Security advisory

{
  "id": "20dd3b8da17d96631d314c8b8329699d511b7b90ad40e9bc3a9d57d1ce169e4f",
  "url": "https://osv.dev/vulnerability/CVE-2023-49100",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2023-49100",
    "summary": "Trusted Firmware-A (TF-A) before 2.10 has a potential read out-of-bounds in the SDEI service. The input parameter passed in register x1 is not validated well enough in the function sdei_interrupt_bind. The parameter is passed to a call to plat_ic_get_interrupt_type. It can be any arbitrary value passing checks in the function plat_ic_is_sgi. A compromised Normal World (Linux kernel) can enable a root-privileged attacker to issue arbitrary SMC calls. Using this primitive, he can control the content of registers x0 through x6, which are used to send parameters to TF-A. Out-of-bounds addresses can be read in the context of TF-A (EL3). Because the read value is never returned to non-secure memory or in registers, no leak is possible. An attacker can still crash TF-A, however.",
    "evidence": "osv:CVE-2023-49100",
    "products": [],
    "severity": "medium",
    "structured": {
      "id": "CVE-2023-49100",
      "aliases": [
        "CVE-2023-49100"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/arm-software/arm-trusted-firmware",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "b6c0948400594e3cc4dbb5a4ef04b815d2675808"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "2.10"
                      }
                    ],
                    "source": "DESCRIPTION"
                  }
                ]
              }
            }
          ],
          "versions": [
            "v2.10-rc0",
            "v2.10-rc1",
            "v2.9.0",
            "v2.9-rc1",
            "v2.9",
            "v2.9-rc0",
            "v2.8-rc0",
            "v2.8.0",
            "v2.8",
            "v2.7-rc0",
            "v2.7.0",
            "v2.7-rc1",
            "v2.7",
            "v2.6-rc1",
            "v2.6",
            "v2.6-rc0",
            "v2.5",
            "v2.5-rc1",
            "v2.5-rc0",
            "v2.4-rc2",
            "v2.4-rc1",
            "v2.4",
            "v2.4-rc0",
            "v2.3",
            "v2.3-rc2",
            "v2.3-rc1",
            "v2.3-rc0",
            "v2.2",
            "v2.2-rc2",
            "v2.2-rc1",
            "v2.2-rc0",
            "v2.1",
            "v2.1-rc1",
            "v2.1-rc0",
            "v2.0",
            "v2.0-rc0",
            "v1.6",
            "v1.6-rc1",
            "v1.6-rc0",
            "v1.5-rc2",
            "v1.5",
            "v1.5-rc3",
            "v1.5-rc1",
            "v1.5-rc0",
            "v1.4",
            "v1.4-rc0",
            "v1.3_rc2",
            "v1.3",
            "v1.3_rc1",
            "v1.3-rc0",
            "v1.2",
            "v1.2-rc0",
            "v1.1-rc3",
            "v1.1",
            "v1.1-rc2",
            "v1.1-rc1",
            "v1.1-rc0",
            "v1.0",
            "v1.0-rc0",
            "v0.4",
            "v0.4-rc2",
            "v0.4-rc1",
            "v0.3",
            "v0.2"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2023-49100.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:27.467564573Z",
      "provider": "osv",
      "references": [
        "https://github.com/ARM-software/arm-trusted-firmware/blob/a05414bedc9b1cc35cf0795ce641b6b4db5bc97e/services/std_svc/sdei/sdei_main.c#L708",
        "https://github.com/ARM-software/arm-trusted-firmware/blob/a05414bedc9b1cc35cf0795ce641b6b4db5bc97e/services/std_svc/sdei/sdei_main.c#L714",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/49xxx/CVE-2023-49100.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2023-49100",
        "https://trustedfirmware-a.readthedocs.io/en/latest/security_advisories/security-advisory-tfv-11.html"
      ],
      "provider_metadata": {
        "cna_assigner": "mitre",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/49xxx/CVE-2023-49100.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2023-49100",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 493775,
  "published_at": "2024-02-21T00:00:00+00:00"
}