github - ghsa-78hp-5r4f-844r

GHSA-78HP-5R4F-844R

Vulnerability from github – Published: 2025-12-30 15:30 – Updated: 2025-12-30 15:30

Details

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

wifi: mt76: mt7921: fix use after free in mt7921_acpi_read()

Don't dereference "sar_root" after it has been freed.

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{
  "affected": [],
  "aliases": [
    "CVE-2022-50852"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-12-30T13:15:59Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mt76: mt7921: fix use after free in mt7921_acpi_read()\n\nDon\u0027t dereference \"sar_root\" after it has been freed.",
  "id": "GHSA-78hp-5r4f-844r",
  "modified": "2025-12-30T15:30:28Z",
  "published": "2025-12-30T15:30:28Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-50852"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/3ed0b382cb36f6dac9f93b3a5533cfcd699409a5"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e7de4b4979bd8d313ec837931dde936653ca82ea"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

CVE-2022-50852 (GCVE-0-2022-50852)

Vulnerability from cvelistv5 – Published: 2025-12-30 12:15 – Updated: 2025-12-30 12:15

Title

wifi: mt76: mt7921: fix use after free in mt7921_acpi_read()

Summary

In the Linux kernel, the following vulnerability has been resolved: wifi: mt76: mt7921: fix use after free in mt7921_acpi_read() Don't dereference "sar_root" after it has been freed.

Severity ?

No CVSS data available.

Assigner

Linux

References

URL

Tags

	https://git.kernel.org/stable/c/3ed0b382cb36f6dac…
	https://git.kernel.org/stable/c/e7de4b4979bd8d313…

Impacted products

Vendor

Product

Version

Linux

Affected: f965333e491e36adb0fa91e389fba8685b704fb6 , < 3ed0b382cb36f6dac9f93b3a5533cfcd699409a5 (git)
Affected: f965333e491e36adb0fa91e389fba8685b704fb6 , < e7de4b4979bd8d313ec837931dde936653ca82ea (git)

Linux

Affected: 6.0
Unaffected: 0 , < 6.0 (semver)
Unaffected: 6.0.3 , ≤ 6.0.* (semver)
Unaffected: 6.1 , ≤ * (original_commit_for_fix)

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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/wireless/mediatek/mt76/mt7921/acpi_sar.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "3ed0b382cb36f6dac9f93b3a5533cfcd699409a5",
              "status": "affected",
              "version": "f965333e491e36adb0fa91e389fba8685b704fb6",
              "versionType": "git"
            },
            {
              "lessThan": "e7de4b4979bd8d313ec837931dde936653ca82ea",
              "status": "affected",
              "version": "f965333e491e36adb0fa91e389fba8685b704fb6",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/wireless/mediatek/mt76/mt7921/acpi_sar.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.0"
            },
            {
              "lessThan": "6.0",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.0.*",
              "status": "unaffected",
              "version": "6.0.3",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.1",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.0.3",
                  "versionStartIncluding": "6.0",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1",
                  "versionStartIncluding": "6.0",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mt76: mt7921: fix use after free in mt7921_acpi_read()\n\nDon\u0027t dereference \"sar_root\" after it has been freed."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-12-30T12:15:28.444Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/3ed0b382cb36f6dac9f93b3a5533cfcd699409a5"
        },
        {
          "url": "https://git.kernel.org/stable/c/e7de4b4979bd8d313ec837931dde936653ca82ea"
        }
      ],
      "title": "wifi: mt76: mt7921: fix use after free in mt7921_acpi_read()",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2022-50852",
    "datePublished": "2025-12-30T12:15:28.444Z",
    "dateReserved": "2025-12-30T12:06:07.134Z",
    "dateUpdated": "2025-12-30T12:15:28.444Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date

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.

Detection rules are retrieved from Rulezet.

Action not permitted

GHSA-78HP-5R4F-844R

CVE-2022-50852 (GCVE-0-2022-50852)

Tags

Sightings

Nomenclature