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GHSA-JCQW-583M-JHJV

Vulnerability from github – Published: 2025-12-09 18:30 – Updated: 2025-12-09 18:30

Details

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

riscv: mm: add missing memcpy in kasan_init

Hi Atish,

It seems that the panic is due to the missing memcpy during kasan_init. Could you please check whether this patch is helpful?

When doing kasan_populate, the new allocated base_pud/base_p4d should contain kasan_early_shadow_{pud, p4d}'s content. Add the missing memcpy to avoid page fault when read/write kasan shadow region.

Tested on: - qemu with sv57 and CONFIG_KASAN on. - qemu with sv48 and CONFIG_KASAN on.

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{
  "affected": [],
  "aliases": [
    "CVE-2022-50657"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-12-09T16:17:17Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nriscv: mm: add missing memcpy in kasan_init\n\nHi Atish,\n\nIt seems that the panic is due to the missing memcpy during kasan_init.\nCould you please check whether this patch is helpful?\n\nWhen doing kasan_populate, the new allocated base_pud/base_p4d should\ncontain kasan_early_shadow_{pud, p4d}\u0027s content. Add the missing memcpy\nto avoid page fault when read/write kasan shadow region.\n\nTested on:\n - qemu with sv57 and CONFIG_KASAN on.\n - qemu with sv48 and CONFIG_KASAN on.",
  "id": "GHSA-jcqw-583m-jhjv",
  "modified": "2025-12-09T18:30:30Z",
  "published": "2025-12-09T18:30:30Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-50657"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/9f2ac64d6ca60db99132e08628ac2899f956a0ec"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ff0f6becf3a6f817838b6f80a2c9cca43dce0576"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

CVE-2022-50657 (GCVE-0-2022-50657)

Vulnerability from cvelistv5 – Published: 2025-12-09 01:29 – Updated: 2025-12-09 01:29

Title

riscv: mm: add missing memcpy in kasan_init

Summary

In the Linux kernel, the following vulnerability has been resolved: riscv: mm: add missing memcpy in kasan_init Hi Atish, It seems that the panic is due to the missing memcpy during kasan_init. Could you please check whether this patch is helpful? When doing kasan_populate, the new allocated base_pud/base_p4d should contain kasan_early_shadow_{pud, p4d}'s content. Add the missing memcpy to avoid page fault when read/write kasan shadow region. Tested on: - qemu with sv57 and CONFIG_KASAN on. - qemu with sv48 and CONFIG_KASAN on.

Severity ?

No CVSS data available.

Assigner

Linux

References

URL

Tags

	https://git.kernel.org/stable/c/ff0f6becf3a6f8178…
	https://git.kernel.org/stable/c/9f2ac64d6ca60db99…

Impacted products

Vendor

Product

Version

Linux

Affected: 8fbdccd2b17335e1881a23865e98c63fcc345938 , < ff0f6becf3a6f817838b6f80a2c9cca43dce0576 (git)
Affected: 8fbdccd2b17335e1881a23865e98c63fcc345938 , < 9f2ac64d6ca60db99132e08628ac2899f956a0ec (git)

Linux

Affected: 5.18
Unaffected: 0 , < 5.18 (semver)
Unaffected: 6.0.7 , ≤ 6.0.* (semver)
Unaffected: 6.1 , ≤ * (original_commit_for_fix)

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        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "arch/riscv/mm/kasan_init.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "ff0f6becf3a6f817838b6f80a2c9cca43dce0576",
              "status": "affected",
              "version": "8fbdccd2b17335e1881a23865e98c63fcc345938",
              "versionType": "git"
            },
            {
              "lessThan": "9f2ac64d6ca60db99132e08628ac2899f956a0ec",
              "status": "affected",
              "version": "8fbdccd2b17335e1881a23865e98c63fcc345938",
              "versionType": "git"
            }
          ]
        },
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          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.18"
            },
            {
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              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.0.*",
              "status": "unaffected",
              "version": "6.0.7",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.1",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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                  "vulnerable": true
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        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-12-09T01:29:04.968Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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          "url": "https://git.kernel.org/stable/c/ff0f6becf3a6f817838b6f80a2c9cca43dce0576"
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        {
          "url": "https://git.kernel.org/stable/c/9f2ac64d6ca60db99132e08628ac2899f956a0ec"
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    "assignerShortName": "Linux",
    "cveId": "CVE-2022-50657",
    "datePublished": "2025-12-09T01:29:04.968Z",
    "dateReserved": "2025-12-09T01:26:45.989Z",
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    "state": "PUBLISHED"
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Sightings

Author	Source	Type	Date

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.

Detection rules are retrieved from Rulezet.

Action not permitted

GHSA-JCQW-583M-JHJV

CVE-2022-50657 (GCVE-0-2022-50657)

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