CVE-2026-68265 (GCVE-0-2026-68265)

Vulnerability from cvelistv5 – Published: 2026-08-10 12:01 – Updated: 2026-08-17 05:01
VLAI
Title
drm/xe/vm: Fix BO prefetch with CONSULT_MEM_ADVISE_PREF_LOC
Summary
In the Linux kernel, the following vulnerability has been resolved: drm/xe/vm: Fix BO prefetch with CONSULT_MEM_ADVISE_PREF_LOC When prefetch region is DRM_XE_CONSULT_MEM_ADVISE_PREF_LOC for a BO VMA, the code used it as an index into region_to_mem_type[], causing an out-of-bounds access since the value is -1. Resolve the preferred location for BO VMAs directly: local VRAM on dGFX (using the BO's tile placement) or system memory on iGPU. Discovered using AI-assisted static analysis confirmed by Intel Product Security. v2: -Fix null dereference (cherry picked from commit d9a4906ac03be9f6ed3f3b45c56c866b867fd75b)
Severity
7.3 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:H
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: c1bb69a2e8e2d55c3725e304d8b8fd189ee43fbe , < d256dac008d1d9e6378aa1a5454e89a8292d174c (git)
Affected: c1bb69a2e8e2d55c3725e304d8b8fd189ee43fbe , < c4affa4e8bc8086b4d3e8d6cf1055a624f813d72 (git)
Affected: c1bb69a2e8e2d55c3725e304d8b8fd189ee43fbe , < 7bc597ce74bab4153b2009c92eccf889e9d74044 (git)
guessed Create a notification for this product.
Linux Linux Affected: 6.18
Unaffected: 0 , < 6.18 (semver)
Unaffected: 6.18.44 , ≤ 6.18.* (semver)
Unaffected: 7.1.6 , ≤ 7.1.* (semver)
Unaffected: 7.2 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
Show details on NVD website
To clipboard 

