CVE-2022-50433

{
  "id": "CVE-2022-50433",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "published": "2025-10-01T12:15:35.127",
  "lastModified": "2026-11-05T21:16:58.617",
  "vulnStatus": "Analyzed",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nefi: ssdt: Don't free memory if ACPI table was loaded successfully\n\nAmadeusz reports KASAN use-after-free errors introduced by commit\n3881ee0b1edc (\"efi: avoid efivars layer when loading SSDTs from\nvariables\"). The problem appears to be that the memory that holds the\nnew ACPI table is now freed unconditionally, instead of only when the\nACPI core reported a failure to load the table.\n\nSo let's fix this, by omitting the kfree() on success."
    }
  ],
  "affected": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "affectedData": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "programFiles": [
            "drivers/firmware/efi/efi.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "versions": [
            {
              "version": "3881ee0b1edce0ece72d24b7c74f46b73bd6dcba",
              "lessThan": "11497fd69cd2282538ec6eb4cda1d16fc061233d",
              "versionType": "git",
              "status": "affected"
            },
            {
              "version": "3881ee0b1edce0ece72d24b7c74f46b73bd6dcba",
              "lessThan": "4b017e59f01097f19b938f6dc4dc2c4720701610",
              "versionType": "git",
              "status": "affected"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "programFiles": [
            "drivers/firmware/efi/efi.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "versions": [
            {
              "version": "6.0",
              "status": "affected"
            },
            {
              "version": "0",
              "lessThan": "6.0",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "6.0.4",
              "lessThanOrEqual": "6.0.*",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "6.1",
              "lessThanOrEqual": "*",
              "versionType": "original_commit_for_fix",
              "status": "unaffected"
            }
          ]
        }
      ]
    }
  ],
  "metrics": {
    "cvssMetricV31": [
      {
        "source": "[email protected]",
        "type": "Primary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
          "baseScore": 7.8,
          "baseSeverity": "HIGH",
          "attackVector": "LOCAL",
          "attackComplexity": "LOW",
          "privilegesRequired": "LOW",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "availabilityImpact": "HIGH"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 5.9
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "timestamp": "2026-11-05T20:10:51.473825Z",
          "id": "CVE-2022-50433",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "version": "2.0.3"
        }
      }
    ]
  },
  "weaknesses": [
    {
      "source": "[email protected]",
      "type": "Primary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-416"
        }
      ]
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "operator": "OR",
          "negate": false,
          "cpeMatch": [
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "versionStartIncluding": "6.0",
              "versionEndExcluding": "6.0.4",
              "matchCriteriaId": "DBBC1B11-9296-4778-95E2-B7A8C9EB8D24"
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  "references": [
    {
      "url": "https://git.kernel.org/stable/c/11497fd69cd2282538ec6eb4cda1d16fc061233d",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
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      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
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    }
  ]
}