Vulnerability-Lookup

GHSA-WHM8-436X-PVRJ

Vulnerability from github – Published: 2025-05-01 15:31 – Updated: 2026-01-23 18:31

Details

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

riscv: process: fix kernel info leakage

thread_struct's s[12] may contain random kernel memory content, which may be finally leaked to userspace. This is a security hole. Fix it by clearing the s[12] array in thread_struct when fork.

As for kthread case, it's better to clear the s[12] array as well.

Severity

7.1 (High)


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

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{
  "affected": [],
  "aliases": [
    "CVE-2022-49852"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-05-01T15:16:08Z",
    "severity": "HIGH"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nriscv: process: fix kernel info leakage\n\nthread_struct\u0027s s[12] may contain random kernel memory content, which\nmay be finally leaked to userspace. This is a security hole. Fix it\nby clearing the s[12] array in thread_struct when fork.\n\nAs for kthread case, it\u0027s better to clear the s[12] array as well.",
  "id": "GHSA-whm8-436x-pvrj",
  "modified": "2026-01-23T18:31:22Z",
  "published": "2025-05-01T15:31:50Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-49852"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/358a68f98304b40b201ba5afe94c20355aa3dc68"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/6510c78490c490a6636e48b61eeaa6fb65981f4b"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/c4601d30f7d989b4f354df899ab85b5f7a750d30"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/c5c0b3167537793a7cf936fb240366eefd2fc7fb"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/cc36c7fa5d9384602529ba3eea8c5daee7be4dbc"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e56d18a976dda653194218df6d40d8122c775712"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2022-49852 (GCVE-0-2022-49852)

Vulnerability from cvelistv5 – Published: 2025-05-01 14:10 – Updated: 2026-05-11 19:08

Title

riscv: process: fix kernel info leakage

Summary

In the Linux kernel, the following vulnerability has been resolved: riscv: process: fix kernel info leakage thread_struct's s[12] may contain random kernel memory content, which may be finally leaked to userspace. This is a security hole. Fix it by clearing the s[12] array in thread_struct when fork. As for kthread case, it's better to clear the s[12] array as well.

Severity

No CVSS data available.

Assigner

Linux CNA under the mitre root

CNA scorecard D 54/100 over 6633 records in the last 180 days details

References

6 references

URL	Tags
https://git.kernel.org/stable/c/c4601d30f7d989b4f…
https://git.kernel.org/stable/c/c5c0b3167537793a7…
https://git.kernel.org/stable/c/e56d18a976dda6531…
https://git.kernel.org/stable/c/cc36c7fa5d9384602…
https://git.kernel.org/stable/c/358a68f98304b40b2…
https://git.kernel.org/stable/c/6510c78490c490a66…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 7db91e57a0acde126a162ababfb1e0ab190130cb , < c4601d30f7d989b4f354df899ab85b5f7a750d30 (git) Affected: 7db91e57a0acde126a162ababfb1e0ab190130cb , < c5c0b3167537793a7cf936fb240366eefd2fc7fb (git) Affected: 7db91e57a0acde126a162ababfb1e0ab190130cb , < e56d18a976dda653194218df6d40d8122c775712 (git) Affected: 7db91e57a0acde126a162ababfb1e0ab190130cb , < cc36c7fa5d9384602529ba3eea8c5daee7be4dbc (git) Affected: 7db91e57a0acde126a162ababfb1e0ab190130cb , < 358a68f98304b40b201ba5afe94c20355aa3dc68 (git) Affected: 7db91e57a0acde126a162ababfb1e0ab190130cb , < 6510c78490c490a6636e48b61eeaa6fb65981f4b (git)
Linux	Linux	Affected: 4.15 Unaffected: 0 , < 4.15 (semver) Unaffected: 4.19.267 , ≤ 4.19.* (semver) Unaffected: 5.4.225 , ≤ 5.4.* (semver) Unaffected: 5.10.155 , ≤ 5.10.* (semver) Unaffected: 5.15.79 , ≤ 5.15.* (semver) Unaffected: 6.0.9 , ≤ 6.0.* (semver) Unaffected: 6.1 , ≤ * (original_commit_for_fix)

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{
  "containers": {
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        {
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          "programFiles": [
            "arch/riscv/kernel/process.c"
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          ]
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              "versionType": "semver"
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}

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.
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GHSA-WHM8-436X-PVRJ

CVE-2022-49852 (GCVE-0-2022-49852)

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