{
  "containers": {
    "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": "2026-08-17T05:43:17.664Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}