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/gpu/drm/xe/xe_vm.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "d256dac008d1d9e6378aa1a5454e89a8292d174c",
              "status": "affected",
              "version": "c1bb69a2e8e2d55c3725e304d8b8fd189ee43fbe",
              "versionType": "git"
            },
            {
              "lessThan": "c4affa4e8bc8086b4d3e8d6cf1055a624f813d72",
              "status": "affected",
              "version": "c1bb69a2e8e2d55c3725e304d8b8fd189ee43fbe",
              "versionType": "git"
            },
            {
              "lessThan": "7bc597ce74bab4153b2009c92eccf889e9d74044",
              "status": "affected",
              "version": "c1bb69a2e8e2d55c3725e304d8b8fd189ee43fbe",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/gpu/drm/xe/xe_vm.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": "6.18.44",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.1.*",
              "status": "unaffected",
              "version": "7.1.6",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.2",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.44",
                  "versionStartIncluding": "6.18",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.1.6",
                  "versionStartIncluding": "6.18",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.2",
                  "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/vm: Fix BO prefetch with CONSULT_MEM_ADVISE_PREF_LOC\n\nWhen prefetch region is DRM_XE_CONSULT_MEM_ADVISE_PREF_LOC for a BO VMA,\nthe code used it as an index into region_to_mem_type[], causing an\nout-of-bounds access since the value is -1.\n\nResolve the preferred location for BO VMAs directly: local VRAM on dGFX\n(using the BO\u0027s tile placement) or system memory on iGPU.\n\nDiscovered using AI-assisted static analysis confirmed by Intel Product\nSecurity.\n\nv2:\n-Fix null dereference\n\n(cherry picked from commit d9a4906ac03be9f6ed3f3b45c56c866b867fd75b)"
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 7.3,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:H",
            "version": "3.1"
          },
          "scenarios": [
            {
              "lang": "en",
              "value": "AV:L - The bug is reached only through the DRM_IOCTL_XE_VM_BIND ioctl on an xe render node (/dev/dri/renderD*), which requires local access to the device file; there is no network-facing path into drivers/gpu/drm/xe/xe_vm.c.\nAC:L - Fully deterministic and attacker-controlled: map any BO, then issue a PREFETCH bind op with prefetch_region = DRM_XE_CONSULT_MEM_ADVISE_PREF_LOC (-1), which the ioctl validator explicitly accepts, and the out-of-bounds index is taken every time. No race, no memory-layout grooming, and no special config beyond a normal Intel Xe GPU.\nPR:L - XE_VM_BIND is registered DRM_RENDER_ALLOW, so any unprivileged user or sandboxed/containerized process holding a render-node fd (the norm for desktop, Android and GPU containers) can drive the path; no capability or root is needed.\nUI:N - The attacker performs the entire sequence (create BO, bind, prefetch) from their own process via ioctls; no victim action or interaction is required.\nS:U - The out-of-bounds access and any resulting fault or misbehaviour stay within the kernel of the same machine and are not mediated across a VM, IOMMU or other security authority boundary.\nC:H - region_to_mem_type[] is a 3-entry array indexed with 0xFFFFFFFF, an unbounded wild read roughly 16 GB past the object rather than a small bounded overread; the loaded word is consumed by the driver and, on layouts where the address is readable, exposes memory the caller must never observe, so a high confidentiality impact is the defensible assessment.\nI:L - The out-of-bounds word is used directly as the mem_type argument to xe_bo_migrate(), so uninitialized/foreign data drives xe_bo_can_migrate(), mem_type_is_vram() and add_vram() placement decisions, letting a buffer object be moved to a memory region the caller never requested; the subsequent placement check bounds this to limited modification rather than an arbitrary write.\nA:H - The 0xFFFFFFFF index computes an address far outside any valid mapping (on x86-64 the module-relative offset wraps into a non-kernel address), so the read faults in kernel mode inside an in-progress drm_exec transaction holding VM and BO locks, producing an oops and a wedged GPU context \u2014 a repeatable crash any local user can trigger."
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-17T05:01:57.952Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/d256dac008d1d9e6378aa1a5454e89a8292d174c"
        },
        {
          "url": "https://git.kernel.org/stable/c/c4affa4e8bc8086b4d3e8d6cf1055a624f813d72"
        },
        {
          "url": "https://git.kernel.org/stable/c/7bc597ce74bab4153b2009c92eccf889e9d74044"
        }
      ],
      "title": "drm/xe/vm: Fix BO prefetch with CONSULT_MEM_ADVISE_PREF_LOC",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-68265",
    "datePublished": "2026-08-10T12:01:40.271Z",
    "dateReserved": "2026-07-30T09:28:09.378Z",
    "dateUpdated": "2026-08-17T05:01:57.952Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2026-68265",
      "date": "2026-09-20",
      "epss": "0.00129",
      "percentile": "0.02967"
    },
    "nvd": {
      "cve": {
        "affected": [
          {
            "affectedData": [
              {
                "defaultStatus": "unaffected",
                "product": "Linux",
                "programFiles": [
                  "drivers/gpu/drm/xe/xe_vm.c"
                ],
                "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                "vendor": "Linux",
                "versions": [
                  {
                    "lessThan": "d256dac008d1d9e6378aa1a5454e89a8292d174c",
                    "status": "affected",
                    "version": "c1bb69a2e8e2d55c3725e304d8b8fd189ee43fbe",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "c4affa4e8bc8086b4d3e8d6cf1055a624f813d72",
                    "status": "affected",
                    "version": "c1bb69a2e8e2d55c3725e304d8b8fd189ee43fbe",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "7bc597ce74bab4153b2009c92eccf889e9d74044",
                    "status": "affected",
                    "version": "c1bb69a2e8e2d55c3725e304d8b8fd189ee43fbe",
                    "versionType": "git"
                  }
                ]
              },
              {
                "defaultStatus": "affected",
                "product": "Linux",
                "programFiles": [
                  "drivers/gpu/drm/xe/xe_vm.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": "6.18.44",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "7.1.*",
                    "status": "unaffected",
                    "version": "7.1.6",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "*",
                    "status": "unaffected",
                    "version": "7.2",
                    "versionType": "original_commit_for_fix"
                  }
                ]
              }
            ],
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
          }
        ],
        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/xe/vm: Fix BO prefetch with CONSULT_MEM_ADVISE_PREF_LOC\n\nWhen prefetch region is DRM_XE_CONSULT_MEM_ADVISE_PREF_LOC for a BO VMA,\nthe code used it as an index into region_to_mem_type[], causing an\nout-of-bounds access since the value is -1.\n\nResolve the preferred location for BO VMAs directly: local VRAM on dGFX\n(using the BO\u0027s tile placement) or system memory on iGPU.\n\nDiscovered using AI-assisted static analysis confirmed by Intel Product\nSecurity.\n\nv2:\n-Fix null dereference\n\n(cherry picked from commit d9a4906ac03be9f6ed3f3b45c56c866b867fd75b)"
          }
        ],
        "id": "CVE-2026-68265",
        "lastModified": "2026-08-17T05:18:28.990",
        "metrics": {
          "cvssMetricV31": [
            {
              "cvssData": {
                "attackComplexity": "LOW",
                "attackVector": "LOCAL",
                "availabilityImpact": "HIGH",
                "baseScore": 7.3,
                "baseSeverity": "HIGH",
                "confidentialityImpact": "HIGH",
                "integrityImpact": "LOW",
                "privilegesRequired": "LOW",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:H",
                "version": "3.1"
              },
              "exploitabilityScore": 1.8,
              "impactScore": 5.5,
              "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
              "type": "Secondary"
            }
          ]
        },
        "published": "2026-08-10T13:20:15.380",
        "references": [
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/7bc597ce74bab4153b2009c92eccf889e9d74044"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/c4affa4e8bc8086b4d3e8d6cf1055a624f813d72"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/d256dac008d1d9e6378aa1a5454e89a8292d174c"
          }
        ],
        "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "vulnStatus": "Received"
      }
    },
    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-08-13T23:13:03+00:00",
      "cve": "CVE-2026-68265",
      "id": "CVE-2026-68265",
      "initial_release_date": "2026-08-10T00:00:00+00:00",
      "product_status:known_affected": "184",
      "product_status:known_not_affected": "90",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: drm/xe/vm: Fix BO prefetch with CONSULT_MEM_ADVISE_PREF_LOC",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-68265.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-08-14T23:45:24Z",
      "cve": "CVE-2026-68265",
      "id": "CVE-2026-68265",
      "initial_release_date": "2026-08-14T17:15:00Z",
      "product_status:known_not_affected": "296",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2026-68265",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2026-68265.json",
      "version": "3"
    }
  }
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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.


Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.