CVE-2026-53045 (GCVE-0-2026-53045)
Vulnerability from cvelistv5
Published
2026-06-24 16:29
Modified
2026-08-05 12:32
Severity ?
9.8 (Critical) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Summary
In the Linux kernel, the following vulnerability has been resolved: memory: tegra124-emc: Fix dll_change check The code checking whether the specified memory timing enables DLL in the EMRS register was reversed. DLL is enabled if bit A0 is low. Fix the check.
References
Impacted products
Vendor Product Version
Linux Linux Version: 73a7f0a90641b09300d47308682b674c570dd6a2
Version: 73a7f0a90641b09300d47308682b674c570dd6a2
Version: 73a7f0a90641b09300d47308682b674c570dd6a2
Version: 73a7f0a90641b09300d47308682b674c570dd6a2
Version: 73a7f0a90641b09300d47308682b674c570dd6a2
Version: 73a7f0a90641b09300d47308682b674c570dd6a2
Version: 73a7f0a90641b09300d47308682b674c570dd6a2
Version: 73a7f0a90641b09300d47308682b674c570dd6a2
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/memory/tegra/tegra124-emc.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
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        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
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          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "4.2"
            },
            {
              "lessThan": "4.2",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.258",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.209",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.175",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.141",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.91",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.33",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.0.*",
              "status": "unaffected",
              "version": "7.0.10",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.1",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.10.258",
                  "versionStartIncluding": "4.2",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.15.209",
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                  "vulnerable": true
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                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.175",
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                  "vulnerable": true
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                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.141",
                  "versionStartIncluding": "4.2",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.91",
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                  "vulnerable": true
                },
                {
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                {
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                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.1",
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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\nmemory: tegra124-emc: Fix dll_change check\n\nThe code checking whether the specified memory timing enables DLL\nin the EMRS register was reversed. DLL is enabled if bit A0 is low.\nFix the check."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 9.8,
            "baseSeverity": "CRITICAL",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "scenarios": [
            {
              "lang": "en",
              "value": "AV:N - On networked Tegra124 devices, unauthenticated remote traffic can induce memory/CPU load that drives ACTMON/devfreq EMC rate transitions into the vulnerable timing-change path.\nAC:L - Once running on an affected Tegra124 DDR3 configuration with timings that cross the DLL enable boundary, the attacker only needs to induce rate changes; there is no race or hard-to-control memory layout requirement.\nPR:N - The remote-load ACTMON/devfreq path has no authentication or privilege check before the vulnerable EMC clock transition is reached.\nUI:N - No victim action is required; rate changes are performed automatically by kernel power-management code in response to load.\nS:U - The impact remains within the same kernel-controlled system and does not cross a hypervisor, IOMMU, or separate security-authority boundary.\nC:H - The reversed DLL transition handling can misprogram DDR3 timing/state during EMC clock changes, creating system-wide DRAM corruption that may expose arbitrary kernel or process memory.\nI:H - Incorrect DRAM DLL sequencing can corrupt arbitrary memory contents, including kernel data or page tables, making high integrity impact defensible.\nA:H - Bad memory-controller timing during live DRAM operation can hang, panic, or otherwise crash the system."
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-05T12:32:52.914Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/a85967331144fde9300be38bb44d2558eb6b742e"
        },
        {
          "url": "https://git.kernel.org/stable/c/db0ae80865b515cc0b705c85877ec00f7eebe9fe"
        },
        {
          "url": "https://git.kernel.org/stable/c/2369b1831161356e1bcb51385d3e532dc4fe2771"
        },
        {
          "url": "https://git.kernel.org/stable/c/7e19e72f306484996c52ff96cc92f69b78ed5435"
        },
        {
          "url": "https://git.kernel.org/stable/c/05f138fc7e27ee8e7a83ccf966c3fa26cda44dda"
        },
        {
          "url": "https://git.kernel.org/stable/c/1793249c067a4b28e1aba0ad0e4d73aa9f9e165a"
        },
        {
          "url": "https://git.kernel.org/stable/c/1ebbbef47d11cc90219c081492ccf995aaa3e9b3"
        },
        {
          "url": "https://git.kernel.org/stable/c/9597ab9a8296ab337e6820f8a717ff621078b632"
        }
      ],
      "title": "memory: tegra124-emc: Fix dll_change check",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-53045",
    "datePublished": "2026-06-24T16:29:51.795Z",
    "dateReserved": "2026-06-09T07:44:35.381Z",
    "dateUpdated": "2026-08-05T12:32:52.914Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}


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