ima: Fix a potential integer overflow in ima_appraise_measurement

{
  "id": "5db60c282097799adba4293bfcaa21f02d2f91ad1d102dffd962dbf4c16b3012",
  "url": "https://osv.dev/vulnerability/CVE-2022-49643",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "ima: Fix a potential integer overflow in ima_appraise_measurement",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: ima: Fix a potential integer overflow in ima_appraise_measurement When the ima-modsig is enabled, the rc passed to evm_verifyxattr() may be negative, which may cause the integer overflow problem.",
    "evidence": "osv:CVE-2022-49643",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "5.4.207",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "5.10.132",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "5.15.56",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "5.18.13",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "high",
    "structured": {
      "id": "CVE-2022-49643",
      "aliases": [
        "CVE-2022-49643"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H"
        }
      ],
      "affected": [
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              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "type": "GIT",
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                  "fixed": "388f3df7c3c8b7f2a32b9ae0a9b2f9f6ad3b1b77"
                },
                {
                  "fixed": "831e190175f10652be93b08436cc7bf2e62e4bb6"
                },
                {
                  "fixed": "c8d5d81940938b5f6c0f495ca9538e7740416f30"
                },
                {
                  "fixed": "640cea4c2839a821adfbb703b590a5928abe9286"
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                {
                  "fixed": "d2ee2cfc4aa85ff6a2a3b198a3a524ec54e3d999"
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          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2022-49643.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "5.4.0"
                },
                {
                  "fixed": "5.4.207"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "5.5.0"
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                {
                  "fixed": "5.10.132"
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            {
              "type": "ECOSYSTEM",
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                  "introduced": "5.11.0"
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                {
                  "fixed": "5.15.56"
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              "type": "ECOSYSTEM",
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                  "introduced": "5.16.0"
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          ],
          "package": {
            "name": "Kernel",
            "ecosystem": "Linux"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2022-49643.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:51.366388073Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/388f3df7c3c8b7f2a32b9ae0a9b2f9f6ad3b1b77",
        "https://git.kernel.org/stable/c/640cea4c2839a821adfbb703b590a5928abe9286",
        "https://git.kernel.org/stable/c/831e190175f10652be93b08436cc7bf2e62e4bb6",
        "https://git.kernel.org/stable/c/c8d5d81940938b5f6c0f495ca9538e7740416f30",
        "https://git.kernel.org/stable/c/d2ee2cfc4aa85ff6a2a3b198a3a524ec54e3d999",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/49xxx/CVE-2022-49643.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2022-49643",
        "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
      ],
      "provider_metadata": {
        "cna_assigner": "Linux",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/49xxx/CVE-2022-49643.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2022-49643",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 519655,
  "published_at": "2025-02-26T02:23:49.658+00:00"
}