Vulnerability-Lookup

GHSA-CQG5-MCPX-Q78P

Vulnerability from github – Published: 2024-06-24 15:31 – Updated: 2024-06-26 15:31

Details

In the Linux kernel, the following vulnerability has been resolved:

riscv: prevent pt_regs corruption for secondary idle threads

Top of the kernel thread stack should be reserved for pt_regs. However this is not the case for the idle threads of the secondary boot harts. Their stacks overlap with their pt_regs, so both may get corrupted.

Similar issue has been fixed for the primary hart, see c7cdd96eca28 ("riscv: prevent stack corruption by reserving task_pt_regs(p) early"). However that fix was not propagated to the secondary harts. The problem has been noticed in some CPU hotplug tests with V enabled. The function smp_callin stored several registers on stack, corrupting top of pt_regs structure including status field. As a result, kernel attempted to save or restore inexistent V context.

Severity

7.8 (High)


                  
                    CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Show details on source website

JSON

To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2024-38667"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-787"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-06-24T14:15:12Z",
    "severity": "HIGH"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nriscv: prevent pt_regs corruption for secondary idle threads\n\nTop of the kernel thread stack should be reserved for pt_regs. However\nthis is not the case for the idle threads of the secondary boot harts.\nTheir stacks overlap with their pt_regs, so both may get corrupted.\n\nSimilar issue has been fixed for the primary hart, see c7cdd96eca28\n(\"riscv: prevent stack corruption by reserving task_pt_regs(p) early\").\nHowever that fix was not propagated to the secondary harts. The problem\nhas been noticed in some CPU hotplug tests with V enabled. The function\nsmp_callin stored several registers on stack, corrupting top of pt_regs\nstructure including status field. As a result, kernel attempted to save\nor restore inexistent V context.",
  "id": "GHSA-cqg5-mcpx-q78p",
  "modified": "2024-06-26T15:31:01Z",
  "published": "2024-06-24T15:31:45Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-38667"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0c1f28c32a194303da630fca89481334b9547b80"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/3090c06d50eaa91317f84bf3eac4c265e6cb8d44"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a638b0461b58aa3205cd9d5f14d6f703d795b4af"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ea22d4195cca13d5fdbc4d6555a2dfb8a7867a9e"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2024-38667 (GCVE-0-2024-38667)

Vulnerability from cvelistv5 – Published: 2024-06-24 13:52 – Updated: 2026-05-11 20:20

Title

riscv: prevent pt_regs corruption for secondary idle threads

Summary

In the Linux kernel, the following vulnerability has been resolved: riscv: prevent pt_regs corruption for secondary idle threads Top of the kernel thread stack should be reserved for pt_regs. However this is not the case for the idle threads of the secondary boot harts. Their stacks overlap with their pt_regs, so both may get corrupted. Similar issue has been fixed for the primary hart, see c7cdd96eca28 ("riscv: prevent stack corruption by reserving task_pt_regs(p) early"). However that fix was not propagated to the secondary harts. The problem has been noticed in some CPU hotplug tests with V enabled. The function smp_callin stored several registers on stack, corrupting top of pt_regs structure including status field. As a result, kernel attempted to save or restore inexistent V context.

Severity

No CVSS data available.

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2024-09-10 17:08 UTC

Assigner

Linux mitre root Scorecard

References

4 references

URL	Tags
https://git.kernel.org/stable/c/ea22d4195cca13d5f…
https://git.kernel.org/stable/c/3090c06d50eaa9131…
https://git.kernel.org/stable/c/0c1f28c32a194303d…
https://git.kernel.org/stable/c/a638b0461b58aa320…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 2875fe0561569f82d0e63658ccf0d11ce7da8922 , < ea22d4195cca13d5fdbc4d6555a2dfb8a7867a9e (git) Affected: 2875fe0561569f82d0e63658ccf0d11ce7da8922 , < 3090c06d50eaa91317f84bf3eac4c265e6cb8d44 (git) Affected: 2875fe0561569f82d0e63658ccf0d11ce7da8922 , < 0c1f28c32a194303da630fca89481334b9547b80 (git) Affected: 2875fe0561569f82d0e63658ccf0d11ce7da8922 , < a638b0461b58aa3205cd9d5f14d6f703d795b4af (git)
Linux	Linux	Affected: 5.7 Unaffected: 0 , < 5.7 (semver) Unaffected: 6.1.93 , ≤ 6.1.* (semver) Unaffected: 6.6.33 , ≤ 6.6.* (semver) Unaffected: 6.9.4 , ≤ 6.9.* (semver) Unaffected: 6.10 , ≤ * (original_commit_for_fix)

