CVE-2026-45203 (GCVE-0-2026-45203)

Vulnerability from cvelistv5 – Published: 2026-07-10 20:57 – Updated: 2026-07-10 20:57
VLAI
Title
GPU DDK - rgxfw_hwperf_ufo() re-reads psCmdHeader->ui32CmdSize after initial check, TOCTOU
Summary
Kernel software installed and running inside a Host VM may post improper commands to the GPU Firmware to trigger a memory write outside the permitted range of memory for the host kernel. A TOCTOU bug existed where a malicious driver could modify values in memory after firmware validation but before use.
Severity
No CVSS data available.
CWE
  • CWE-367 - CWE - CWE-367: Time-of-check Time-of-use (TOCTOU) Race Condition (4.20)
Assigner
Impacted products
Vendor Product Version
Imagination Technologies Graphics DDK Affected: 1.18 RTM2 (custom)
Affected: 23.2 RTM2 (custom)
Affected: 24.2 RTM2 (custom)
Affected: 25.1 RTM2 , ≤ 25.3 RTM (custom)
Affected: 26.1 RTM1 (custom)
Unaffected: 26.1 RTM2 (custom)
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Show details on NVD website

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            "Android"
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          "vendor": "Imagination Technologies",
          "versions": [
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              "version": "1.18 RTM2",
              "versionType": "custom"
            },
            {
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              "version": "23.2 RTM2",
              "versionType": "custom"
            },
            {
              "status": "affected",
              "version": "24.2 RTM2",
              "versionType": "custom"
            },
            {
              "lessThanOrEqual": "25.3 RTM",
              "status": "affected",
              "version": "25.1 RTM2",
              "versionType": "custom"
            },
            {
              "status": "affected",
              "version": "26.1 RTM1",
              "versionType": "custom"
            },
            {
              "status": "unaffected",
              "version": "26.1 RTM2",
              "versionType": "custom"
            }
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        }
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            }
          ],
          "value": "Kernel software installed and running inside a Host VM may post improper commands to the GPU Firmware to trigger a memory write outside the permitted range of memory for the host kernel.\n\n\n\nA TOCTOU bug existed where a malicious driver could modify values in memory after firmware validation but before use."
        }
      ],
      "impacts": [
        {
          "capecId": "CAPEC-480",
          "descriptions": [
            {
              "lang": "en",
              "value": "CAPEC - CAPEC-480: Escaping Virtualization (Version 3.9)"
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      "problemTypes": [
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          "descriptions": [
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      "providerMetadata": {
        "dateUpdated": "2026-07-10T20:57:19.733Z",
        "orgId": "367425dc-4d06-4041-9650-c2dc6aaa27ce",
        "shortName": "imaginationtech"
      },
      "references": [
        {
          "url": "https://www.imaginationtech.com/gpu-driver-vulnerabilities/"
        }
      ],
      "source": {
        "discovery": "UNKNOWN"
      },
      "title": "GPU DDK - rgxfw_hwperf_ufo() re-reads psCmdHeader-\u003eui32CmdSize after initial check, TOCTOU",
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    "assignerShortName": "imaginationtech",
    "cveId": "CVE-2026-45203",
    "datePublished": "2026-07-10T20:57:19.733Z",
    "dateReserved": "2026-05-11T10:58:04.163Z",
    "dateUpdated": "2026-07-10T20:57:19.733Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2026-45203\",\"sourceIdentifier\":\"367425dc-4d06-4041-9650-c2dc6aaa27ce\",\"published\":\"2026-07-10T21:16:54.760\",\"lastModified\":\"2026-07-10T21:16:54.760\",\"vulnStatus\":\"Received\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"Kernel software installed and running inside a Host VM may post improper commands to the GPU Firmware to trigger a memory write outside the permitted range of memory for the host kernel.\\n\\n\\n\\nA TOCTOU bug existed where a malicious driver could modify values in memory after firmware validation but before use.\"}],\"affected\":[{\"source\":\"367425dc-4d06-4041-9650-c2dc6aaa27ce\",\"affectedData\":[{\"vendor\":\"Imagination Technologies\",\"product\":\"Graphics DDK\",\"defaultStatus\":\"unknown\",\"platforms\":[\"Linux\",\"Android\"],\"versions\":[{\"version\":\"1.18 RTM2\",\"versionType\":\"custom\",\"status\":\"affected\"},{\"version\":\"23.2 RTM2\",\"versionType\":\"custom\",\"status\":\"affected\"},{\"version\":\"24.2 RTM2\",\"versionType\":\"custom\",\"status\":\"affected\"},{\"version\":\"25.1 RTM2\",\"lessThanOrEqual\":\"25.3 RTM\",\"versionType\":\"custom\",\"status\":\"affected\"},{\"version\":\"26.1 RTM1\",\"versionType\":\"custom\",\"status\":\"affected\"},{\"version\":\"26.1 RTM2\",\"versionType\":\"custom\",\"status\":\"unaffected\"}]}]}],\"metrics\":{},\"weaknesses\":[{\"source\":\"367425dc-4d06-4041-9650-c2dc6aaa27ce\",\"type\":\"Secondary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-367\"}]}],\"references\":[{\"url\":\"https://www.imaginationtech.com/gpu-driver-vulnerabilities/\",\"source\":\"367425dc-4d06-4041-9650-c2dc6aaa27ce\"}]}}"
  }
}



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