cve-2021-47187
Vulnerability from cvelistv5
Published
2024-04-10 18:56
Modified
2024-12-02 08:32
Severity ?
Summary
arm64: dts: qcom: msm8998: Fix CPU/L2 idle state latency and residency
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/118c826ef8b43efe0fda8faf419673707ee8c5e5
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/3f1dcaff642e75c1d2ad03f783fa8a3b1f56dd50
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/a14d7038ea201c5526375becfc43b9ba281b1e82
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/e52fecdd0c142b95c720683885b06ee3f0e065c8
Impacted products
Vendor Product Version
Linux Linux Version: 5.3
Show details on NVD website

To clipboard 

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-04T05:32:07.117Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/a14d7038ea201c5526375becfc43b9ba281b1e82"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/e52fecdd0c142b95c720683885b06ee3f0e065c8"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/118c826ef8b43efe0fda8faf419673707ee8c5e5"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/3f1dcaff642e75c1d2ad03f783fa8a3b1f56dd50"
          }
        ],
        "title": "CVE Program Container"
      },
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2021-47187",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2024-09-10T15:50:14.416213Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2024-09-11T17:33:40.154Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "arch/arm64/boot/dts/qcom/msm8998.dtsi"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "a14d7038ea20",
              "status": "affected",
              "version": "c3083c80b52c",
              "versionType": "git"
            },
            {
              "lessThan": "e52fecdd0c14",
              "status": "affected",
              "version": "c3083c80b52c",
              "versionType": "git"
            },
            {
              "lessThan": "118c826ef8b4",
              "status": "affected",
              "version": "c3083c80b52c",
              "versionType": "git"
            },
            {
              "lessThan": "3f1dcaff642e",
              "status": "affected",
              "version": "c3083c80b52c",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "arch/arm64/boot/dts/qcom/msm8998.dtsi"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.3"
            },
            {
              "lessThan": "5.3",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.4.*",
              "status": "unaffected",
              "version": "5.4.162",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.82",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.5",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "5.16",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\narm64: dts: qcom: msm8998: Fix CPU/L2 idle state latency and residency\n\nThe entry/exit latency and minimum residency in state for the idle\nstates of MSM8998 were ..bad: first of all, for all of them the\ntimings were written for CPU sleep but the min-residency-us param\nwas miscalculated (supposedly, while porting this from downstream);\nThen, the power collapse states are setting PC on both the CPU\ncluster *and* the L2 cache, which have different timings: in the\nspecific case of L2 the times are higher so these ones should be\ntaken into account instead of the CPU ones.\n\nThis parameter misconfiguration was not giving particular issues\nbecause on MSM8998 there was no CPU scaling at all, so cluster/L2\npower collapse was rarely (if ever) hit.\nWhen CPU scaling is enabled, though, the wrong timings will produce\nSoC unstability shown to the user as random, apparently error-less,\nsudden reboots and/or lockups.\n\nThis set of parameters are stabilizing the SoC when CPU scaling is\nON and when power collapse is frequently hit."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2024-12-02T08:32:32.941Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/a14d7038ea201c5526375becfc43b9ba281b1e82"
        },
        {
          "url": "https://git.kernel.org/stable/c/e52fecdd0c142b95c720683885b06ee3f0e065c8"
        },
        {
          "url": "https://git.kernel.org/stable/c/118c826ef8b43efe0fda8faf419673707ee8c5e5"
        },
        {
          "url": "https://git.kernel.org/stable/c/3f1dcaff642e75c1d2ad03f783fa8a3b1f56dd50"
        }
      ],
      "title": "arm64: dts: qcom: msm8998: Fix CPU/L2 idle state latency and residency",
      "x_generator": {
        "engine": "bippy-8e903de6a542"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2021-47187",
    "datePublished": "2024-04-10T18:56:26.926Z",
    "dateReserved": "2024-03-25T09:12:14.113Z",
    "dateUpdated": "2024-12-02T08:32:32.941Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2021-47187\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2024-04-10T19:15:47.480\",\"lastModified\":\"2024-04-10T19:49:51.183\",\"vulnStatus\":\"Awaiting Analysis\",\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\narm64: dts: qcom: msm8998: Fix CPU/L2 idle state latency and residency\\n\\nThe entry/exit latency and minimum residency in state for the idle\\nstates of MSM8998 were ..bad: first of all, for all of them the\\ntimings were written for CPU sleep but the min-residency-us param\\nwas miscalculated (supposedly, while porting this from downstream);\\nThen, the power collapse states are setting PC on both the CPU\\ncluster *and* the L2 cache, which have different timings: in the\\nspecific case of L2 the times are higher so these ones should be\\ntaken into account instead of the CPU ones.\\n\\nThis parameter misconfiguration was not giving particular issues\\nbecause on MSM8998 there was no CPU scaling at all, so cluster/L2\\npower collapse was rarely (if ever) hit.\\nWhen CPU scaling is enabled, though, the wrong timings will produce\\nSoC unstability shown to the user as random, apparently error-less,\\nsudden reboots and/or lockups.\\n\\nThis set of parameters are stabilizing the SoC when CPU scaling is\\nON and when power collapse is frequently hit.\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/118c826ef8b43efe0fda8faf419673707ee8c5e5\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/3f1dcaff642e75c1d2ad03f783fa8a3b1f56dd50\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/a14d7038ea201c5526375becfc43b9ba281b1e82\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/e52fecdd0c142b95c720683885b06ee3f0e065c8\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
  }
}


Log in or create an account to share your comment.




Tags
Taxonomy of the tags.




Sightings

Author Source Type Date

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
  • Confirmed: The vulnerability is confirmed from an analyst perspective.
  • Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
  • Patched: This vulnerability was successfully patched by the user reporting the sighting.
  • Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
  • Not confirmed: The user expresses doubt about the veracity of the vulnerability.
  • Not patched: This vulnerability was not successfully patched by the user reporting the sighting.