Vulnerability-Lookup

CVE-2026-43280 (GCVE-0-2026-43280)

Vulnerability from cvelistv5 – Published: 2026-05-06 11:29 – Updated: 2026-05-06 11:29

Title

drm/xe: Add bounds check on pat_index to prevent OOB kernel read in madvise

Summary

In the Linux kernel, the following vulnerability has been resolved: drm/xe: Add bounds check on pat_index to prevent OOB kernel read in madvise When user provides a bogus pat_index value through the madvise IOCTL, the xe_pat_index_get_coh_mode() function performs an array access without validating bounds. This allows a malicious user to trigger an out-of-bounds kernel read from the xe->pat.table array. The vulnerability exists because the validation in madvise_args_are_sane() directly calls xe_pat_index_get_coh_mode(xe, args->pat_index.val) without first checking if pat_index is within [0, xe->pat.n_entries). Although xe_pat_index_get_coh_mode() has a WARN_ON to catch this in debug builds, it still performs the unsafe array access in production kernels. v2(Matthew Auld) - Using array_index_nospec() to mitigate spectre attacks when the value is used v3(Matthew Auld) - Put the declarations at the start of the block (cherry picked from commit 944a3329b05510d55c69c2ef455136e2fc02de29)

Severity ?

No CVSS data available.

Assigner

Linux

References

URL

Tags

	https://git.kernel.org/stable/c/ffba51100ff61792f…
	https://git.kernel.org/stable/c/79f52655567a6471f…
	https://git.kernel.org/stable/c/fbbe32618e97eff81…

Impacted products

Vendor

Product

Version

Linux

Affected: ada7486c5668db542a7d361268df931aca5b726a , < ffba51100ff61792fefbae11ca38ac1987a818dd (git)
Affected: ada7486c5668db542a7d361268df931aca5b726a , < 79f52655567a6471ff3d0d6325ede91bb14461f4 (git)
Affected: ada7486c5668db542a7d361268df931aca5b726a , < fbbe32618e97eff81577a01eb7d9adcd64a216d7 (git)

Linux

Affected: 6.18
Unaffected: 0 , < 6.18 (semver)
Unaffected: 6.18.16 , ≤ 6.18.* (semver)
Unaffected: 6.19.6 , ≤ 6.19.* (semver)
Unaffected: 7.0 , ≤ * (original_commit_for_fix)

Show details on NVD website

JSON

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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/gpu/drm/xe/xe_vm_madvise.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "ffba51100ff61792fefbae11ca38ac1987a818dd",
              "status": "affected",
              "version": "ada7486c5668db542a7d361268df931aca5b726a",
              "versionType": "git"
            },
            {
              "lessThan": "79f52655567a6471ff3d0d6325ede91bb14461f4",
              "status": "affected",
              "version": "ada7486c5668db542a7d361268df931aca5b726a",
              "versionType": "git"
            },
            {
              "lessThan": "fbbe32618e97eff81577a01eb7d9adcd64a216d7",
              "status": "affected",
              "version": "ada7486c5668db542a7d361268df931aca5b726a",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/gpu/drm/xe/xe_vm_madvise.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.18"
            },
            {
              "lessThan": "6.18",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.16",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.19.*",
              "status": "unaffected",
              "version": "6.19.6",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.0",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.16",
                  "versionStartIncluding": "6.18",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.19.6",
                  "versionStartIncluding": "6.18",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.0",
                  "versionStartIncluding": "6.18",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/xe: Add bounds check on pat_index to prevent OOB kernel read in madvise\n\nWhen user provides a bogus pat_index value through the madvise IOCTL, the\nxe_pat_index_get_coh_mode() function performs an array access without\nvalidating bounds. This allows a malicious user to trigger an out-of-bounds\nkernel read from the xe-\u003epat.table array.\n\nThe vulnerability exists because the validation in madvise_args_are_sane()\ndirectly calls xe_pat_index_get_coh_mode(xe, args-\u003epat_index.val) without\nfirst checking if pat_index is within [0, xe-\u003epat.n_entries).\n\nAlthough xe_pat_index_get_coh_mode() has a WARN_ON to catch this in debug\nbuilds, it still performs the unsafe array access in production kernels.\n\nv2(Matthew Auld)\n- Using array_index_nospec() to mitigate spectre attacks when the value\nis used\n\nv3(Matthew Auld)\n- Put the declarations at the start of the block\n\n(cherry picked from commit 944a3329b05510d55c69c2ef455136e2fc02de29)"
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-06T11:29:01.562Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/ffba51100ff61792fefbae11ca38ac1987a818dd"
        },
        {
          "url": "https://git.kernel.org/stable/c/79f52655567a6471ff3d0d6325ede91bb14461f4"
        },
        {
          "url": "https://git.kernel.org/stable/c/fbbe32618e97eff81577a01eb7d9adcd64a216d7"
        }
      ],
      "title": "drm/xe: Add bounds check on pat_index to prevent OOB kernel read in madvise",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-43280",
    "datePublished": "2026-05-06T11:29:01.562Z",
    "dateReserved": "2026-05-01T14:12:55.998Z",
    "dateUpdated": "2026-05-06T11:29:01.562Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2026-43280\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2026-05-06T12:16:49.477\",\"lastModified\":\"2026-05-06T13:07:51.607\",\"vulnStatus\":\"Awaiting Analysis\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\ndrm/xe: Add bounds check on pat_index to prevent OOB kernel read in madvise\\n\\nWhen user provides a bogus pat_index value through the madvise IOCTL, the\\nxe_pat_index_get_coh_mode() function performs an array access without\\nvalidating bounds. This allows a malicious user to trigger an out-of-bounds\\nkernel read from the xe-\u003epat.table array.\\n\\nThe vulnerability exists because the validation in madvise_args_are_sane()\\ndirectly calls xe_pat_index_get_coh_mode(xe, args-\u003epat_index.val) without\\nfirst checking if pat_index is within [0, xe-\u003epat.n_entries).\\n\\nAlthough xe_pat_index_get_coh_mode() has a WARN_ON to catch this in debug\\nbuilds, it still performs the unsafe array access in production kernels.\\n\\nv2(Matthew Auld)\\n- Using array_index_nospec() to mitigate spectre attacks when the value\\nis used\\n\\nv3(Matthew Auld)\\n- Put the declarations at the start of the block\\n\\n(cherry picked from commit 944a3329b05510d55c69c2ef455136e2fc02de29)\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/79f52655567a6471ff3d0d6325ede91bb14461f4\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/fbbe32618e97eff81577a01eb7d9adcd64a216d7\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/ffba51100ff61792fefbae11ca38ac1987a818dd\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
  }
}

