{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/accel/rocket/rocket_gem.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "18abd88d19ea195e2e1547fca0970c2f91d77a42",
              "status": "affected",
              "version": "658ebeac33517bd3169d4b65ed801e9065d0211a",
              "versionType": "git"
            },
            {
              "lessThan": "451f1ccbbdb7b65021646704b15902655f8d228a",
              "status": "affected",
              "version": "658ebeac33517bd3169d4b65ed801e9065d0211a",
              "versionType": "git"
            },
            {
              "lessThan": "f706e6a4ce75585af979aec3dcbdce68bc76306b",
              "status": "affected",
              "version": "658ebeac33517bd3169d4b65ed801e9065d0211a",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/accel/rocket/rocket_gem.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": "6.18.35",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.0.*",
              "status": "unaffected",
              "version": "7.0.12",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.1",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.35",
                  "versionStartIncluding": "6.18",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.0.12",
                  "versionStartIncluding": "6.18",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.1",
                  "versionStartIncluding": "6.18",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\naccel/rocket: fix UAF via dangling GEM handle in create_bo\n\nrocket_ioctl_create_bo() inserts a GEM handle into the file\u0027s IDR via\ndrm_gem_handle_create() early on, then performs several operations that\ncan fail (sgt allocation, drm_mm insert, iommu_map). If any fail after\nthe handle is live, the error path calls drm_gem_shmem_object_free()\nwhich kfree\u0027s the object without removing the handle from the IDR.\n\nThis leaves a dangling handle pointing to freed slab memory. Any\nsubsequent ioctl using that handle (PREP_BO, FINI_BO, SUBMIT) calls\ndrm_gem_object_lookup() and dereferences freed memory (UAF).\n\nFix by moving drm_gem_handle_create() to after all fallible operations\nsucceed, matching the pattern used by panfrost, lima, and etnaviv.\n\nAlso fix drm_mm_insert_node_generic() whose return value was silently\noverwritten by iommu_map_sgtable() on the next line. Add the missing\nerror check.\n\n[tomeu: Move handle creation to the very end]"
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 7.8,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "scenarios": [
            {
              "lang": "en",
              "value": "AV:L - The bug is reached only through DRM ioctls on the local /dev/accel/accel* character device; there is no network, adjacent-wireless, or physical bus path to rocket_ioctl_create_bo().\nAC:L - An attacker fully controls both steps\u2014forcing CREATE_BO to fail after handle insertion (e.g., by exhausting the per-fd IOMMU drm_mm aperture or triggering sgt/iommu_map errors) and then issuing PREP_BO/FINI_BO/SUBMIT with the returned dangling handle\u2014without depending on external timing or victim state.\nPR:L - All rocket ioctls are registered with DRM_IOCTL_DEF_DRV flags 0 (no DRM_ROOT_ONLY/DRM_AUTH/DRM_MASTER), requiring only the ability to open the accel device node, which is standard unprivileged local access on RK3588 edge-AI/embedded systems running ML workloads.\nUI:N - Exploitation requires no action from a separate victim; the attacker creates the dangling handle and triggers the UAF through their own ioctl sequence on a device they opened.\nS:U - Impact is kernel heap UAF leading to local privilege escalation or crash within the same kernel security authority; it is not a VM escape, IOMMU DMA-boundary bypass, or cross-hypervisor attack.\nC:H - The dangling GEM handle causes use-after-free of a kmalloc\u0027d rocket_gem_object; subsequent lookups dereference freed slab memory (resv, sgt, mm node fields), enabling arbitrary kernel memory read via heap grooming.\nI:H - UAF on the GEM object structure allows heap spraying to corrupt kernel metadata and control flow; the SUBMIT ioctl path further processes corrupted BO pointers for NPU job scheduling, supporting arbitrary write and code execution primitives.\nA:H - UAF dereferences in PREP_BO/FINI_BO/SUBMIT reliably cause kernel oops/panic, and the dangling-handle condition is repeatable for sustained denial of service."
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-05T12:38:08.050Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/18abd88d19ea195e2e1547fca0970c2f91d77a42"
        },
        {
          "url": "https://git.kernel.org/stable/c/451f1ccbbdb7b65021646704b15902655f8d228a"
        },
        {
          "url": "https://git.kernel.org/stable/c/f706e6a4ce75585af979aec3dcbdce68bc76306b"
        }
      ],
      "title": "accel/rocket: fix UAF via dangling GEM handle in create_bo",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-64008",
    "datePublished": "2026-07-19T14:56:23.746Z",
    "dateReserved": "2026-07-19T07:54:57.026Z",
    "dateUpdated": "2026-08-05T12:38:08.050Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}