Vulnerability-Lookup

FKIE_CVE-2026-72360

Vulnerability from fkie_nvd - Published: 2026-08-15 06:22 - Updated: 2026-10-16 19:17

Severity

8.4 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:H

Summary

In the Linux kernel, the following vulnerability has been resolved: drm/xe/pf: Don't attempt to process FAST_REQ or EVENT relays Currently defined VF/PF relay actions use regular REQUEST messages only and the PF shouldn't attempt to handle FAST_REQUEST nor EVENT messages as this would result in breaking the VFPF ABI protocol and also might trigger an assert on the PF side. (cherry picked from commit 1714d360fc5ae2e0886a69e979095d9c7ff3568a)

References

	URL	Tags
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/499be4b5d64209e9f18c9442f9fbeef7155ae900
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/a4208d8032abd7f591581994f31e23b80b8fe659
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/adc7dda728ca3e340a413e3bbc10cf159e1866a4
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/ed8b0d731892c68b41ecbd27c952af284816dec1

Impacted products

	Vendor	Product	Version

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/gpu/drm/xe/xe_guc_relay.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "499be4b5d64209e9f18c9442f9fbeef7155ae900",
              "status": "affected",
              "version": "98e62805921cebcd2fcac3692037ca2ebef63b4a",
              "versionType": "git"
            },
            {
              "lessThan": "adc7dda728ca3e340a413e3bbc10cf159e1866a4",
              "status": "affected",
              "version": "98e62805921cebcd2fcac3692037ca2ebef63b4a",
              "versionType": "git"
            },
            {
              "lessThan": "a4208d8032abd7f591581994f31e23b80b8fe659",
              "status": "affected",
              "version": "98e62805921cebcd2fcac3692037ca2ebef63b4a",
              "versionType": "git"
            },
            {
              "lessThan": "ed8b0d731892c68b41ecbd27c952af284816dec1",
              "status": "affected",
              "version": "98e62805921cebcd2fcac3692037ca2ebef63b4a",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/gpu/drm/xe/xe_guc_relay.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": "6.12.97",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.40",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.1.*",
              "status": "unaffected",
              "version": "7.1.5",
              "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/pf: Don\u0027t attempt to process FAST_REQ or EVENT relays\n\nCurrently defined VF/PF relay actions use regular REQUEST messages\nonly and the PF shouldn\u0027t attempt to handle FAST_REQUEST nor EVENT\nmessages as this would result in breaking the VFPF ABI protocol\nand also might trigger an assert on the PF side.\n\n(cherry picked from commit 1714d360fc5ae2e0886a69e979095d9c7ff3568a)"
    }
  ],
  "id": "CVE-2026-72360",
  "lastModified": "2026-10-16T19:17:25.337",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 8.4,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "NONE",
          "integrityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "scope": "CHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 2.0,
        "impactScore": 5.8,
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-72360",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-10-16T18:47:59.667042Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-08-15T06:22:09.430",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/499be4b5d64209e9f18c9442f9fbeef7155ae900"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/a4208d8032abd7f591581994f31e23b80b8fe659"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/adc7dda728ca3e340a413e3bbc10cf159e1866a4"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/ed8b0d731892c68b41ecbd27c952af284816dec1"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Received"
}

CVE-2026-72360 (GCVE-0-2026-72360)

Vulnerability from cvelistv5 – Published: 2026-08-15 05:56 – Updated: 2026-10-16 18:55

Title

drm/xe/pf: Don't attempt to process FAST_REQ or EVENT relays

Summary

Severity

8.4 (High)


                        
                          CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:H

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-10-16 18:47 UTC

Assigner

Linux CNA under the mitre root

CNA scorecard D 53/100 over 6992 records in the last 180 days details

References

4 references

URL	Tags
https://git.kernel.org/stable/c/499be4b5d64209e9f…
https://git.kernel.org/stable/c/adc7dda728ca3e340…
https://git.kernel.org/stable/c/a4208d8032abd7f59…
https://git.kernel.org/stable/c/ed8b0d731892c68b4…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 98e62805921cebcd2fcac3692037ca2ebef63b4a , < 499be4b5d64209e9f18c9442f9fbeef7155ae900 (git) Affected: 98e62805921cebcd2fcac3692037ca2ebef63b4a , < adc7dda728ca3e340a413e3bbc10cf159e1866a4 (git) Affected: 98e62805921cebcd2fcac3692037ca2ebef63b4a , < a4208d8032abd7f591581994f31e23b80b8fe659 (git) Affected: 98e62805921cebcd2fcac3692037ca2ebef63b4a , < ed8b0d731892c68b41ecbd27c952af284816dec1 (git)
Linux	Linux	Affected: 6.11 Unaffected: 0 , < 6.11 (semver) Unaffected: 6.12.97 , ≤ 6.12.* (semver) Unaffected: 6.18.40 , ≤ 6.18.* (semver) Unaffected: 7.1.5 , ≤ 7.1.* (semver) Unaffected: 7.2 , ≤ * (original_commit_for_fix)

