CVE-2025-68748 (GCVE-0-2025-68748)

Vulnerability from cvelistv5 – Published: 2025-12-24 12:09 – Updated: 2026-08-05 12:11
VLAI
Title
drm/panthor: Fix UAF race between device unplug and FW event processing
Summary
In the Linux kernel, the following vulnerability has been resolved: drm/panthor: Fix UAF race between device unplug and FW event processing The function panthor_fw_unplug() will free the FW memory sections. The problem is that there could still be pending FW events which are yet not handled at this point. process_fw_events_work() can in this case try to access said freed memory. Simply call disable_work_sync() to both drain and prevent future invocation of process_fw_events_work().
Severity
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: de85488138247d034eb3241840424a54d660926b , < 31db188355a49337e3e8ec98b99377e482eab22c (git)
Affected: de85488138247d034eb3241840424a54d660926b , < 5e3ff56d4cb591daea70786d07dc21d06dc34108 (git)
Affected: de85488138247d034eb3241840424a54d660926b , < 6c1da9ae2c123a9ffda5375e64cc81f9ed3cc04a (git)
Affected: de85488138247d034eb3241840424a54d660926b , < 7051f6ba968fa69918d72cc26de4d6cf7ea05b90 (git)
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Linux Linux Affected: 6.10
Unaffected: 0 , < 6.10 (semver)
Unaffected: 6.12.63 , ≤ 6.12.* (semver)
Unaffected: 6.17.13 , ≤ 6.17.* (semver)
Unaffected: 6.18.2 , ≤ 6.18.* (semver)
Unaffected: 6.19 , ≤ * (original_commit_for_fix)
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{
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          "product": "Linux",
          "programFiles": [
            "drivers/gpu/drm/panthor/panthor_sched.c"
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/panthor: Fix UAF race between device unplug and FW event processing\n\nThe function panthor_fw_unplug() will free the FW memory sections.\nThe problem is that there could still be pending FW events which are yet\nnot handled at this point. process_fw_events_work() can in this case try\nto access said freed memory.\n\nSimply call disable_work_sync() to both drain and prevent future\ninvocation of process_fw_events_work()."
        }
      ],
      "metrics": [
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            "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"
          },
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              "value": "AV:L - Exploitation requires local access to the Panthor DRM render device and cannot be initiated through a network protocol or adjacent interface.\nAC:L - A render-node client can use concurrent submissions to keep firmware events pending while driving fault, hang, reset, and eventual unplug processing. The attacker can repeatedly generate events and influence both sides of the workqueue race.\nPR:L - Panthor exposes GROUP_CREATE and GROUP_SUBMIT through DRM_RENDER_ALLOW without capability checks for ordinary priorities, so an unprivileged user granted normal render-node access can reach the relevant paths.\nUI:N - Concurrent GPU submissions and reset-triggering workloads require no action by another user.\nS:U - The UAF corrupts host-kernel memory but does not inherently cross a separate virtualization, IOMMU, or other security authority.\nC:H - The worker reads through stale firmware-interface pointers after their shared BO and kernel mapping are freed; reclaim exploitation can enable disclosure of arbitrary kernel memory.\nI:H - The stale worker writes request, acknowledgement, and doorbell fields into freed or reallocated memory, permitting kernel-memory corruption and potential control-flow hijacking.\nA:H - Accessing the destroyed firmware mapping can cause a kernel page fault, oops, or panic, and successful corruption can render the entire system unavailable."
            }
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    "datePublished": "2025-12-24T12:09:43.620Z",
    "dateReserved": "2025-12-24T10:30:51.032Z",
    "dateUpdated": "2026-08-05T12:11:17.874Z",
    "state": "PUBLISHED"
  },
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    "redhat_vex": {
      "aggregate_severity": "None",
      "current_release_date": "2026-06-30T10:37:23+00:00",
      "cve": "CVE-2025-68748",
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      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2025/cve-2025-68748.json",
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      "cve": "CVE-2025-68748",
      "id": "CVE-2025-68748",
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      "product_status:first_fixed": "2",
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      "status": "interim",
      "title": "SUSE CVE CVE-2025-68748",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2025-68748.json",
      "version": "24"
    }
  }
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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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.


Detection rules are retrieved from Rulezet.