Vulnerability-Lookup

FKIE_CVE-2026-64008

Vulnerability from fkie_nvd - Published: 2026-07-19 16:17 - Updated: 2026-10-02 19:55

Severity

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

Summary

In the Linux kernel, the following vulnerability has been resolved: accel/rocket: fix UAF via dangling GEM handle in create_bo rocket_ioctl_create_bo() inserts a GEM handle into the file's IDR via drm_gem_handle_create() early on, then performs several operations that can fail (sgt allocation, drm_mm insert, iommu_map). If any fail after the handle is live, the error path calls drm_gem_shmem_object_free() which kfree's the object without removing the handle from the IDR. This leaves a dangling handle pointing to freed slab memory. Any subsequent ioctl using that handle (PREP_BO, FINI_BO, SUBMIT) calls drm_gem_object_lookup() and dereferences freed memory (UAF). Fix by moving drm_gem_handle_create() to after all fallible operations succeed, matching the pattern used by panfrost, lima, and etnaviv. Also fix drm_mm_insert_node_generic() whose return value was silently overwritten by iommu_map_sgtable() on the next line. Add the missing error check. [tomeu: Move handle creation to the very end]

References

URL	Tags
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/18abd88d19ea195e2e1547fca0970c2f91d77a42	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/451f1ccbbdb7b65021646704b15902655f8d228a	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/f706e6a4ce75585af979aec3dcbdce68bc76306b	Patch

Impacted products

Vendor	Product	Version
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	7.1
linux	linux_kernel	7.1
linux	linux_kernel	7.1
linux	linux_kernel	7.1
linux	linux_kernel	7.1

JSON

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{
  "affected": [
    {
      "affectedData": [
        {
          "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": [
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              "version": "658ebeac33517bd3169d4b65ed801e9065d0211a",
              "versionType": "git"
            },
            {
              "lessThan": "451f1ccbbdb7b65021646704b15902655f8d228a",
              "status": "affected",
              "version": "658ebeac33517bd3169d4b65ed801e9065d0211a",
              "versionType": "git"
            },
            {
              "lessThan": "f706e6a4ce75585af979aec3dcbdce68bc76306b",
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              "versionType": "git"
            }
          ]
        },
        {
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          "programFiles": [
            "drivers/accel/rocket/rocket_gem.c"
          ],
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          "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"
            }
          ]
        }
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "configurations": [
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  "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]"
    }
  ],
  "id": "CVE-2026-64008",
  "lastModified": "2026-10-02T19:55:18.030",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 7.8,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 5.9,
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "type": "Secondary"
      }
    ]
  },
  "published": "2026-07-19T16:17:40.557",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/18abd88d19ea195e2e1547fca0970c2f91d77a42"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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      ],
      "url": "https://git.kernel.org/stable/c/f706e6a4ce75585af979aec3dcbdce68bc76306b"
    }
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  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-416"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}

CVE-2026-64008 (GCVE-0-2026-64008)

Vulnerability from cvelistv5 – Published: 2026-07-19 14:56 – Updated: 2026-08-05 12:38

Title

accel/rocket: fix UAF via dangling GEM handle in create_bo

Summary

Severity

7.8 (High)


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

Assigner

Linux mitre root Scorecard

References

3 references

URL	Tags
https://git.kernel.org/stable/c/18abd88d19ea195e2…
https://git.kernel.org/stable/c/451f1ccbbdb7b6502…
https://git.kernel.org/stable/c/f706e6a4ce75585af…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 658ebeac33517bd3169d4b65ed801e9065d0211a , < 18abd88d19ea195e2e1547fca0970c2f91d77a42 (git) Affected: 658ebeac33517bd3169d4b65ed801e9065d0211a , < 451f1ccbbdb7b65021646704b15902655f8d228a (git) Affected: 658ebeac33517bd3169d4b65ed801e9065d0211a , < f706e6a4ce75585af979aec3dcbdce68bc76306b (git)
Linux	Linux	Affected: 6.18 Unaffected: 0 , < 6.18 (semver) Unaffected: 6.18.35 , ≤ 6.18.* (semver) Unaffected: 7.0.12 , ≤ 7.0.* (semver) Unaffected: 7.1 , ≤ * (original_commit_for_fix)

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/accel/rocket/rocket_gem.c"
          ],
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}

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.

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.
Browse all ATT&CK techniques and the vulnerabilities related to each.

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FKIE_CVE-2026-64008

CVE-2026-64008 (GCVE-0-2026-64008)

Tags

Sightings

Nomenclature

Related by attack behaviour