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-72360",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-10-16T18:47:59.667042Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-10-16T18:55:20.266Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/gpu/drm/xe/xe_guc_relay.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "499be4b5d64209e9f18c9442f9fbeef7155ae900",
              "status": "affected",
              "version": "98e62805921cebcd2fcac3692037ca2ebef63b4a",
              "versionType": "git"
            },
            {
              "lessThan": "adc7dda728ca3e340a413e3bbc10cf159e1866a4",
              "status": "affected",
              "version": "98e62805921cebcd2fcac3692037ca2ebef63b4a",
              "versionType": "git"
            },
            {
              "lessThan": "a4208d8032abd7f591581994f31e23b80b8fe659",
              "status": "affected",
              "version": "98e62805921cebcd2fcac3692037ca2ebef63b4a",
              "versionType": "git"
            },
            {
              "lessThan": "ed8b0d731892c68b41ecbd27c952af284816dec1",
              "status": "affected",
              "version": "98e62805921cebcd2fcac3692037ca2ebef63b4a",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/gpu/drm/xe/xe_guc_relay.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": "6.12.97",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.40",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.1.*",
              "status": "unaffected",
              "version": "7.1.5",
              "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": "6.12.97",
                  "versionStartIncluding": "6.11",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.40",
                  "versionStartIncluding": "6.11",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.1.5",
                  "versionStartIncluding": "6.11",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.2",
                  "versionStartIncluding": "6.11",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/xe/pf: Don\u0027t attempt to process FAST_REQ or EVENT relays\n\nCurrently defined VF/PF relay actions use regular REQUEST messages\nonly and the PF shouldn\u0027t attempt to handle FAST_REQUEST nor EVENT\nmessages as this would result in breaking the VFPF ABI protocol\nand also might trigger an assert on the PF side.\n\n(cherry picked from commit 1714d360fc5ae2e0886a69e979095d9c7ff3568a)"
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 8.4,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:H",
            "version": "3.1"
          },
          "scenarios": [
            {
              "lang": "en",
              "value": "AV:L - A malicious VM guest with an assigned Intel Xe SR-IOV VF reaches the bug by sending crafted GuC relay messages through the local VF-to-PF driver path (guest kernel/driver to host PF via GuC), not over a remote network protocol.\nAC:L - Once assigned an Xe SR-IOV VF, a cloud GPU tenant can reliably inject FAST_REQUEST or EVENT relay messages (e.g., via a modified guest driver) and control both sides of the transaction without uncontrollable timing or memory-layout races.\nPR:L - Exploitation requires tenant-level access to a VM with a passthrough Xe SR-IOV VF (typically root or a custom guest kernel/driver to craft non-REQUEST relay types) but does not require host administrator privileges on the PF.\nUI:N - No separate victim action is required; the attacker triggers the flaw directly by sending malformed FAST_REQUEST or EVENT relay messages from their own guest environment.\nS:C - A malicious VF guest causes the host PF kernel driver to mishandle GuC relay messages, crossing the VM/hypervisor security boundary in SR-IOV GPU virtualization (guest-to-host impact on the PF).\nC:N - No memory corruption or out-of-band read occurs; VF2PF handshake and runtime-query handlers return the same bounded register data as legitimate REQUEST messages, with no additional confidentiality impact.\nI:H - FAST_REQUEST and EVENT messages are type-confused with REQUEST and routed to xe_gt_sriov_pf_service_process_request(), causing the PF to emit protocol-invalid responses that corrupt host VF/PF relay and GuC communication state.\nA:H - Violating the VF/PF relay ABI by replying to EVENT/FAST_REQUEST messages can desynchronize host GuC relay handling and trigger PF asserts (drm_WARN on debug builds), risking host GPU driver failure or denial of service affecting all tenants on the device."
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-17T05:43:17.664Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/499be4b5d64209e9f18c9442f9fbeef7155ae900"
        },
        {
          "url": "https://git.kernel.org/stable/c/adc7dda728ca3e340a413e3bbc10cf159e1866a4"
        },
        {
          "url": "https://git.kernel.org/stable/c/a4208d8032abd7f591581994f31e23b80b8fe659"
        },
        {
          "url": "https://git.kernel.org/stable/c/ed8b0d731892c68b41ecbd27c952af284816dec1"
        }
      ],
      "title": "drm/xe/pf: Don\u0027t attempt to process FAST_REQ or EVENT relays",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-72360",
    "datePublished": "2026-08-15T05:56:00.076Z",
    "dateReserved": "2026-08-09T03:40:39.921Z",
    "dateUpdated": "2026-10-16T18:55:20.266Z",
    "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.

Vulnerability timeline

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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
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