github - ghsa-gvc6-jh6p-v6h4

ghsa-gvc6-jh6p-v6h4

Vulnerability from github

Published

2024-05-20 12:30

Modified

2024-05-20 12:30

Details

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

riscv: Fix loading 64-bit NOMMU kernels past the start of RAM

commit 3335068f8721 ("riscv: Use PUD/P4D/PGD pages for the linear mapping") added logic to allow using RAM below the kernel load address. However, this does not work for NOMMU, where PAGE_OFFSET is fixed to the kernel load address. Since that range of memory corresponds to PFNs below ARCH_PFN_OFFSET, mm initialization runs off the beginning of mem_map and corrupts adjacent kernel memory. Fix this by restoring the previous behavior for NOMMU kernels.

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{
  "affected": [],
  "aliases": [
    "CVE-2024-35987"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-05-20T10:15:13Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nriscv: Fix loading 64-bit NOMMU kernels past the start of RAM\n\ncommit 3335068f8721 (\"riscv: Use PUD/P4D/PGD pages for the linear\nmapping\") added logic to allow using RAM below the kernel load address.\nHowever, this does not work for NOMMU, where PAGE_OFFSET is fixed to the\nkernel load address. Since that range of memory corresponds to PFNs\nbelow ARCH_PFN_OFFSET, mm initialization runs off the beginning of\nmem_map and corrupts adjacent kernel memory. Fix this by restoring the\nprevious behavior for NOMMU kernels.",
  "id": "GHSA-gvc6-jh6p-v6h4",
  "modified": "2024-05-20T12:30:29Z",
  "published": "2024-05-20T12:30:29Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-35987"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/aea702dde7e9876fb00571a2602f25130847bf0f"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b008e327fa570aca210f98c817757649bae56694"
    },
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      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ea6628e4e2353978af7e3b4ad4fdaab6149acf3d"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

cve-2024-35987

Vulnerability from cvelistv5

Published

2024-05-20 09:47

Modified

2024-11-05 09:26

Severity ?

Summary

riscv: Fix loading 64-bit NOMMU kernels past the start of RAM

References

▼	URL	Tags
	https://git.kernel.org/stable/c/b008e327fa570aca210f98c817757649bae56694
	https://git.kernel.org/stable/c/ea6628e4e2353978af7e3b4ad4fdaab6149acf3d
	https://git.kernel.org/stable/c/aea702dde7e9876fb00571a2602f25130847bf0f

Impacted products

Vendor

Product

Version

▼

Linux

Version: 3335068f8721
Version: 3335068f8721
Version: 3335068f8721

Linux

Version: 6.4

Show details on NVD website

JSON

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                "role": "CISA Coordinator",
                "timestamp": "2024-05-21T15:11:39.923129Z",
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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.

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