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arm-trusted-firmware — security advisory

Type: advisorySources: OSVAdvisory ID: ALPINE-CVE-2023-49100

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.

Products
arm-trusted-firmware
Affected versions
Not specified
Fixed versions
2.8.14-r0
CVEs
CVE-2023-49100
Confirmed fixed CVEs
Not specified
Updated in this feed
1 Nov 2026, 15:02 UTC · Revision 1

Source evidence

ALPINE-CVE-2023-49100

core-osv · Original source

Published 21 Feb 2024, 16:15 UTC

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.

osv:ALPINE-CVE-2023-49100

arm-trusted-firmware

Fixed versions: 2.8.14-r0

arm-trusted-firmware

Fixed versions: 2.8.14-r0

arm-trusted-firmware

Fixed versions: 2.8.14-r0

Complete source record
{
  "id": "0cc9e063de64c8309d4be40523cd3b88da4ea0339ea366369906179ca0b76273",
  "url": "https://osv.dev/vulnerability/ALPINE-CVE-2023-49100",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "ALPINE-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:ALPINE-CVE-2023-49100",
    "products": [
      {
        "name": {
          "value": "arm-trusted-firmware",
          "evidence": "/affected/0/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "2.8.14-r0",
            "evidence": "/affected/0/ranges"
          }
        ],
        "affected_versions": []
      },
      {
        "name": {
          "value": "arm-trusted-firmware",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "2.8.14-r0",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      },
      {
        "name": {
          "value": "arm-trusted-firmware",
          "evidence": "/affected/2/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "2.8.14-r0",
            "evidence": "/affected/2/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "medium",
    "structured": {
      "id": "ALPINE-CVE-2023-49100",
      "aliases": [
        "ALPINE-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": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "2.8.14-r0"
                }
              ]
            }
          ],
          "package": {
            "name": "arm-trusted-firmware",
            "purl": "pkg:apk/alpine/arm-trusted-firmware?arch=source",
            "ecosystem": "Alpine:v3.18"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2023-49100.json"
          },
          "ecosystem_specific": {}
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "2.8.14-r0"
                }
              ]
            }
          ],
          "package": {
            "name": "arm-trusted-firmware",
            "purl": "pkg:apk/alpine/arm-trusted-firmware?arch=source",
            "ecosystem": "Alpine:v3.19"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2023-49100.json"
          },
          "ecosystem_specific": {}
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "2.8.14-r0"
                }
              ]
            }
          ],
          "package": {
            "name": "arm-trusted-firmware",
            "purl": "pkg:apk/alpine/arm-trusted-firmware?arch=source",
            "ecosystem": "Alpine:v3.20"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2023-49100.json"
          },
          "ecosystem_specific": {}
        }
      ],
      "modified": "2026-10-26T17:17:58.654573799Z",
      "provider": "osv",
      "upstream": [
        "CVE-2023-49100"
      ],
      "references": [
        "https://security.alpinelinux.org/vuln/CVE-2023-49100"
      ]
    },
    "related_cves": [
      {
        "value": "CVE-2023-49100",
        "evidence": "/upstream"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 454550,
  "published_at": "2024-02-21T16:15:49.457+00:00"
}