Vulnerability-Lookup

GHSA-F6WQ-H8G2-9J9P

Vulnerability from github – Published: 2026-05-27 15:33 – Updated: 2026-05-27 15:33

Details

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

drm/amdgpu: Use kvfree instead of kfree in amdgpu_gmc_get_nps_memranges()

amdgpu_discovery_get_nps_info() internally allocates memory for ranges using kvcalloc(), which may use vmalloc() for large allocation. Using kfree() to release vmalloc memory will lead to a memory corruption.

Use kvfree() to safely handle both kmalloc and vmalloc allocations.

Compile tested only. Issue found using a prototype static analysis tool and code review.

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{
  "affected": [],
  "aliases": [
    "CVE-2026-45853"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-05-27T14:16:57Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amdgpu: Use kvfree instead of kfree in amdgpu_gmc_get_nps_memranges()\n\namdgpu_discovery_get_nps_info() internally allocates memory for ranges\nusing kvcalloc(), which may use vmalloc() for large allocation. Using\nkfree() to release vmalloc memory will lead to a memory corruption.\n\nUse kvfree() to safely handle both kmalloc and vmalloc allocations.\n\nCompile tested only. Issue found using a prototype static analysis tool\nand code review.",
  "id": "GHSA-f6wq-h8g2-9j9p",
  "modified": "2026-05-27T15:33:13Z",
  "published": "2026-05-27T15:33:13Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-45853"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0c44d61945c4a80775292d96460aa2f22e62f86c"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/16e7e7ad8cdc6b4c4af7f31e262f1494c1b2a55e"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/9ae85b0c1909b6c6bfd2636b04cdaf7f520bf2b5"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f441538893eba6347b983f2904819ca6c99da65e"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

CVE-2026-45853 (GCVE-0-2026-45853)

Vulnerability from cvelistv5 – Published: 2026-05-27 12:15 – Updated: 2026-05-27 12:15

Title

drm/amdgpu: Use kvfree instead of kfree in amdgpu_gmc_get_nps_memranges()

Summary

In the Linux kernel, the following vulnerability has been resolved: drm/amdgpu: Use kvfree instead of kfree in amdgpu_gmc_get_nps_memranges() amdgpu_discovery_get_nps_info() internally allocates memory for ranges using kvcalloc(), which may use vmalloc() for large allocation. Using kfree() to release vmalloc memory will lead to a memory corruption. Use kvfree() to safely handle both kmalloc and vmalloc allocations. Compile tested only. Issue found using a prototype static analysis tool and code review.

Severity

No CVSS data available.

Assigner

Linux

References

4 references

URL	Tags
https://git.kernel.org/stable/c/16e7e7ad8cdc6b4c4…
https://git.kernel.org/stable/c/9ae85b0c1909b6c6b…
https://git.kernel.org/stable/c/f441538893eba6347…
https://git.kernel.org/stable/c/0c44d61945c4a8077…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: b194d21b9bcc15b50df1bc3ff7428e51c2918a6f , < 16e7e7ad8cdc6b4c4af7f31e262f1494c1b2a55e (git) Affected: b194d21b9bcc15b50df1bc3ff7428e51c2918a6f , < 9ae85b0c1909b6c6bfd2636b04cdaf7f520bf2b5 (git) Affected: b194d21b9bcc15b50df1bc3ff7428e51c2918a6f , < f441538893eba6347b983f2904819ca6c99da65e (git) Affected: b194d21b9bcc15b50df1bc3ff7428e51c2918a6f , < 0c44d61945c4a80775292d96460aa2f22e62f86c (git)
Linux	Linux	Affected: 6.11 Unaffected: 0 , < 6.11 (semver) Unaffected: 6.12.75 , ≤ 6.12.* (semver) Unaffected: 6.18.14 , ≤ 6.18.* (semver) Unaffected: 6.19.4 , ≤ 6.19.* (semver) Unaffected: 7.0 , ≤ * (original_commit_for_fix)

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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/gpu/drm/amd/amdgpu/amdgpu_gmc.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "16e7e7ad8cdc6b4c4af7f31e262f1494c1b2a55e",
              "status": "affected",
              "version": "b194d21b9bcc15b50df1bc3ff7428e51c2918a6f",
              "versionType": "git"
            },
            {
              "lessThan": "9ae85b0c1909b6c6bfd2636b04cdaf7f520bf2b5",
              "status": "affected",
              "version": "b194d21b9bcc15b50df1bc3ff7428e51c2918a6f",
              "versionType": "git"
            },
            {
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              "status": "affected",
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              "versionType": "git"
            }
          ]
        },
        {
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          "programFiles": [
            "drivers/gpu/drm/amd/amdgpu/amdgpu_gmc.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.11"
            },
            {
              "lessThan": "6.11",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.75",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.14",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.19.*",
              "status": "unaffected",
              "version": "6.19.4",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.0",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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                  "versionStartIncluding": "6.11",
                  "vulnerable": true
                },
                {
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      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amdgpu: Use kvfree instead of kfree in amdgpu_gmc_get_nps_memranges()\n\namdgpu_discovery_get_nps_info() internally allocates memory for ranges\nusing kvcalloc(), which may use vmalloc() for large allocation. Using\nkfree() to release vmalloc memory will lead to a memory corruption.\n\nUse kvfree() to safely handle both kmalloc and vmalloc allocations.\n\nCompile tested only. Issue found using a prototype static analysis tool\nand code review."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-27T12:15:27.453Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
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        {
          "url": "https://git.kernel.org/stable/c/0c44d61945c4a80775292d96460aa2f22e62f86c"
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      ],
      "title": "drm/amdgpu: Use kvfree instead of kfree in amdgpu_gmc_get_nps_memranges()",
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    "assignerShortName": "Linux",
    "cveId": "CVE-2026-45853",
    "datePublished": "2026-05-27T12:15:27.453Z",
    "dateReserved": "2026-05-13T15:03:33.079Z",
    "dateUpdated": "2026-05-27T12:15:27.453Z",
    "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.

Detection rules are retrieved from Rulezet.

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GHSA-F6WQ-H8G2-9J9P

CVE-2026-45853 (GCVE-0-2026-45853)

Tags

Sightings

Nomenclature