Vulnerability-Lookup

FKIE_CVE-2026-97429

Vulnerability from fkie_nvd - Published: 2026-09-24 17:17 - Updated: 2026-09-25 13:17

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: drm/amdkfd: fix UAF race in destroy_queue_cpsch wait_on_destroy_queue() drops locks to wait for queue resume, allowing a concurrent destroy to free the queue. Use is_being_destroyed flag to serialize destruction.

References

	URL	Tags
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/41144829f4645c2bd4cb501d34d253858f750c0a
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/ac081deaf16a639ea7dff2f285fe421a33c1ade0
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/d98c8032c29944e1e572e1f49a0613d364fece0f

Impacted products

	Vendor	Product	Version

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "41144829f4645c2bd4cb501d34d253858f750c0a",
              "status": "affected",
              "version": "a70a93fa568b4f05aba548dadb673703eccf5480",
              "versionType": "git"
            },
            {
              "lessThan": "d98c8032c29944e1e572e1f49a0613d364fece0f",
              "status": "affected",
              "version": "a70a93fa568b4f05aba548dadb673703eccf5480",
              "versionType": "git"
            },
            {
              "lessThan": "ac081deaf16a639ea7dff2f285fe421a33c1ade0",
              "status": "affected",
              "version": "a70a93fa568b4f05aba548dadb673703eccf5480",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.5"
            },
            {
              "lessThan": "6.5",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.111",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.53",
              "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/amdkfd: fix UAF race in destroy_queue_cpsch\n\nwait_on_destroy_queue() drops locks to wait for queue resume, allowing\na concurrent destroy to free the queue. Use is_being_destroyed flag to\nserialize destruction."
    }
  ],
  "id": "CVE-2026-97429",
  "lastModified": "2026-09-25T13:17:26.507",
  "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": "2026-09-24T17:17:20.907",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/41144829f4645c2bd4cb501d34d253858f750c0a"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/ac081deaf16a639ea7dff2f285fe421a33c1ade0"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/d98c8032c29944e1e572e1f49a0613d364fece0f"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Received"
}

CVE-2026-97429 (GCVE-0-2026-97429)

Vulnerability from cvelistv5 – Published: 2026-09-24 16:03 – Updated: 2026-09-25 12:44

Title

drm/amdkfd: fix UAF race in destroy_queue_cpsch

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

References

3 references

URL	Tags
https://git.kernel.org/stable/c/41144829f4645c2bd…
https://git.kernel.org/stable/c/d98c8032c29944e1e…
https://git.kernel.org/stable/c/ac081deaf16a639ea…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: a70a93fa568b4f05aba548dadb673703eccf5480 , < 41144829f4645c2bd4cb501d34d253858f750c0a (git) Affected: a70a93fa568b4f05aba548dadb673703eccf5480 , < d98c8032c29944e1e572e1f49a0613d364fece0f (git) Affected: a70a93fa568b4f05aba548dadb673703eccf5480 , < ac081deaf16a639ea7dff2f285fe421a33c1ade0 (git)
Linux	Linux	Affected: 6.5 Unaffected: 0 , < 6.5 (semver) Unaffected: 6.12.111 , ≤ 6.12.* (semver) Unaffected: 6.18.53 , ≤ 6.18.* (semver) Unaffected: 7.2 , ≤ * (original_commit_for_fix)

