSSI TX-power calibration after the device itself transmits VHT frames; the highest-impact case is an mt76x0 SoftAP/hotspot where an adjacent WiFi peer\u2019s traffic drives VHT TX and the periodic cal_work path, matching Adjacent WiFi reachability used for similar mt76 SoftAP bugs.\nAC:L - On TSSI-enabled mt76x0 hardware, calibration runs on a fixed delayed-work interval and VHT MCS 2\u20139 indexing of the shrunk vht[2] array is deterministic once the radio is serving ordinary 802.11ac traffic; no attacker-uncontrollable race or rare debug config is required.\nPR:N - An adjacent client needs no host OS account or capability: open SoftAP/hotspot association plus data traffic is enough to cause the AP to TX VHT and exercise mt76x0_phy_get_target_power without authentication on the victim host.\nUI:N - Once SoftAP/hotspot is already running, the attacker triggers the path solely by associating and exchanging frames; no separate victim mount, open, or interactive step is required.\nS:U - The out-of-bounds access and resulting TX ALC mis-programming stay inside the host kernel WiFi driver authority and do not cross a VM, IOMMU, or sandbox boundary.\nC:L - This is a strictly bounded single-byte OOB read (vht[tx_rate] with tx_rate\u22649 into a 2-element array, at most ~7 bytes past rate_power into the adjacent cal fields). Per guidance that is not C:H, but the stale byte is folded into HW-visible TX power, so confidentiality is Low rather than None.\nI:N - The defect is a pure out-of-bounds read; the derived value only updates in-bounds cal.tssi_target and a clamped TX ALC register write, with no OOB write, UAF, or control-flow hijack primitive.\nA:H - The wrong VHT rate-power byte can swing TX ALC compensation across its full clamped range on a live SoftAP, which can severely disrupt or deny wireless availability for associated clients, and under the required upward rule this is scored High."
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-05T08:59:00.865Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/bf425c5d7ef6fb4083c1e0d46440f886127b5ee5"
        },
        {
          "url": "https://git.kernel.org/stable/c/6e1abc51c945663bddebfa1beb9590ff5b250eb7"
        }
      ],
      "title": "wifi: mt76: mt76x0: fix oob access in mt76x0_phy_get_target_power",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2022-50508",
    "datePublished": "2025-10-04T15:43:56.372Z",
    "dateReserved": "2025-10-04T15:39:19.465Z",
    "dateUpdated": "2026-08-05T08:59:00.865Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

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Confirmed: The vulnerability has been validated from an analyst's perspective.
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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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GHSA-GJGV-497V-VQ7G

CVE-2022-50508 (GCVE-0-2022-50508)

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