CVE-2026-99146 (GCVE-0-2026-99146)

Vulnerability from cvelistv5 – Published: 2026-10-28 10:35 – Updated: 2026-10-28 10:35
VLAI
Title
drm/i915/dmc: Add sanity check for DMC load address
Summary
In the Linux kernel, the following vulnerability has been resolved: drm/i915/dmc: Add sanity check for DMC load address For DMC firmware header version 3, the firmware load address is stored in dmc_info->start_mmioaddr and later used by dmc_load_program(). Unlike the MMIO address table, the firmware load address is not validated. Add a sanity check to ensure it is within the valid range. BSpec: 69671, 68378 (cherry picked from commit 5e47ee5c76ca9becde8df4ad5202845b7ffcbc4c)
Severity
No CVSS data available.
Assigner
Linux CNA under the mitre root
CNA scorecard D 53/100 over 6637 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 3d5928a168a9546b23c6b3439c6158d7a028326c , < ef82b4d5cb4a3fe77c7f99008d78b8c64709e258 (git)
Affected: 3d5928a168a9546b23c6b3439c6158d7a028326c , < 2fbd099b4e7c8c4ff70033c5bb950cdbb20838e2 (git)
Affected: 3d5928a168a9546b23c6b3439c6158d7a028326c , < 7dedc5bb11f95e96fe80757c924d8d9aa7327759 (git)
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Linux Linux Affected: 5.15
Unaffected: 0 , < 5.15 (semver)
Unaffected: 6.18.59 , ≤ 6.18.* (semver)
Unaffected: 7.2.13 , ≤ 7.2.* (semver)
Unaffected: 7.3 , ≤ * (original_commit_for_fix)
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{
  "containers": {
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        {
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          "product": "Linux",
          "programFiles": [
            "drivers/gpu/drm/i915/display/intel_dmc.c",
            "drivers/gpu/drm/i915/display/intel_dmc_regs.h"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
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          "vendor": "Linux",
          "versions": [
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              "versionType": "semver"
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      "cpeApplicability": [
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                  "vulnerable": true
                },
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                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/i915/dmc: Add sanity check for DMC load address\n\nFor DMC firmware header version 3, the firmware load address is stored\nin dmc_info-\u003estart_mmioaddr and later used by dmc_load_program().\n\nUnlike the MMIO address table, the firmware load address is not\nvalidated. Add a sanity check to ensure it is within the valid range.\n\nBSpec: 69671, 68378\n(cherry picked from commit 5e47ee5c76ca9becde8df4ad5202845b7ffcbc4c)"
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-28T10:35:02.847Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
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        },
        {
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  "cveMetadata": {
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    "assignerShortName": "Linux",
    "cveId": "CVE-2026-99146",
    "datePublished": "2026-10-28T10:35:02.847Z",
    "dateReserved": "2026-09-25T10:25:14.396Z",
    "dateUpdated": "2026-10-28T10:35:02.847Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
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      "date": "2026-11-04",
      "epss": "0.00167",
      "percentile": "0.05973"
    },
    "microsoft_vex": {
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      "cve": "CVE-2026-99146",
      "id": "msrc_CVE-2026-99146",
      "initial_release_date": "2026-10-29T01:05:41.000Z",
      "product_status:known_affected": "2",
      "source": "Microsoft CSAF VEX",
      "status": "final",
      "title": "drm/i915/dmc: Add sanity check for DMC load address",
      "url": "https://msrc.microsoft.com/csaf/vex/2026/msrc_cve-2026-99146.json",
      "version": "2"
    },
    "nvd": {
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                "defaultStatus": "unaffected",
                "product": "Linux",
                "programFiles": [
                  "drivers/gpu/drm/i915/display/intel_dmc.c",
                  "drivers/gpu/drm/i915/display/intel_dmc_regs.h"
                ],
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                "vendor": "Linux",
                "versions": [
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                ],
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                "vendor": "Linux",
                "versions": [
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                    "version": "7.2.13",
                    "versionType": "semver"
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                  }
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          }
        ],
        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/i915/dmc: Add sanity check for DMC load address\n\nFor DMC firmware header version 3, the firmware load address is stored\nin dmc_info-\u003estart_mmioaddr and later used by dmc_load_program().\n\nUnlike the MMIO address table, the firmware load address is not\nvalidated. Add a sanity check to ensure it is within the valid range.\n\nBSpec: 69671, 68378\n(cherry picked from commit 5e47ee5c76ca9becde8df4ad5202845b7ffcbc4c)"
          }
        ],
        "id": "CVE-2026-99146",
        "lastModified": "2026-10-28T11:17:34.660",
        "metrics": {},
        "published": "2026-10-28T11:17:34.660",
        "references": [
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/2fbd099b4e7c8c4ff70033c5bb950cdbb20838e2"
          },
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            "url": "https://git.kernel.org/stable/c/7dedc5bb11f95e96fe80757c924d8d9aa7327759"
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          }
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        "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "vulnStatus": "Received"
      }
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    "redhat_vex": {
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      "cve": "CVE-2026-99146",
      "id": "CVE-2026-99146",
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      "product_status:known_affected": "251",
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      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: kernel: Denial of Service via unvalidated DMC firmware load address in i915 driver",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-99146.json",
      "version": "3"
    }
  }
}



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