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-02T04:12:26.094Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/ea22d4195cca13d5fdbc4d6555a2dfb8a7867a9e"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/3090c06d50eaa91317f84bf3eac4c265e6cb8d44"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/0c1f28c32a194303da630fca89481334b9547b80"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/a638b0461b58aa3205cd9d5f14d6f703d795b4af"
          }
        ],
        "title": "CVE Program Container"
      },
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2024-38667",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2024-09-10T17:08:46.656306Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2024-09-11T17:34:43.880Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "arch/riscv/kernel/cpu_ops_sbi.c",
            "arch/riscv/kernel/cpu_ops_spinwait.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "ea22d4195cca13d5fdbc4d6555a2dfb8a7867a9e",
              "status": "affected",
              "version": "2875fe0561569f82d0e63658ccf0d11ce7da8922",
              "versionType": "git"
            },
            {
              "lessThan": "3090c06d50eaa91317f84bf3eac4c265e6cb8d44",
              "status": "affected",
              "version": "2875fe0561569f82d0e63658ccf0d11ce7da8922",
              "versionType": "git"
            },
            {
              "lessThan": "0c1f28c32a194303da630fca89481334b9547b80",
              "status": "affected",
              "version": "2875fe0561569f82d0e63658ccf0d11ce7da8922",
              "versionType": "git"
            },
            {
              "lessThan": "a638b0461b58aa3205cd9d5f14d6f703d795b4af",
              "status": "affected",
              "version": "2875fe0561569f82d0e63658ccf0d11ce7da8922",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "arch/riscv/kernel/cpu_ops_sbi.c",
            "arch/riscv/kernel/cpu_ops_spinwait.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.7"
            },
            {
              "lessThan": "5.7",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.93",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.33",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.9.*",
              "status": "unaffected",
              "version": "6.9.4",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.10",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.93",
                  "versionStartIncluding": "5.7",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.33",
                  "versionStartIncluding": "5.7",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.9.4",
                  "versionStartIncluding": "5.7",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.10",
                  "versionStartIncluding": "5.7",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nriscv: prevent pt_regs corruption for secondary idle threads\n\nTop of the kernel thread stack should be reserved for pt_regs. However\nthis is not the case for the idle threads of the secondary boot harts.\nTheir stacks overlap with their pt_regs, so both may get corrupted.\n\nSimilar issue has been fixed for the primary hart, see c7cdd96eca28\n(\"riscv: prevent stack corruption by reserving task_pt_regs(p) early\").\nHowever that fix was not propagated to the secondary harts. The problem\nhas been noticed in some CPU hotplug tests with V enabled. The function\nsmp_callin stored several registers on stack, corrupting top of pt_regs\nstructure including status field. As a result, kernel attempted to save\nor restore inexistent V context."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-11T20:20:45.193Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/ea22d4195cca13d5fdbc4d6555a2dfb8a7867a9e"
        },
        {
          "url": "https://git.kernel.org/stable/c/3090c06d50eaa91317f84bf3eac4c265e6cb8d44"
        },
        {
          "url": "https://git.kernel.org/stable/c/0c1f28c32a194303da630fca89481334b9547b80"
        },
        {
          "url": "https://git.kernel.org/stable/c/a638b0461b58aa3205cd9d5f14d6f703d795b4af"
        }
      ],
      "title": "riscv: prevent pt_regs corruption for secondary idle threads",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2024-38667",
    "datePublished": "2024-06-24T13:52:25.399Z",
    "dateReserved": "2024-06-21T11:16:40.598Z",
    "dateUpdated": "2026-05-11T20:20:45.193Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

Action not permitted

GHSA-CQG5-MCPX-Q78P

CVE-2024-38667 (GCVE-0-2024-38667)

Tags

Sightings

Nomenclature

Related by attack behaviour