GHSA-CMXM-M5W5-F84Q

Vulnerability from github – Published: 2026-05-06 12:30 – Updated: 2026-05-06 12:30

Details

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

drm/xe: Add bounds check on pat_index to prevent OOB kernel read in madvise

When user provides a bogus pat_index value through the madvise IOCTL, the xe_pat_index_get_coh_mode() function performs an array access without validating bounds. This allows a malicious user to trigger an out-of-bounds kernel read from the xe->pat.table array.

The vulnerability exists because the validation in madvise_args_are_sane() directly calls xe_pat_index_get_coh_mode(xe, args->pat_index.val) without first checking if pat_index is within [0, xe->pat.n_entries).

Although xe_pat_index_get_coh_mode() has a WARN_ON to catch this in debug builds, it still performs the unsafe array access in production kernels.

v2(Matthew Auld) - Using array_index_nospec() to mitigate spectre attacks when the value is used

v3(Matthew Auld) - Put the declarations at the start of the block

(cherry picked from commit 944a3329b05510d55c69c2ef455136e2fc02de29)

Show details on source website

JSON

To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2026-43280"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-05-06T12:16:49Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/xe: Add bounds check on pat_index to prevent OOB kernel read in madvise\n\nWhen user provides a bogus pat_index value through the madvise IOCTL, the\nxe_pat_index_get_coh_mode() function performs an array access without\nvalidating bounds. This allows a malicious user to trigger an out-of-bounds\nkernel read from the xe-\u003epat.table array.\n\nThe vulnerability exists because the validation in madvise_args_are_sane()\ndirectly calls xe_pat_index_get_coh_mode(xe, args-\u003epat_index.val) without\nfirst checking if pat_index is within [0, xe-\u003epat.n_entries).\n\nAlthough xe_pat_index_get_coh_mode() has a WARN_ON to catch this in debug\nbuilds, it still performs the unsafe array access in production kernels.\n\nv2(Matthew Auld)\n- Using array_index_nospec() to mitigate spectre attacks when the value\nis used\n\nv3(Matthew Auld)\n- Put the declarations at the start of the block\n\n(cherry picked from commit 944a3329b05510d55c69c2ef455136e2fc02de29)",
  "id": "GHSA-cmxm-m5w5-f84q",
  "modified": "2026-05-06T12:30:36Z",
  "published": "2026-05-06T12:30:35Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-43280"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/79f52655567a6471ff3d0d6325ede91bb14461f4"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/fbbe32618e97eff81577a01eb7d9adcd64a216d7"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ffba51100ff61792fefbae11ca38ac1987a818dd"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

FKIE_CVE-2026-43280

Vulnerability from fkie_nvd - Published: 2026-05-06 12:16 - Updated: 2026-05-06 13:07

Severity ?

Summary

References

	URL	Tags
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/79f52655567a6471ff3d0d6325ede91bb14461f4
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/fbbe32618e97eff81577a01eb7d9adcd64a216d7
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/ffba51100ff61792fefbae11ca38ac1987a818dd

Impacted products

	Vendor	Product	Version

JSON

To clipboard

{
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/xe: Add bounds check on pat_index to prevent OOB kernel read in madvise\n\nWhen user provides a bogus pat_index value through the madvise IOCTL, the\nxe_pat_index_get_coh_mode() function performs an array access without\nvalidating bounds. This allows a malicious user to trigger an out-of-bounds\nkernel read from the xe-\u003epat.table array.\n\nThe vulnerability exists because the validation in madvise_args_are_sane()\ndirectly calls xe_pat_index_get_coh_mode(xe, args-\u003epat_index.val) without\nfirst checking if pat_index is within [0, xe-\u003epat.n_entries).\n\nAlthough xe_pat_index_get_coh_mode() has a WARN_ON to catch this in debug\nbuilds, it still performs the unsafe array access in production kernels.\n\nv2(Matthew Auld)\n- Using array_index_nospec() to mitigate spectre attacks when the value\nis used\n\nv3(Matthew Auld)\n- Put the declarations at the start of the block\n\n(cherry picked from commit 944a3329b05510d55c69c2ef455136e2fc02de29)"
    }
  ],
  "id": "CVE-2026-43280",
  "lastModified": "2026-05-06T13:07:51.607",
  "metrics": {},
  "published": "2026-05-06T12:16:49.477",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/79f52655567a6471ff3d0d6325ede91bb14461f4"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/fbbe32618e97eff81577a01eb7d9adcd64a216d7"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/ffba51100ff61792fefbae11ca38ac1987a818dd"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Awaiting Analysis"
}

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.

Action not permitted

CVE-2026-43280 (GCVE-0-2026-43280)

GHSA-CMXM-M5W5-F84Q

FKIE_CVE-2026-43280

Tags

Sightings

Nomenclature