{
  "document": {
    "aggregate_severity": {
      "text": "Medium"
    },
    "category": "csaf_vex",
    "csaf_version": "2.0",
    "distribution": {
      "text": "TuxCare License Agreement",
      "tlp": {
        "label": "WHITE",
        "url": "https://www.first.org/tlp/"
      }
    },
    "lang": "en",
    "notes": [
      {
        "category": "legal_disclaimer",
        "text": "This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Cloud Linux Inc. and provide a link to the original.",
        "title": "Terms of Use"
      }
    ],
    "publisher": {
      "category": "vendor",
      "contact_details": "https://tuxcare.com/contact/",
      "name": "TuxCare",
      "namespace": "https://tuxcare.com/"
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        "category": "self",
        "summary": "Canonical URL",
        "url": "https://security.tuxcare.com/csaf/v2/els_os/almalinux9.2esu/vex/2023/cve-2023-22745-els_os-almalinux9_2esu.json"
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      "generator": {
        "date": "2026-02-16T09:42:46Z",
        "engine": {
          "name": "pyCSAF"
        }
      },
      "id": "CVE-2023-22745-ELS_OS-ALMALINUX9.2ESU",
      "initial_release_date": "2023-01-19T23:15:00Z",
      "revision_history": [
        {
          "date": "2023-01-19T23:15:00Z",
          "number": "1",
          "summary": "Initial version"
        },
        {
          "date": "2025-10-09T14:44:54Z",
          "number": "2",
          "summary": "Official Publication"
        },
        {
          "date": "2025-12-23T19:08:30Z",
          "number": "3",
          "summary": "Update document"
        },
        {
          "date": "2026-02-16T09:42:46Z",
          "number": "4",
          "summary": "Update document"
        }
      ],
      "status": "final",
      "version": "4"
    },
    "title": "Security update on CVE-2023-22745"
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  "vulnerabilities": [
    {
      "cve": "CVE-2023-22745",
      "cwe": {
        "id": "CWE-120",
        "name": "Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')"
      },
      "notes": [
        {
          "category": "description",
          "text": "tpm2-tss is an open source software implementation of the Trusted Computing Group (TCG) Trusted Platform Module (TPM) 2 Software Stack (TSS2). In versions prior to 4.1.0-rc0, 4.0.1, and 3.2.2-rc1, `Tss2_RC_SetHandler` and `Tss2_RC_Decode` both index into `layer_handler` with an 8 bit layer number, but the array only has `TPM2_ERROR_TSS2_RC_LAYER_COUNT` entries, so trying to add a handler for higher-numbered layers or decode a response code with such a layer number reads/writes past the end of the buffer. This Buffer overrun, could result in arbitrary code execution. An example attack would be a MiTM bus attack that returns 0xFFFFFFFF for the RC. Given the common use case of TPM modules an attacker must have local access to the target machine with local system privileges which allows access to the TPM system. Usually TPM access requires administrative privilege. Versions 4.1.0-rc0, 4.0.1, and 3.2.2-rc1 fix the issue.",
          "title": "Vulnerability description"
        },
        {
          "category": "general",
          "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.",
          "title": "CVSS score applicability"
        }
      ],
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          "AlmaLinux-9.2:tpm2-tss-devel-0:3.0.3-8.el9.tuxcare.els1.i686",
          "AlmaLinux-9.2:tpm2-tss-devel-0:3.0.3-8.el9.tuxcare.els1.x86_64"
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          "AlmaLinux-9.2:tpm2-tss-0:3.0.3-8.el9.x86_64",
          "AlmaLinux-9.2:tpm2-tss-devel-0:3.0.3-8.el9.i686",
          "AlmaLinux-9.2:tpm2-tss-devel-0:3.0.3-8.el9.x86_64"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://cve.tuxcare.com/els/cve/CVE-2023-22745"
        },
        {
          "category": "external",
          "summary": "https://github.com/tpm2-software/tpm2-tss/commit/306490c8d848c367faa2d9df81f5e69dab46ffb5",
          "url": "https://github.com/tpm2-software/tpm2-tss/commit/306490c8d848c367faa2d9df81f5e69dab46ffb5"
        },
        {
          "category": "external",
          "summary": "https://github.com/tpm2-software/tpm2-tss/security/advisories/GHSA-4j3v-fh23-vx67",
          "url": "https://github.com/tpm2-software/tpm2-tss/security/advisories/GHSA-4j3v-fh23-vx67"
        },
        {
          "category": "external",
          "summary": "https://github.com/tpm2-software/tpm2-tss/commit/49107d65d5c7be430671398416bbd89dae4e34e7",
          "url": "https://github.com/tpm2-software/tpm2-tss/commit/49107d65d5c7be430671398416bbd89dae4e34e7"
        },
        {
          "category": "external",
          "summary": "https://github.com/tpm2-software/tpm2-tss/commit/7ab42953216adec046d000a5e3085f3ee5e9cabf",
          "url": "https://github.com/tpm2-software/tpm2-tss/commit/7ab42953216adec046d000a5e3085f3ee5e9cabf"
        }
      ],
      "release_date": "2023-01-19T23:15:00Z",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2025-10-09T14:44:23.805719Z",
          "details": "Details on how to apply the fix are available at: https://cve.tuxcare.com/els/releases/CLSA-2025:1760021057",
          "product_ids": [
            "AlmaLinux-9.2:tpm2-tss-0:3.0.3-8.el9.tuxcare.els1.i686",
            "AlmaLinux-9.2:tpm2-tss-0:3.0.3-8.el9.tuxcare.els1.x86_64",
            "AlmaLinux-9.2:tpm2-tss-devel-0:3.0.3-8.el9.tuxcare.els1.i686",
            "AlmaLinux-9.2:tpm2-tss-devel-0:3.0.3-8.el9.tuxcare.els1.x86_64"
          ],
          "url": "https://cve.tuxcare.com/els/releases/CLSA-2025:1760021057"
        },
        {
          "category": "none_available",
          "details": "Affected",
          "product_ids": [
            "AlmaLinux-9.2:tpm2-tss-0:3.0.3-8.el9.i686",
            "AlmaLinux-9.2:tpm2-tss-0:3.0.3-8.el9.x86_64",
            "AlmaLinux-9.2:tpm2-tss-devel-0:3.0.3-8.el9.i686",
            "AlmaLinux-9.2:tpm2-tss-devel-0:3.0.3-8.el9.x86_64"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "HIGH",
            "attackVector": "LOCAL",
            "availabilityImpact": "HIGH",
            "baseScore": 6.4,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "HIGH",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "products": [
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            "AlmaLinux-9.2:tpm2-tss-0:3.0.3-8.el9.x86_64",
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        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Moderate"
        }
      ]
    }
  ]
}