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "41144829f4645c2bd4cb501d34d253858f750c0a",
              "status": "affected",
              "version": "a70a93fa568b4f05aba548dadb673703eccf5480",
              "versionType": "git"
            },
            {
              "lessThan": "d98c8032c29944e1e572e1f49a0613d364fece0f",
              "status": "affected",
              "version": "a70a93fa568b4f05aba548dadb673703eccf5480",
              "versionType": "git"
            },
            {
              "lessThan": "ac081deaf16a639ea7dff2f285fe421a33c1ade0",
              "status": "affected",
              "version": "a70a93fa568b4f05aba548dadb673703eccf5480",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.5"
            },
            {
              "lessThan": "6.5",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.111",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.53",
              "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": "6.12.111",
                  "versionStartIncluding": "6.5",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.53",
                  "versionStartIncluding": "6.5",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.2",
                  "versionStartIncluding": "6.5",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amdkfd: fix UAF race in destroy_queue_cpsch\n\nwait_on_destroy_queue() drops locks to wait for queue resume, allowing\na concurrent destroy to free the queue. Use is_being_destroyed flag to\nserialize destruction."
        }
      ],
      "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 UAF is reached from kfd_ioctl_destroy_queue() via AMDKFD_IOC_DESTROY_QUEUE on /dev/kfd, which calls pqm_destroy_queue() then destroy_queue_cpsch() and wait_on_destroy_queue(); the trigger is that local ioctl, not a remote protocol message.\nAC:L - After kfd_ioctl_runtime_enable() and kfd_ioctl_set_debug_trap() (KFD_IOC_DBG_TRAP_ENABLE then KFD_IOC_DBG_TRAP_SUSPEND_QUEUES) set debug_trap_enabled and is_suspended, wait_on_destroy_queue() drops p-\u003emutex; a sibling thread then issues a second AMDKFD_IOC_DESTROY_QUEUE (or KFD_IOC_DBG_TRAP_DISABLE then destroy) and frees the same struct queue while the first sleeps.\nPR:L - kfd_open() has no capable() check, and AMDKFD_IOC_CREATE_QUEUE, AMDKFD_IOC_DESTROY_QUEUE, AMDKFD_IOC_RUNTIME_ENABLE and AMDKFD_IOC_DBG_TRAP are registered with flags 0; kfd_ioctl_set_debug_trap() skips the ptrace check when target==p, so an unprivileged /dev/kfd (render-group) user can trap, suspend and destroy their own queues.\nUI:N - The attacker opens their own /dev/kfd fd, enables debug trap on their own pid via kfd_ioctl_set_debug_trap(), suspends the queue with KFD_IOC_DBG_TRAP_SUSPEND_QUEUES, and issues the concurrent AMDKFD_IOC_DESTROY_QUEUE ioctls; no other user must mount, open, or interact.\nS:U - The use-after-free of struct queue in wait_on_destroy_queue()/destroy_queue_cpsch() and the later uninit_queue() in pqm_destroy_queue() stays in the host kernel that runs amdkfd; it is not a KVM/Xen guest-to-host escape or an IOMMU/DMA isolation bypass.\nC:H - While wait_on_destroy_queue() still evaluates q-\u003eproperties.is_suspended, the racing pqm_destroy_queue() path kfree()s the same struct queue via uninit_queue() and its MQD via mqd_mgr-\u003efree_mqd(); that slab UAF of kernel queue/MQD objects is an arbitrary-read primitive.\nI:H - The overlapping destroy_queue_cpsch() then pqm_destroy_queue() path list_del()s q-\u003elist and kfree()s both the queue and process_queue_node while the waiter still holds those pointers, so the slab can be sprayed into an arbitrary kernel write or control-flow hijack.\nA:H - Using the freed struct queue in wait_on_destroy_queue() or the rest of destroy_queue_cpsch() (list_del(\u0026q-\u003elist), free_mqd, uninit_queue) oopses the kernel; a use-after-free is scored High for availability even when not fully exploited."
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-09-25T12:44:05.565Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/41144829f4645c2bd4cb501d34d253858f750c0a"
        },
        {
          "url": "https://git.kernel.org/stable/c/d98c8032c29944e1e572e1f49a0613d364fece0f"
        },
        {
          "url": "https://git.kernel.org/stable/c/ac081deaf16a639ea7dff2f285fe421a33c1ade0"
        }
      ],
      "title": "drm/amdkfd: fix UAF race in destroy_queue_cpsch",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-97429",
    "datePublished": "2026-09-24T16:03:42.269Z",
    "dateReserved": "2026-09-24T14:53:16.868Z",
    "dateUpdated": "2026-09-25T12:44:05.565Z",
    "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.
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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.

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FKIE_CVE-2026-97429

CVE-2026-97429 (GCVE-0-2026-97429)

Tags

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